''Prunus fasciculata'', also known as wild almond, desert almond, or desert peach is a spiny and woody shrub producing wild almonds, which is native to western deserts of North America.

Description

''Prunus fasciculata'' grows up to high, exceptionally to , with many horizontal (

divaricate Divaricate means branching, or having separation or a degree of separation. The angle between branches is wide. In botany In botany, the term is often used to describe the branching pattern of plant Plants are predominantly Photosynthesi ...

) branches, generally with thorns (

spinescent In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called ''spinose teeth'' or ''spinose apical processes''), are hard, rigid extensions or modifications of leaves, roots, stems or buds with sharp, s ...

), often in thickets. The

bark Bark may refer to: * Bark (botany), an outer layer of a woody plant such as a tree or stick * Bark (sound), a vocalization of some animals (which is commonly the dog) Places * Bark, Germany * Bark, Warmian-Masurian Voivodeship, Poland Arts, en ...

is gray and without hairs (

glabrous Glabrousness (from the Latin '' glaber'' meaning "bald", "hairless", "shaved", "smooth") is the technical term for a lack of hair, down, setae, trichomes or other such covering. A glabrous surface may be a natural characteristic of all or part o ...

The leaves are long, narrow (

linear Linearity is the property of a mathematical relationship ('' function'') that can be graphically represented as a straight line. Linearity is closely related to '' proportionality''. Examples in physics include rectilinear motion, the linear ...

), with a broad, flatten tip that tapers to a narrow base, (

spatulate The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular ...

oblanceolate The following is a list of terms which are used to describe leaf plant morphology, morphology in the description and taxonomy (biology), taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflet (bo ...

), arranged on very short leaf stem ( petiole) like bundles of needles (

fascicle Fascicle or ''fasciculus'' may refer to: Anatomy and histology * Muscle fascicle, a bundle of skeletal muscle fibers * Nerve fascicle, a bundle of axons (nerve fibers) ** Superior longitudinal fasciculus *** Arcuate fasciculus ** Gracile fasci ...

s). Sepals are hairless and without lobes or teeth. The flowers are small and white with 3-mm

petals Petals are modified leaves that surround the reproductive parts of flowers. They are often brightly colored or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''corolla''. Petals are usuall ...

, occurring either solitary or in fascicles and are without a petal stem (

subsessile In botany, sessility (meaning "sitting", used in the sense of "resting on the surface") is a characteristic of plant parts (such as flowers and leaves) that have no stalk. Plant parts can also be described as subsessile, that is, not completely ...

) growing from the leaf

axil A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, ...

s. They 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 ...

. Male flowers have 10–15 stamens; female, one or more

pistil Gynoecium (; ) is most commonly used as a collective term for the parts of a flower that produce ovules and ultimately develop into the fruit and seeds. The gynoecium is the innermost whorl of a flower; it consists of (one or more) '' pis ...

s. The plant displays numerous fragrant flowers from March to May, which attract the bees that pollinate it. The

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 (''kerne ...

is about long, ovoid, light brown and

pubescent The adjective pubescent may describe: * people or animals undergoing puberty * plants that are hairy, covered in trichomes * insects that are covered in setae In biology, setae (singular seta ; from the Latin word for "bristle") are any of a ...

with thin flesh. The species lives many years (is

perennial A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wide ...

), and drops its leaves (

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, a ...

Taxonomy

The plant was first classified as ''Emplectocladus fasciculata'' in an 1853 paper by

John Torrey John Torrey (August 15, 1796 – March 10, 1873) was an American botanist, chemist, and physician. Throughout much of his career, he was a teacher of chemistry, often at multiple universities, while he also pursued botanical work, focusing on ...

based on a collection of the plants of California acquired during the third expedition of

John C. Fremont John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Testament Works * Gospel of John, a title often shortened to John * First Epistle of John, often shortened to 1 John * Second E ...

in 1845; whence the synonym ''Emplectocladus fasciculata'' (Torr.) The work was illustrated by

Isaac Sprague Isaac Sprague (September 5, 1811 – 1895) was a self-taught landscape, botanical, and ornithological painter. He was America's best known botanical illustrator of his day. Sprague was born in Hingham, Massachusetts and apprenticed with his unc ...

. Torrey devised the genus ''Empectocladus'' to comprise a few desert shrubs. According to Silas C. Mason the genus has :... a top so densely branched, angled and interlocked as to well merit the name Emplectocladus (Greek, "woven branch"), signifying interlocked branches ... According to

George Bentham George Bentham (22 September 1800 – 10 September 1884) was an English botanist, described by the weed botanist Duane Isely as "the premier systematic botanist of the nineteenth century". Born into a distinguished family, he initially studi ...

and

Joseph Dalton Hooker Sir Joseph Dalton Hooker (30 June 1817 – 10 December 1911) was a British botanist and explorer in the 19th century. He was a founder of geographical botany and Charles Darwin's closest friend. For twenty years he served as director of ...

the name ''fasciculata'' means that the leaves are in fascicles, or little bundles: :Leaves small,

, as it were of precious stones,

subglobose This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary o ...

fasciculate However,

Asa Gray Asa Gray (November 18, 1810 – January 30, 1888) is considered the most important American botanist of the 19th century. His '' Darwiniana'' was considered an important explanation of how religion and science were not necessarily mutually ex ...

publishing in 1874 reclassified ''Empectocladus'' to ''Prunus'' resulting in the designation ''Prunus fasciculata'' (Torr.) A. Gray (subg. ''Emplectocladus),'' in which the desert shrubs become a subgenus. In 1996 Jepson defined a California variety with smooth leaves, ''punctata'', in comparison to which Gray's species, with pubescent leaves, becomes the variety, ''fasciculata''. Unfortunately, the binomial ''Prunus punctata'' was already used in 1878 to describe what is now known to be ''

Prunus phaeosticta ''Prunus phaeosticta'', the dark-spotted cherry, is a species of ''Prunus'' native to China, including Taiwan, and southeast Asia, including far eastern India, Bangladesh, Burma, Thailand, Laos and Vietnam. It goes by a number of different names ...

''. ''Prunus fasciculata punctata'' grows in the coastal ranges as well as in the desert.

Palaeobotanical evidence

Middens from rodent activities such as those of the

pack rat A pack rat or packrat, also called a woodrat or trade rat, are any species in the North and Central American rodent genus ''Neotoma''. Pack rats have a rat-like appearance, with long tails, large ears, and large, black eyes. Pack rats are notice ...

are a rich source of plant macrofossils from late

Pleistocene The Pleistocene ( , often referred to as the '' Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed ...

habitats. At Point of Rocks in

Nevada Nevada ( ; ) is a state in the Western region of the United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the 7th-most extensive, ...

by 11,700 BP, desert shrubs such as desert almond had replaced

Juniper Junipers are coniferous trees and shrubs in the genus ''Juniperus'' () of the cypress family Cupressaceae. Depending on the taxonomy, between 50 and 67 species of junipers are widely distributed throughout the Northern Hemisphere, from the Arcti ...

and

Joshua tree ''Yucca brevifolia'' is a plant species belonging to the genus ''Yucca''. It is tree-like in habit, which is reflected in its common names: Joshua tree, yucca palm, tree yucca, and palm tree yucca. This monocotyledonous tree is native to the ar ...

s, indicating the onset of the modern desert. Somewhat earlier, 17,000–14,000 BP, desert almond flourished in a mixed desert and woodland ecology on the

Colorado Plateau The Colorado Plateau, also known as the Colorado Plateau Province, is a physiographic and desert region of the Intermontane Plateaus, roughly centered on the Four Corners region of the southwestern United States. This province covers an area ...

Distribution and habitat

The species is native to the deserts of

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a U.S. state, state in the Southwestern United States. It is the list of U.S. states and territories by area, 6th largest and the list of U.S. states and territories by population, 14 ...

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the ...

Baja California Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...

, Nevada, and

Utah Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to its ...

. It prefers sandy or rocky soil on dry slopes and washes, usually below elevation.

Uses

The plant is not cultivated. Some Native Americans in its limited range learned traditional ways of using it: the

Cahuilla The Cahuilla , also known as ʔívil̃uqaletem or Ivilyuqaletem, are a Native American people of the various tribes of the Cahuilla Nation, living in the inland areas of southern California.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 (''kerne ...

as a delicacy. The wild almonds were considered a delicacy by Native Americans. The

Kawaiisu The Kawaiisu (pronounced: ″ka-wai-ah-soo″) are a Native Californian ethnic group in the United States who live in the Tehachapi Valley and to the north across the Tehachapi Pass in the southern Sierra Nevada, toward Lake Isabella and Walker ...

found the tough twigs useful as drills in starting fires and as the front portion of arrow shafts. The seed contains too much

cyanide Cyanide is a naturally occurring, rapidly acting, toxic chemical that can exist in many different forms. In chemistry, a cyanide () is a chemical compound that contains a functional group. This group, known as the cyano group, consists of ...

to be edible, although there is some archaeological evidence that the seeds were pounded into flour and leached to make it edible by the ancient population of the

Mojave desert The Mojave Desert ( ; mov, Hayikwiir Mat'aar; es, Desierto de Mojave) is a desert in the rain shadow of the Sierra Nevada mountains in the Southwestern United States. It is named for the indigenous Mojave people. It is located primarily i ...

References

External links

*
''Prunus fasciculata'' - U.C. CalPhoto Gallery
* {{Taxonbar, from=Q3009137 fasciculata Desert fruits Flora of Baja California Flora of California Flora of the Southwestern United States Natural history of the Colorado Desert Natural history of the Mojave Desert Natural history of the California chaparral and woodlands Natural history of the Peninsular Ranges Natural history of the Santa Monica Mountains Natural history of the Transverse Ranges Plants described in 1851 Taxa named by Asa Gray Taxa named by John Torrey Drought-tolerant plants Plants used in Native American cuisine Dioecious plants Flora without expected TNC conservation status