Draba helleriana Greene
Family: Brassicaceae
Heller's draba,  more...
[Draba aurea var. stylosa A.Gray,  more]
Draba helleriana image
Anthony Mendoza  
Biennials or perennials; (short-lived); caudex simple or branched; not scapose. Stems branched, (0.1-)1.5-4.3(-5.1) dm, hirsute throughout, trichomes simple, 0.4-1.3(-1.8) mm, with short-stalked to subsessile, 3-5-rayed ones, 0.2-0.4 mm, (some slightly coarser, 2-rayed). Basal leaves rosulate; petiolate; petiole base ciliate or not; blade oblanceolate to obovate, 0.9-4.1 (-5.2) cm × 2-7(-10) mm, margins entire or dentate, surfaces pubescent, abaxially with stalked, cruciform, and fewer 3-5-rayed trichomes, 0.1-0.6 mm, adaxially with cruciform and simple trichomes, 0.4-1.3 mm, and smaller 2-rayed ones. Cauline leaves (8-)12-31(-43); sessile; blade ovate to lanceolate or oblong, margins usually dentate, rarely subentire, surfaces pubescent as basal. Racemes 10-52(-83)-flowered, usually ebracteate, rarely proximalmost 1 or 2 flowers bracteate, elongated in fruit; rachis not flexuous, pubescent as stem. Fruiting pedicels horizontal to divaricate-ascending, straight or slightly curved upward, 4-10(-13) mm, pubescent as rachis abaxially, glabrous adaxially. Flowers: sepals oblong, 2.5-4 mm, pubescent, (trichomes simple and stalked, 2-rayed); petals yellow, oblanceolate, 5-7 × 1.5-2.2 mm; anthers oblong, 0.5-0.8 mm. Fruits (not appressed to rachis), lanceolate to ovate or oblong-lanceolate, slightly to strongly twisted or plane, flattened, 5-15 × 2-3.5 mm; valves puberulent, trichomes simple and subsessile, 2(-4)-rayed, 0.03-0.25(-0.8) mm; ovules 14-28 per ovary; style (1-)1.5-3.5 mm. Seeds oblong, 1-1.3 × 0.6-0.8 mm. 2n = 18. Flowering Jun-Sep. Oak and pine-fir woodlands, aspen groves, rocky meadows; 2100-3600 m; Ariz., Colo., N.Mex.; Mexico (Nuevo León). Draba helleriana is highly variable and was divided by C. L. Hitchcock (1941) into four varieties. For a discussion of those and the circumscription of the species, see I. A. Al-Shehbaz and M. D. Windham (2007).

FNA 2010, Kearney and Peebles 1969, McDougal 1973
Duration: Perennial Nativity: Native Lifeform: Forb/Herb General: Herbaceous biennials to perennials, to 40 cm tall, stems 1-several arising from a caudex, branching above, leafy to the inflorescence, herbage hirsute throughout, trichomes simple, cruciform or with with 3-5 rays. Leaves: Basal leaves few from a basal rosette, petiolate, oblanceolate to obovate, 1-4 cm long, 2-7 mm wide, margins entire to dentate, cauline leaves alternate, sessile, oval, lanceolate, or oblong, 1-6 cm long, margins entire or shallowly dentate, blade surfaces pubescent. Flowers: Yellow, petals oblanceolate, pubescent to glabrous, 5-7 mm long, and 1.5-2 mm wide, sepals oblong, 2.5-4 mm long, pubescent, styles 1-3.5 mm long, flowers borne in dense racemes of 10-52 or more, these without bracts, the racemes becoming elongate, 4-10 mm long, horizontal and divaricate-ascending in fruit. Fruits: Strongly compressed silicles, elliptic-lanceolate, 5-15 mm long and 2-3.5 mm wide, slightly to strongly twisted or plane, flattened, pubescent, the trichomes mostly 2-rayed, fruiting pedicels erect to ascending. Seeds oblong, roughly 1 mm long and wide, n Ecology: Found in oak and pine fir woodlands, aspen groves, rocky meadows, from 7,000-12,000 ft (2134-3658 m); flowering June-September. Distribution: Colorado, New Mexico, Arizona; Mexico. Ethnobotany: The plant was made into a drink and taken when not feeling well, a decoction of leaves was taken for bad cough, sore kidney or gonorrhea, and the whole plant was used as a ceremonial emetic. Synonyms: Numerous, see Tropicos Editor: LCrumbacher 2011 Etymology: Draba comes from the Greek drabe for "sharp" or "acrid" and referring to the burning taste of the leaves which supposedly had a medicinal value as a poultice, while the meaning of helleriana is unknown.
Draba helleriana image
Anthony Mendoza  
Draba helleriana image
Anthony Mendoza  
Draba helleriana image
Sue Carnahan  
Draba helleriana image
Sue Carnahan  
Draba helleriana image
Patrick Alexander  
Draba helleriana image
Patrick Alexander  
Draba helleriana image
Patrick Alexander  
Draba helleriana image
Sue Carnahan  
Draba helleriana image
Patrick Alexander  
Draba helleriana image
Anthony Mendoza  
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
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Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image
Draba helleriana image