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Boechera
''Boechera'' (rockcress) is a genus of the family Brassicaceae. It was named after the Danish botanist Tyge W. Böcher (1909–1983), who was known for his research in alpine plants, including the mustards ''Draba'' and ''Boechera holboellii''. According to recent molecular-based studies, ''Boechera'' is closely related to the genus ''Arabidopsis'' which also includes the widely known model plant ''Arabidopsis thaliana''. Until recently, members of this genus were included in the genus ''Arabis'', but have been separated from that genus based on recent genetic and cytological data. Unlike the genus ''Arabis'' (x=8) ''Boechera'' has a base chromosome number of x=7. Many taxa are triploid. ''Boechera'' is a primarily North American genus, most diverse in the western United States, and its distribution range also includes Greenland and the Russian Far East. The genus is poorly known, and species within are difficult to separate morphologically though some clearly distinct species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boechera Stricta
''Boechera stricta'' (Synonym (taxonomy), syn. ''Arabis drummondii'', ''Boechera drummondii'', ''Turritis stricta'') is a species of flowering plant in the Brassicaceae, mustard family known by the common name Drummond's rockcress. It is native to much of North America, including most of Canada, and the western and northeastern United States. Habitat and description It is a Biennial plant, biennial or Perennial plant, perennial Herbaceous plant, herb growing one or more erect stems from a small caudex. The stems may branch near the top and reach heights anywhere between 30 and 90 centimeters. They are generally not hairy. There is a basal clump of widely lance-shaped leaves about the caudex, each up to 8 centimeters long. There are also widely spaced leaves along the stem. The top of the stem is occupied by a narrow inflorescence of flowers which are usually white, but sometimes light pink. The fruit is a straight, erect silique up to 10 centimeters long containing two rows of wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boechera Crandallii
''Boechera crandallii'', or Crandall's rockcress, is found in Wyoming and Colorado where it is found on limestone chip-rock and stony areas, often among sagebrush. Flowering time is from May to June. According to chromosome counts by Rollins (1941 and 1966) ''B. crandalli'' has been identified as a diploid Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Here ''sets of chromosomes'' refers to the number of maternal and paternal chromosome copies, ... with n=7 which presumably reproduces sexually. References crandallii Flora of Colorado Flora of Wyoming {{Brassicales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boechera Falcatoria
''Boechera falcatoria'' (formerly ''Arabis falcatoria'') is a rare species of flowering plant in the family Brassicaceae known by the common name Grouse Creek rockcress. It is endemic to Utah in the United States, where it is known only from Box Elder County. It has been reported from neighboring Nevada, but these reports are likely based on misidentifications.''Arabis falcatoria''. The Nature Conservancy. Description This produces several stems up to 20 to 30 centimeters tall from a |
Boechera Constancei
''Boechera constancei'' is a species of flowering plant in the mustard family known by the common name Constance's rockcress. It is endemic to California, where it is known only from the northern Sierra Nevada of Plumas and Sierra Counties. It is a member of the serpentine soils flora. This is a perennial herb growing from a branching, woody caudex. It produces one or more erect, hairless stems to maximum heights between 15 and 30 centimeters. The caudex is surrounded by a dense basal rosette of stiff, blue-green, lance-shaped leaves up to 3 centimeters long. There may be a few smaller leaves along the stem. The inflorescence produces 5 to 10 white mustardlike flowers with protruding stamens. The fruit is a hanging green silique A silique or siliqua (plural ''siliques'' or ''siliquae'') is a type of fruit (seed capsule) having two fused carpels with the length being more than three times the width. When the length is less than three times the width of the dried fruit ... 4 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boechera Dispar
''Boechera dispar'' is a species of flowering plant in the family Brassicaceae known by the common name pinyon rockcress. It is native to eastern California and western Nevada, where it grows in rocky areas in desert and mountain habitat. This is a perennial herb growing from a branching caudex. It produces several erect stems reaching 10 to 25 centimeters tall. The leaves are mostly located about the caudex. They are linear to lance-shaped, coated in white hairs, and one or two centimeters long. The flowers have purple petals. The fruit is a long, narrow, hairless silique A silique or siliqua (plural ''siliques'' or ''siliquae'') is a type of fruit (seed capsule) having two fused carpels with the length being more than three times the width. When the length is less than three times the width of the dried fruit ... up to 7 centimeters long containing round, winged seeds. External linksJepson Manual Treatment [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boechera Cobrensis
''Boechera cobrensis'' ( syn. ''Arabis cobrensis'') is a species of flowering plant in the mustard family known by the common names Masonic rockcress and sagebrush rockcress. It is native to the western United States from eastern California to Wyoming, where it is found in sandy habitat, especially sagebrush. This is a perennial herb growing several erect, slender stems to heights near half a meter from a branching caudex. The plant forms a narrow clump with a base of narrow, linear, densely hairy leaves up to 5 centimeters long. There are also a few slightly shorter leaves clasping the stems at intervals. The top of each stem is occupied by an inflorescence of small, nodding flowers with dull yellowish sepals and white petals. The flowers give way to fruits which are narrow, straight silique A silique or siliqua (plural ''siliques'' or ''siliquae'') is a type of fruit (seed capsule) having two fused carpels with the length being more than three times the width. When the len ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boechera Laevigata
''Borodinia laevigata'' is a species of flowering plant in the mustard family known by the common name smooth rockcress. It is native to many areas of the eastern United States and Canada, where it grows in calcareous rocky woods and bluffs. It is moderately common throughout its range, although it is absent from the southeastern coastal plain and the far north. This species is a biennial herb growing from a single stem. It flowers in early spring and has persistent fruit. It is differentiated from other species by its auriculate-clasping leaves, short white petals, and glaucous ''Glaucous'' (, ) is used to describe the pale grey or bluish-green appearance of the surfaces of some plants, as well as in the names of birds, such as the glaucous gull (''Larus hyperboreus''), glaucous-winged gull (''Larus glaucescens''), ... stem. This species was moved to the genus ''Borodinia'' in 2013 following a genetic analysis. References Brassicaceae Flora of Northern America< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arabis
''Arabis'' ,''Sunset Western Garden Book,'' 1995:606–607 or rockcress, is a genus of flowering plants, within the family Brassicaceae. Description The species are herbaceous, annual or perennial plants, growing to 10–80 cm tall, usually densely hairy, with simple entire to lobed leaves 1–6 cm long, and small white four-petaled flowers. The fruit is a long, slender capsule containing 10-20 or more seeds. Natural habitat for ''Arabis'' species is rocky mountain/cliff sides or dry sites. Cultivation of ''Arabis'' is best suited for rock gardens or container gardens. This genus is pollinated by members of Apieae and Lepidoptera. Taxonomy Though traditionally recognized as a large genus with many Old World and New World members, more recent evaluations of the relationships among these species using genetic data suggest there are two major groups within the old genus ''Arabis''. These two groups are not each other's closest relatives, so have been split into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brassicaceae
Brassicaceae () or (the older but equally valid) Cruciferae () is a medium-sized and economically important Family (biology), family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, while some are shrubs. The leaves are simple (although are sometimes deeply incised), lack stipules, and appear alternately on stems or in Rosette (botany), rosettes. The inflorescences are terminal and lack bracts. The flowers have four free sepals, four free alternating petals, two shorter free stamens and four longer free stamens. The fruit has seeds in rows, divided by a thin wall (or septum). The family contains 372 genera and 4,060 accepted species. The largest genera are ''Draba'' (440 species), ''Erysimum'' (261 species), ''Lepidium'' (234 species), ''Cardamine'' (233 species), and ''Alyssum'' (207 species). , it was divided into two subfamilies, Brassicoideae and Aethionemoideae. The family contains the cruciferous vegetable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pieris Oleracea
''Pieris oleracea'', or more commonly known as the mustard white, is a butterfly in the family Pieridae native to a large part of Canada and the northeastern United States. The nearly all-white butterfly is often found in wooded areas or open plains. There are two seasonal forms, which make it distinct from other similar species. Because of climate change, populations are moving further north. As indicated by the common name, ''P. oleracea'' adults and larvae primarily feed on plants in the mustard family, ''Brassicaceae''. The species is threatened by the rapid, and monoculture-forming, spread of the invasive species ''Alliaria petiolata'', which is toxic to larvae. Populations of ''P. oleracea'' have been declining. It may be that this butterfly is slowly adapting to garlic mustard. However, it may not be a fast enough process to ensure its survival, due to the high level of aggression on the part of the plant and the continuing encroachment of human development. Its specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
