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The pistachio (, ''Pistacia vera''), a member of the cashew family, is a small tree originating from Central Asia and the Middle East. The tree produces
seeds A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiosperm ...
that are widely consumed as food. ''Pistacia vera'' is often confused with other species in the genus '' Pistacia'' that are also known as pistachio. These other
species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriat ...
can be distinguished by their geographic distributions (in the wild) and their
seed A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiosper ...
s which are much smaller and have a soft shell.


Etymology

Pistachio is from late
Middle English Middle English (abbreviated to ME) is a form of the English language that was spoken after the Norman conquest of 1066, until the late 15th century. The English language underwent distinct variations and developments following the Old Englis ...
''pistace'', from
Old French Old French (, , ; Modern French: ) was the language spoken in most of the northern half of France from approximately the 8th to the 14th centuries. Rather than a unified language, Old French was a linkage of Romance dialects, mutually intel ...
, superseded in the 16th century by forms from Italian ''pistacchio'', via
Latin Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through ...
from Greek ''pistákion'', and from
Middle Persian Middle Persian or Pahlavi, also known by its endonym Pārsīk or Pārsīg () in its later form, is a Western Middle Iranian language which became the literary language of the Sasanian Empire. For some time after the Sasanian collapse, Middle P ...
''pistakē''.


History

The pistachio tree is native to regions of Central Asia, including present-day
Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...
and
Afghanistan Afghanistan, officially the Islamic Emirate of Afghanistan,; prs, امارت اسلامی افغانستان is a landlocked country located at the crossroads of Central Asia and South Asia. Referred to as the Heart of Asia, it is borde ...
.
Archaeology Archaeology or archeology is the scientific study of human activity through the recovery and analysis of material culture. The archaeological record consists of artifacts, architecture, biofacts or ecofacts, sites, and cultural landsc ...
shows that pistachio seeds were a common food as early as 6750 BC. So far, the earliest evidence of pistachio consumption goes back to the Bronze Age Central Asia and comes from Djarkutan, modern Uzbekistan. Pistachio trees were introduced from Asia to Europe in the first century AD by the Romans. They are cultivated across Southern Europe and North Africa.Davidson (1999)''Oxford Companion to food,'' Oxford University Press
Theophrastus Theophrastus (; grc-gre, Θεόφραστος ; c. 371c. 287 BC), a Greek philosopher and the successor to Aristotle in the Peripatetic school. He was a native of Eresos in Lesbos.Gavin Hardy and Laurence Totelin, ''Ancient Botany'', Routle ...
described it as a
terebinth ''Pistacia terebinthus'' also called the terebinth and the turpentine tree, is a deciduous tree species of the genus '' Pistacia'', native to the Mediterranean region from the western regions of Morocco and Portugal to Greece and western an ...
-like tree with
almond The almond (''Prunus amygdalus'', syn. ''Prunus dulcis'') is a species of tree native to Iran and surrounding countries, including the Levant. The almond is also the name of the edible and widely cultivated seed of this tree. Within the genu ...
-like nuts from
Bactria Bactria (; Bactrian: , ), or Bactriana, was an ancient region in Central Asia in Amu Darya's middle stream, stretching north of the Hindu Kush, west of the Pamirs and south of the Gissar range, covering the northern part of Afghanistan, sou ...
. It appears in
Dioscorides Pedanius Dioscorides ( grc-gre, Πεδάνιος Διοσκουρίδης, ; 40–90 AD), “the father of pharmacognosy”, was a Greek physician, pharmacologist, botanist, and author of '' De materia medica'' (, On Medical Material) —a 5-vo ...
' writings as ''pistákia'' (πιστάκια), recognizable as ''P. vera'' by its comparison to pine nuts.
Pliny the Elder Gaius Plinius Secundus (AD 23/2479), called Pliny the Elder (), was a Roman author, naturalist and natural philosopher, and naval and army commander of the early Roman Empire, and a friend of the emperor Vespasian. He wrote the encyclopedic ' ...
writes in his ''Natural History'' that ''pistacia'', "well known among us", was one of the trees unique to Syria, and that the
seed A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiosper ...
was introduced into Italy by the Roman
proconsul A proconsul was an official of ancient Rome who acted on behalf of a consul. A proconsul was typically a former consul. The term is also used in recent history for officials with delegated authority. In the Roman Republic, military command, or ' ...
in Syria, Lucius Vitellius the Elder (in office in 35 AD) and into
Hispania Hispania ( la, Hispānia , ; nearly identically pronounced in Spanish, Portuguese, Catalan, and Italian) was the Roman name for the Iberian Peninsula and its provinces. Under the Roman Republic, Hispania was divided into two provinces: Hi ...
at the same time by Flaccus Pompeius. The early sixth-century manuscript ''De observatione ciborum'' (''On the Observance of Foods'') by Anthimus implies that ''pistacia'' remained well known in Europe in
late antiquity Late antiquity is the time of transition from classical antiquity to the Middle Ages, generally spanning the 3rd–7th century in Europe and adjacent areas bordering the Mediterranean Basin. The popularization of this periodization in English h ...
. An article on pistachio tree cultivation is brought down in Ibn al-'Awwam's 12th-century agricultural work, ''Book on Agriculture''.
Archaeologists Archaeology or archeology is the scientific study of human activity through the recovery and analysis of material culture. The archaeological record consists of artifacts, architecture, biofacts or ecofacts, sites, and cultural landscapes ...
have found evidence from excavations at
Jarmo Jarmo (Qal'at Jarmo) ( ku, Çermo) is a prehistoric archeological site located in modern Iraq on the foothills of the Zagros Mountains. It lies at an altitude of 800 m above sea-level in a belt of oak and pistachio woodlands in the Adha ...
in northeastern Iraq for the consumption of Atlantic pistachio. The
Hanging Gardens of Babylon The Hanging Gardens of Babylon were one of the Seven Wonders of the Ancient World listed by Hellenic culture. They were described as a remarkable feat of engineering with an ascending series of tiered gardens containing a wide variety of tre ...
were said to have contained pistachio trees during the reign of King Merodach-Baladan about 700 BC. In the 19th century, the pistachio was cultivated commercially in parts of the English-speaking world, such as Australia and in the US in
New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe, New Mexico, Santa Fe , LargestCity = Albuquerque, New Mexico, Albuquerque , LargestMetro = Albuquerque metropolitan area, Tiguex , Offi ...
Esteban Herrera (1997) ''Growing pistachios in New Mexico,'' New Mexico State University, Cooperative Extension Service, Circular 53

/ref> and California, where it was introduced in 1854 as a garden tree.Introduction to Fruit Crops (Published Online)
Mark Rieger, Rieger asserts that pistachios began to be commercially harvested in the 1970s. 2006
In 1904 and 1905, David Fairchild of the
United States Department of Agriculture The United States Department of Agriculture (USDA) is the federal executive department responsible for developing and executing federal laws related to farming, forestry, rural economic development, and food. It aims to meet the needs of comme ...
introduced hardier
cultivar A cultivar is a type of cultivated plant that people have selected for desired traits and when propagated retain those traits. Methods used to propagate cultivars include: division, root and stem cuttings, offsets, grafting, tissue culture ...
s to California collected from China, but it was not promoted as a commercial crop until 1929. Walter T. Swingle's pistachios from Syria had already fruited well at Niles, California, by 1917.


Botany


Habitat

Pistachio is a desert plant and is highly tolerant of saline soil. It has been reported to grow well when irrigated with water having 3,000–4,000 ppm of soluble salts. Pistachio trees are fairly hardy in the right conditions and can survive temperatures ranging between in winter and in summer. They need a sunny position and well-drained soil. Pistachio trees do poorly in conditions of high humidity and are susceptible to root rot in winter if they get too much water and the soil is not sufficiently free-draining. Long, hot summers are required for proper ripening of the fruit.


Characteristics

The tree grows up to tall. It has
deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, ...
,
pinnate Pinnation (also called pennation) is the arrangement of feather-like or multi-divided features arising from both sides of a common axis. Pinnation occurs in biological morphology, in crystals, such as some forms of ice or metal crystals, an ...
leaves long. The plants are
dioecious Dioecy (; ; adj. dioecious , ) is a characteristic of a species, meaning that it has distinct individual organisms (unisexual) that produce male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproducti ...
, with separate male and female trees. The flowers are apetalous and unisexual and borne in
panicle A panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a panicle are of ...
s. The fruit is a
drupe In botany, a drupe (or stone fruit) is an indehiscent fruit in which an outer fleshy part ( exocarp, or skin, and mesocarp, or flesh) surrounds a single shell (the ''pit'', ''stone'', or ''pyrena'') of hardened endocarp with a seed (''kernel ...
, containing an elongated
seed A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiosper ...
, which is the edible portion. The seed, commonly thought of as a nut, is a culinary nut, not a botanical nut. The fruit has a hard, cream-colored exterior shell. The seed has a mauve-colored skin and light green flesh, with a distinctive flavor. When the fruit ripens, the shell changes from green to an autumnal yellow/red and abruptly splits partly open. This is known as dehiscence, and happens with an audible pop. The splitting open is a trait that has been selected by humans. Commercial
cultivars A cultivar is a type of cultivated plant that people have selected for desired traits and when propagated retain those traits. Methods used to propagate cultivars include: division, root and stem cuttings, offsets, grafting, tissue culture, ...
vary in how consistently they split open. Each mature pistachio tree averages around of seeds, or around 50,000, every two years.


Cultivation

The pistachio tree may live up to 300 years. The trees are planted in
orchard An orchard is an intentional plantation of trees or shrubs that is maintained for food production. Orchards comprise fruit- or nut-producing trees which are generally grown for commercial production. Orchards are also sometimes a feature of ...
s, and take around 7 to 10 years to reach significant production. Production is alternate-bearing or biennial-bearing, meaning the harvest is heavier in alternate years. Peak production is reached around 20 years. Trees are usually pruned to size to make the harvest easier. One male tree produces enough pollen for 8 to 12 drupe-bearing females. Harvesting in the United States and in Greece is often accomplished using equipment to shake the drupes off the tree. After hulling and drying, pistachios are sorted according to open-mouth and closed-mouth shells, then roasted or processed by special machines to produce pistachio kernels. In California, almost all female pistachio trees are the 'Kerman' cultivar, from Kerman, Iran. A scion from a mature female 'Kerman' is grafted onto a one-year-old rootstock.


Diseases and environment

Pistachio trees are vulnerable to numerous diseases and infestation by insects such as '' Leptoglossus clypealis'' in North America. Among these is infection by the fungus '' Botryosphaeria'', which causes panicle and shoot
blight Blight refers to a specific symptom affecting plants in response to infection by a pathogenic organism. Description Blight is a rapid and complete chlorosis, browning, then death of plant tissues such as leaves, branches, twigs, or floral orga ...
(symptoms include death of the flowers and young shoots), and can damage entire pistachio orchards. In 2004, the rapidly growing pistachio industry in California was threatened by panicle and shoot blight first discovered in 1984. In 2011,
anthracnose A plant canker is a small area of dead tissue, which grows slowly, often over years. Some cankers are of only minor consequence, but others are ultimately lethal and therefore can have major economic implications for agriculture and horticultur ...
fungus caused a sudden 50% loss in the Australian pistachio harvest. Several years of severe drought in Iran around 2008 to 2015 caused significant declines in production.


Production

In 2020, global production of pistachios was about , with the United States and Turkey as leading producers, together accounting for 68% of the total (table). Secondary producers were Iran, China, and Syria. A 2020 report indicated that nearly half of the global production of pistachios in 2019 came from the United States, with production in Iran falling to as low as 7% due to US trade sanctions against Iran,
climate change In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to ...
, and weak economic and water management in Iran. Efforts to grow pistachios for international markets were made during 2019 in Georgia and adjacent
Caucasus The Caucasus () or Caucasia (), is a region between the Black Sea and the Caspian Sea, mainly comprising Armenia, Azerbaijan, Georgia, and parts of Southern Russia. The Caucasus Mountains, including the Greater Caucasus range, have historica ...
countries. More organic production is being promoted in Spain.


Consumption

The kernels are often eaten whole, either fresh or roasted and salted, and are also used in
pistachio ice cream Pistachio ice cream or pistachio nut ice cream is an ice cream flavor made with pistachio nuts or flavoring. It is often distinctively green in color. Pistachio is also a flavor of sorbet and gelato. Pistachio ice cream is a layer in spumoni. ...
, kulfi,
spumoni Spumone (from ''spuma'' or "foam"), plural spumoni, is a molded gelato (a lower-fat Italian form of ice cream) made with layers of different colors and flavors, usually containing candied fruits and nuts. Typically, it is of three flavors, wi ...
, pistachio butter, pistachio paste, and confections such as
baklava Baklava (, or ; ota, باقلوا ) is a layered pastry dessert made of filo pastry, filled with chopped nuts, and sweetened with syrup or honey. It was one of the most popular sweet pastries of Ottoman cuisine. The pre- Ottoman origin of t ...
, pistachio chocolate, pistachio halva, pistachio lokum or
biscotti Biscotti (; ; en, biscuits), known also as cantucci (), are Italian almond biscuits that originated in the Tuscan city of Prato. They are twice-baked, oblong-shaped, dry, crunchy, and may be dipped in a drink, traditionally Vin Santo. Name ...
, and cold cuts such as
mortadella Mortadella () is a large Italian sausage or luncheon meat ('' salume'' ) made of finely hashed or ground heat-cured pork, which incorporates at least 15% small cubes of pork fat (principally the hard fat from the neck of the pig). It is tradi ...
. Americans make pistachio salad, which includes fresh pistachios or pistachio pudding, whipped cream, and canned fruit. The shell of the pistachio is naturally a beige color, but it may be dyed red or green in commercial pistachios. Originally, dye was applied to hide stains on the shells caused when the nuts were picked by hand. In the 21st century, most pistachios are harvested by machine and the shells remain unstained.


Nutrition

Raw pistachios are 4% water, 45% fat, 28%
carbohydrate In organic chemistry, a carbohydrate () is a biomolecule consisting of carbon (C), hydrogen (H) and oxygen (O) atoms, usually with a hydrogen–oxygen atom ratio of 2:1 (as in water) and thus with the empirical formula (where ''m'' may o ...
s, and 20%
protein Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, res ...
(table). In a 100-gram reference amount, pistachios provide of food energy and are a rich source (20% or more of the Daily Value or DV) of protein,
dietary fiber Dietary fiber (in British English fibre) or roughage is the portion of plant-derived food that cannot be completely broken down by human digestive enzymes. Dietary fibers are diverse in chemical composition, and can be grouped generally by t ...
, several dietary minerals, and the B vitamins thiamin (76% DV) and vitamin B6 (131% DV) (table). Pistachios are a moderate source (10–19% DV) of
calcium Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar ...
, riboflavin, vitamin B5, folate,
vitamin E Vitamin E is a group of eight fat soluble compounds that include four tocopherols and four tocotrienols. Vitamin E deficiency, which is rare and usually due to an underlying problem with digesting dietary fat rather than from a diet low in vi ...
, and
vitamin K Vitamin K refers to structurally similar, fat-soluble vitamers found in foods and marketed as dietary supplements. The human body requires vitamin K for post-synthesis modification of certain proteins that are required for blood coagulation ...
(table). The fat profile of raw pistachios consists of saturated fats, monounsaturated fats and polyunsaturated fats. Saturated fatty acids include
palmitic acid Palmitic acid (hexadecanoic acid in IUPAC nomenclature) is a fatty acid with a 16-carbon chain. It is the most common saturated fatty acid found in animals, plants and microorganisms.Gunstone, F. D., John L. Harwood, and Albert J. Dijkstra. The ...
(10% of total) and
stearic acid Stearic acid ( , ) is a saturated fatty acid with an 18-carbon chain. The IUPAC name is octadecanoic acid. It is a waxy solid and its chemical formula is C17H35CO2H. Its name comes from the Greek word στέαρ "''stéar''", which means ta ...
(2%).
Oleic acid Oleic acid is a fatty acid that occurs naturally in various animal and vegetable fats and oils. It is an odorless, colorless oil, although commercial samples may be yellowish. In chemical terms, oleic acid is classified as a monounsaturated o ...
is the most common monounsaturated fatty acid (51% of total fat) and
linoleic acid Linoleic acid (LA) is an organic compound with the formula COOH(CH2)7CH=CHCH2CH=CH(CH2)4CH3. Both alkene groups are ''cis''. It is a fatty acid sometimes denoted 18:2 (n-6) or 18:2 ''cis''-9,12. A linoleate is a salt or ester of this acid. ...
, a polyunsaturated fatty acid, is 31% of total fat. Relative to other tree nuts, pistachios have a lower amount of fat and food energy but higher amounts of
potassium Potassium is the chemical element with the symbol K (from Neo-Latin '' kalium'') and atomic number19. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. Potassium metal reacts rapidly with atmos ...
, vitamin K,
γ-tocopherol γ-Tocopherol is a tocopherol and one of the chemical compounds that comprise vitamin E. As a food additive, it has E number E308. See also * α-Tocopherol * β-Tocopherol * δ-Tocopherol δ-Tocopherol is a tocopherol and one of the che ...
, and certain
phytochemical Phytochemicals are chemical compounds produced by plants, generally to help them resist fungi, bacteria and plant virus infections, and also consumption by insects and other animals. The name comes . Some phytochemicals have been used as poison ...
s such as
carotenoid Carotenoids (), also called tetraterpenoids, are yellow, orange, and red organic pigments that are produced by plants and algae, as well as several bacteria, and fungi. Carotenoids give the characteristic color to pumpkins, carrots, parsnips, ...
s, and
phytosterol Phytosterols are phytosteroids, similar to cholesterol, that serve as structural components of biological membranes of plants. They encompass plant sterols and stanols. More than 250 sterols and related compounds have been identified. Free phyt ...
s.


Research and health effects

In July 2003, the United States
Food and Drug Administration The United States Food and Drug Administration (FDA or US FDA) is a federal agency of the Department of Health and Human Services. The FDA is responsible for protecting and promoting public health through the control and supervision of food ...
approved the first qualified
health claim A health claim on a food label and in food marketing is a claim by a manufacturer of food products that their food will reduce the risk of developing a disease or condition. For example, it is claimed by the manufacturers of oat cereals that oa ...
specific to consumption of seeds (including pistachios) to lower the risk of
heart disease Cardiovascular disease (CVD) is a class of diseases that involve the heart or blood vessels. CVD includes coronary artery diseases (CAD) such as angina and myocardial infarction (commonly known as a heart attack). Other CVDs include stroke, h ...
: "Scientific evidence suggests but does not prove that eating per day of most nuts, such as pistachios, as part of a diet low in saturated fat and cholesterol may reduce the risk of heart disease". Although a typical serving of pistachios supplies substantial food energy (nutrition table), their consumption in normal amounts is not associated with weight gain or
obesity Obesity is a medical condition, sometimes considered a disease, in which excess body fat has accumulated to such an extent that it may negatively affect health. People are classified as obese when their body mass index (BMI)—a person's ...
. One review of preliminary research found that pistachio consumption lowered
blood pressure Blood pressure (BP) is the pressure of circulating blood against the walls of blood vessels. Most of this pressure results from the heart pumping blood through the circulatory system. When used without qualification, the term "blood pressure ...
in persons without
diabetes mellitus Diabetes, also known as diabetes mellitus, is a group of metabolic disorders characterized by a high blood sugar level ( hyperglycemia) over a prolonged period of time. Symptoms often include frequent urination, increased thirst and increased ...
. In a Systematic review published in 2021, authors found that pistachio consumption for three months or less significantly reduced triglyceride levels.


Toxin and safety concerns

As with other tree seeds, aflatoxin is found in poorly harvested or processed pistachios. Aflatoxins are potent
carcinogen A carcinogen is any substance, radionuclide, or radiation that promotes carcinogenesis (the formation of cancer). This may be due to the ability to damage the genome or to the disruption of cellular metabolic processes. Several radioactive sub ...
ic chemicals produced by molds such as ''
Aspergillus flavus ''Aspergillus flavus'' is a saprotrophic and pathogenic fungus with a cosmopolitan distribution. It is best known for its colonization of cereal grains, legumes, and tree nuts. Postharvest rot typically develops during harvest, storage, and/or ...
'' and '' A. parasiticus''. The mold contamination may occur from soil, poor storage, and spread by pests. High levels of mold growth typically appear as gray to black filament-like growth. Eating mold-infected and aflatoxin-contaminated pistachios is unsafe. Aflatoxin contamination is a frequent risk, particularly in warmer and humid environments. Food contaminated with aflatoxins has been found as the cause of frequent outbreaks of acute illnesses in parts of the world. In some cases, such as Kenya, this has led to several deaths. Pistachio shells typically split naturally prior to harvest, with a hull covering the intact seeds. The hull protects the kernel from invasion by molds and insects, but this hull protection can be damaged in the orchard by poor orchard management practices, by birds, or after harvest, which makes exposure to contamination much easier. Some pistachios undergo so-called "early split", wherein both the hull and the shell split. Damage or early splits can lead to aflatoxin contamination. In some cases, a harvest may be treated to keep contamination below strict food safety thresholds; in other cases, an entire batch of pistachios must be destroyed because of aflatoxin contamination. Like other members of the family Anacardiaceae (which includes poison ivy, sumac, mango, and
cashew The cashew tree (''Anacardium occidentale'') is a tropical evergreen tree native to South America in the genus ''Anacardium'' that produces the cashew seed and the cashew apple accessory fruit. The tree can grow as tall as , but the dwarf cul ...
), pistachios contain
urushiol Urushiol is an oily mixture of organic compounds with allergenic properties found in plants of the family Anacardiaceae, especially '' Toxicodendron'' ''spp.'' (e.g., poison oak, Chinese lacquer tree, poison ivy, poison sumac), ''Comoclad ...
, an irritant that can cause allergic reactions.


See also

*
List of culinary nuts A culinary nut is a dry, edible fruit or seed that usually, but not always, has a high fat content. Nuts are used in a wide variety of edible roles, including in baking, as snacks (either roasted or raw), and as flavoring. In addition to b ...
* ''
Pistacia lentiscus ''Pistacia lentiscus'' (also lentisk or mastic) is a dioecious evergreen shrub or small tree of the genus '' Pistacia'' native to the Mediterranean Basin. It grows up to tall and is cultivated for its aromatic resin, mainly on the Greek is ...
''


References


External links

* {{Authority control Pistacia Edible nuts and seeds Flora of Central Asia Flora of Western Asia Fruit trees Trees of Mediterranean climate Italian cuisine Plants described in 1753 Drupes Symbols of California