Draba scotteri

G. A. Mulligan

Canad. J. Bot. 57: 1874. 1979.

EndemicConservation concern
Treatment appears in FNA Volume 7. Treatment on page 335. Mentioned on page 286.

Perennials; (cespitose); caudex simple or branched (covered with persistent leaves); scapose. Stems unbranched, 0.2–1.4 dm, pubescent throughout, trichomes 2–8-rayed, 0.07–0.4 mm, and, sometimes, simple ones, 0.2–0.8 mm. Basal leaves rosulate; petiolate; petiole base ciliate, (trichomes simple, 0.2–1 mm); blade oblanceolate, 0.4–1.5 cm × 1–3 mm, margins entire, (ciliate as petiole base), surfaces pubescent with short-stalked, stellate, 8–12-rayed trichomes, 0.1–0.4 mm. Cauline leaves 0. Racemes 1–9-flowered, usually ebracteate, rarely proximalmost flower subtended by a tiny bract, usually considerably elongated in fruit; rachis not flexuous, pubescent as stem. Fruiting pedicels divaricate-ascending, straight, 3–8(–12) mm, pubescent as stem. Flowers: sepals oblong, 2–3 mm, subapically pubescent, (trichomes simple); petals yellow, obovate to spatulate, 3.5–5.5 × 1.5–2.5 mm; anthers ovate, 0.4–0.5 mm. Fruits lanceolate to narrowly so, plane, flattened, 5–11 × 1.5–2.5 mm; valves pubescent, trichomes simple, 0.1–0.4 mm, occasionally with some 2-rayed ones; ovules 12–18 per ovary; style 0.3–1 mm. Seeds ovoid, 0.8–1.2 × 0.6–0.7 mm. 2n = 96.


Phenology: Flowering Jun–Jul.
Habitat: Talus and gravelly summits in alpine communities
Elevation: 1200-2000 m

Discussion

Of conservation concern.

The description of Draba scotteri is based on collections from Kluane National Park, southwestern Yukon Territory.

Selected References

None.

Lower Taxa

None.
... more about "Draba scotteri"
Ihsan A. Al-Shehbaz +, Michael D. Windham +  and Reidar Elven +
G. A. Mulligan +
1200-2000 m +
Talus and gravelly summits in alpine communities +
Flowering Jun–Jul. +
Canad. J. Bot. +
Endemic +  and Conservation concern +
Abdra +, Erophila +, Nesodraba +  and Tomostima +
Draba scotteri +
species +