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Transberingia bursifolia subsp. virgata

Higher Taxonomy
Family: Brassicaceae (Cruciferae)View DescriptionDichotomous Key

Habit: Annual to shrub; sap pungent, watery. Leaf: generally simple, alternate; generally both basal, cauline; stipules 0. Inflorescence: generally raceme, generally not bracted. Flower: bisexual, generally radial; sepals 4, generally free; petals (0)4, forming a cross, generally white or yellow to purple; stamens generally 6 (2 or 4), 4 long, 2 short (3 pairs of unequal length); ovary 1, superior, generally 2-chambered with septum connecting 2 parietal placentas; style 1, stigma entire or 2-lobed. Fruit: capsule, generally 2-valved, "silique" (length >= 3 × width) or "silicle" (length < 3 × width), dehiscent by 2 valves or indehiscent, cylindric or flat parallel or perpendicular to septum, segmented or not. Seed: 1--many, in 1 or 2 rows per chamber, winged or wingless; embryo strongly curved.
Genera In Family: +- 330 genera, 3780 species: worldwide, especially temperate. Note: Highest diversity in Mediterranean area, mountains of southwestern Asia, adjacent central Asia, western North America; some Brassica species are oil or vegetable crops; Arabidopsis thaliana used in experimental molecular biology; many species are ornamentals, weeds. Aurinia saxatilis (L.) Desvaux in cultivation only. Aubrieta occasional waif in central NCoR, Carrichtera annua (L.) DC. in SCo, Iberis sempervirens L., Iberis umbellata L. in PR, Teesdalia coronopifolia (Bergeret) Thell., Teesdalia nudicaulis (L.) W.T. Aiton in southern NCoRO, CCo. Cardaria, Coronopus moved to Lepidium; Caulostramina to Hesperidanthus; Guillenia to Caulanthus; Heterodraba to Athysanus; California taxa of Lesquerella to Physaria; Malcolmia africana to Strigosella.
eFlora Treatment Author: Ihsan A. Al-Shehbaz, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: TransberingiaView Description 

Species In Genus: 1 sp.: North America, Russian Far East. Etymology: (Latin: across the Bering Strait)
eFlora Treatment Author: Ihsan A. Al-Shehbaz

Transberingia bursifolia (DC.) Al-Shehbaz & O'Kane subsp. virgata (Nutt.) Al-Shehbaz & O'Kane
Habit: Perennial herb, with caudex; stiff-hairy proximally, hairs simple to forked or many-branched. Stem: branched, (0.5)1--4.5(6.5) dm, distal stem hairs appressed, occasionally simple; glabrous in age. Leaf: basal simple, petioled, rosetted, (0.5)1.2--6.5(10) cm, (2)3--8(17) mm wide, oblanceolate to obovate or lance-linear, entire or dentate; cauline sessile, (0.5)1--3(4.2) cm, (1)2.5--7(10) mm wide, lanceolate to lance-linear or oblong, entire, base strongly sagittate. Inflorescence: elongated. Flower: sepals erect, 1.2--2.5, base not sac-like; petals 2.5--4.5 mm, (0.8)1--1.5 mm wide, not clawed, white. Fruit: silique, dehiscent, (1.5)2--3.3(4) cm, (0.7)1--1.5(2) mm wide, linear, cylindric, unsegmented; style slender, 0.2--0.8(1) mm, entire; pedicels ascending, (3)5--14(18) mm. Seed: 70--150, in 2 rows, 0.8--1 mm, oblong, wingless. Chromosomes: 2n=16.
Ecology: Meadows, near aspen groves, pinyon/juniper woodland; Elevation: 2000--3700 m. Bioregional Distribution: SNE; Distribution Outside California: to western Canada, Colorado. Flowering Time: May--Jul Note: Other subsp. in Greenland, Alaska, northern Canada, Russia.
Synonyms: Halimolobos virgata (Nutt.) O.E. Schulz.
eFlora Treatment Author: Ihsan A. Al-Shehbaz
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botanical illustration including Transberingia bursifolia subsp. virgata


Citation for this treatment: Ihsan A. Al-Shehbaz 2017. Transberingia bursifolia subsp. virgata, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on July 27, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on July 27, 2017.

Transberingia bursifolia subsp. virgata
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© 2015 Steve Matson
Transberingia bursifolia subsp. virgata
click for enlargement
© 2015 Steve Matson
Transberingia bursifolia subsp. virgata
click for enlargement
© 2015 Dylan Neubauer
Transberingia bursifolia subsp. virgata
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© 2015 Michael Charters
Transberingia bursifolia subsp. virgata
click for enlargement
© 2015 Steve Matson
Transberingia bursifolia subsp. virgata
click for enlargement
© 2016 Dylan Neubauer

More photos of Transberingia bursifolia subsp. virgata in CalPhotos

Geographic subdivisions for Transberingia bursifolia subsp. virgata:
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.