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FNA | Family List | FNA Vol. 7 | Brassicaceae

39. Barbarea W. T. Aiton in W. Aiton and W. T. Aiton, Hortus Kew. 4: 109. 1812.
[name conserved]

Wintercress, scurvygrass, rocket, uplandcress, corn-mustard [For Saint Barbara, fourth-century, or perhaps alluding to being the only plants available for food on Saint Barbara’s Day (4 December)]

Ihsan A. Al-Shehbaz

Campe Dulac

Biennials or perennials [annuals]; (rhizomatous or with woody caudex); not scapose; glabrous or sparsely pubescent. Stems erect [prostrate], branched distally, (angular [not angular]). Leaves basal and cauline; petiolate and sessile; basal rosulate or not, (and proximal cauline) petiolate, blade margins usually entire, crenate or lobed, rarely dentate or repand; cauline sessile, blade (base auriculate or amplexicaul) margins entire, dentate, or lobed. Racemes (corymbose, several-flowered), considerably [slightly] elongated in fruit, (rachis striate). Fruiting pedicels (sometimes absent), erect to divaricate, slender or stout. Flowers: sepals (sometimes persistent), erect [spreading], oblong [ovate, linear], lateral pair saccate or not basally, (apex often cucullate); petals yellow or pale yellow [creamy white], spatulate or oblanceolate, (longer than sepals), claw obscurely differentiated from blade, (apex obtuse or rounded); stamens tetradynamous; filaments (yellow), not dilated basally; anthers oblong, (apex obtuse); nectar glands (4): lateral annular, median toothlike. Fruits siliques, sessile or shortly stipitate, usually linear, rarely elliptic-linear, smooth or torulose, terete, 4-angled, or latiseptate; valves each with prominent midvein and distinct marginal veins, usually glabrous, rarely pubescent; replum rounded; septum complete; ovules 16-52 per ovary; style obsolete or distinct; stigma capitate, (sometimes slightly 2-lobed). Seeds uniseriate [sub-biseriate], plump or slightly flattened, not winged [winged or margined], oblong, ovoid, or orbicular; seed coat (reticulate or, rarely, tuberculate), not mucilaginous when wetted; cotyledons accumbent. x = 8.

Species 22 (4 in the flora): North America, Europe, Asia, n Africa, Australia

SELECTED REFERENCE Fernald, M. L. 1909. The North American species of Barbarea. Rhodora. 11: 134-141.

1 Fruits (4.5-)5.3-7(-8) cm; ovules (34-)38-48(-52) per ovary; fruiting pedicels as broad as fruit; cauline leaf blades pinnatifid to pinnatisect.   4 Barbarea verna
+ Fruits (0.7-)1.5-4(-4.5) cm; ovules 16-36 per ovary; fruiting pedicels narrower than fruit; cauline leaf blades undivided or lyrate-pinnatifid   (2)
2 (1) Styles (1-)1.5-3(-3.5) mm, slender; auricles of cauline leaves glabrous; fruits usually not appressed to rachises.   1 Barbarea vulgaris
+ Styles 0.2-1.5(-2) mm, sometimes stout; auricles of cauline leaves usually sparsely pubescent, rarely glabrous, sometimes margins ciliate; fruits (erect to erect-ascending) sometimes appressed to rachises   (3)
3 (2) Fruits (1.2-)1.8-2.8(-3) cm; ovules (16-)20-28 per ovary; petals 2.5-4.5 × 0.5-1 (-1.2) mm; cauline leaf blade margins dentate.   2 Barbarea stricta
+ Fruits (2.5-)3.1-4(-4.5) cm; ovules (24-)26-36 per ovary; petals 5-7(-8) × (1.5-)2-3 mm; cauline leaf blade margins incised or pinnatifid.   3 Barbarea orthoceras

Lower Taxa


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