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Draba heilii
Draba heilii
Family:
Brassicaceae
Images
not available
Flora of North America
Resources
Ihsan A. Al-Shehbaz, Michael D. Windham, Reidar Elven in Flora of North America (vol. 7)
Perennials;
(densely cespitose); caudex few-branched (compact, with persistent, thickened leaves); not scapose.
Stems
unbranched or branched distally, 0.3-0.7 dm, glabrous throughout or, rarely, pilose, trichomes simple and stalked, 2-rayed, 0.2-0.5 mm.
Basal leaves
(persistent, imbricate); rosulate; undifferentiated into blade and petiole (becoming indurate at base); blade linear-lanceolate, 0.5-0.8 cm × 1-1.5(-2) mm, margins entire, surfaces glabrous or, rarely, pilose with simple and stalked, 2-rayed trichomes, (margins ciliate with simple and, rarely, 2-rayed setiform trichomes, 0.5-1.3 mm, midvein prominent).
Cauline leaves
6-8; sessile; blade linear-oblong, 0.5-0.8 cm × 1-2 mm (widest about base), margins entire, (ciliate).
Racemes
10-26-flowered, ebracteate, elongated in fruit; rachis not flexuous, usually glabrous, rarely pubescent, (trichomes non-crisped, simple and 2-rayed).
Fruiting pedicels
ascending, straight, 3-5(-7) mm, usually glabrous, rarely pilose, (trichomes simple and 2-rayed, stalked).
Flowers:
sepals ovate, 1.7-2.7 mm, usually glabrous, rarely pilose, (trichomes simple); petals yellow, oblong-oblanceolate, 4-6 × 1.5-2 mm; anthers oblong, 0.5-0.6 mm.
Fruits
narrowly lanceolate, twisted 1/2 turn or plane, flattened, 7-10 × 1.3-1.6 mm; valves glabrous; ovules 16-20 per ovary; style 0.7-1.3 mm.
Seeds
ovoid, 1 × 0.6 mm. Flowering Jun-Jul. Alpine tundra; ca. 3700 m; N.Mex.
Draba heilii
is restricted to Mora and Rio Arriba counties.
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