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Ogilvie Range Draba

Habit Perennials; (stoloniferous); caudex branched (sparsely covered with petiole remains, branches slender, creeping, loosely matted); often scapose.
Stems

unbranched, 0.4–1.5 dm, glabrous or pubescent throughout, trichomes simple and short-stalked, 2- or 3-rayed, 0.1–0.5 mm.

Basal leaves

not rosulate; (subopposite);

petiolate;

petiole base and margin ciliate or not, (trichomes simple, 0.2–0.8 mm);

blade oblanceolate or lanceolate, 0.5–1.5 cm × 1.5–5 mm, margins entire, surfaces glabrous or sparsely pubescent with simple and stalked, 2–4-rayed trichomes, 0.1–0.5 mm, (midvein obscure abaxially).

Cauline leaves

(0 or) 1 or 2; (subopposite);

sessile;

blade ovate or oblong, margins entire, surfaces pubescent as basal.

Racemes

5–13-flowered, ebracteate, elongated in fruit;

rachis not or slightly flexuous, glabrous or pubescent as stem.

Flowers

sepals ovate, 2–3 mm, glabrous or pubescent, (trichomes simple);

petals golden yellow, obovate, 3.5–6 × 2–3 mm;

anthers ovate, 0.3–0.5 mm.

Fruiting pedicels

horizontal to divaricate, often curved upward, 6–13(–17) mm, glabrous or sparsely pubescent, trichomes simple and 2-rayed.

Fruits

oblong, plane, flattened, 6–9 × 2–3 mm;

valves glabrous;

ovules 8–20 per ovary;

style 0.4–1 mm.

Seeds

ovoid, 0.9–1 × ca. 0.6 mm.

2n

= 16.

Draba ogilviensis

Phenology Flowering Jun–Aug.
Habitat Tundra, river flats and banks, exposed talus slopes, hummocks in wet sedge meadows
Elevation 900-2200 m (3000-7200 ft)
Distribution
from FNA
AK; NT; YT
[BONAP county map]
Discussion

The limits of Draba ogilviensis were confused by authors who reduced it to synonymy of D. juvenilis or D. sibirica. A thorough discussion of the three species and their distinguishing characteristics was provided by D. F. Murray and C. L. Parker (1999).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 7, p. 324.
Parent taxa Brassicaceae > tribe Arabideae > Draba
Sibling taxa
D. abajoensis, D. albertina, D. aleutica, D. alpina, D. aprica, D. arabisans, D. arctica, D. arctogena, D. argyrea, D. arida, D. asprella, D. asterophora, D. aurea, D. aureola, D. bifurcata, D. borealis, D. brachycarpa, D. brachystylis, D. breweri, D. burkei, D. californica, D. cana, D. carnosula, D. chamissonis, D. cinerea, D. corrugata, D. corymbosa, D. crassa, D. crassifolia, D. cruciata, D. cuneifolia, D. cusickii, D. cyclomorpha, D. daviesiae, D. densifolia, D. exunguiculata, D. fladnizensis, D. glabella, D. globosa, D. graminea, D. grandis, D. grayana, D. heilii, D. helleriana, D. hitchcockii, D. howellii, D. incana, D. incerta, D. incrassata, D. inexpectata, D. jaegeri, D. juvenilis, D. kassii, D. kluanei, D. lactea, D. lemmonii, D. lonchocarpa, D. longisquamosa, D. macounii, D. maguirei, D. malpighiacea, D. micropetala, D. mogollonica, D. monoensis, D. mulliganii, D. murrayi, D. nemorosa, D. nivalis, D. norvegica, D. novolympica, D. oblongata, D. oligosperma, D. oreibata, D. oxycarpa, D. palanderiana, D. pauciflora, D. paucifructa, D. paysonii, D. pectinipila, D. pedicellata, D. pennellii, D. petrophila, D. pilosa, D. platycarpa, D. porsildii, D. praealta, D. pterosperma, D. ramosissima, D. ramulosa, D. rectifructa, D. reptans, D. ruaxes, D. santaquinensis, D. saxosa, D. scotteri, D. serpentina, D. sharsmithii, D. sibirica, D. sierrae, D. simmonsii, D. smithii, D. sobolifera, D. spectabilis, D. sphaerocarpa, D. sphaeroides, D. standleyi, D. stenoloba, D. stenopetala, D. streptobrachia, D. streptocarpa, D. subalpina, D. subcapitata, D. subumbellata, D. trichocarpa, D. ventosa, D. verna, D. viridis, D. weberi, D. yukonensis, D. zionensis
Name authority Hultén: Bot. Not. 119: 315, fig. 2. (1966)
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