Oxytropis campestris var. varians
Oxytropis campestris var. johannensis
field locoweed
johann's locoweed, oxytrope du fleuve saint-jean
3–40 cm;
stipules usually ± pilose abaxially, sometimes glabrous, margins ciliate, with clavate processes;
leaflets (9–)15–45, scattered, subopposite, or fasciculate, blades 2–24 mm.
4–26 cm;
stipules glabrous or sparsely pilose abaxially, margins ciliate;
leaflets 15–29, opposite or subopposite, blades 3–29 mm.
(4–)10–25+-flowered.
7–12(–14)-flowered.
3.5–35+ cm, axis 1.5–21 cm in fruit.
erect, (4–)8–36 cm, axis 1.5–9(–11) cm in fruit.
usually yellowish or whitish, rarely purplish in polychrome populations, sometimes fading purplish, keel tip sometimes maculate, usually 12–17(–19) mm.
usually purple, rarely white, 12–18.5 mm.
pilosulous, hairs black and pale, tube 4–7.5 mm, lobes (1.2–)1.5–3 mm.
tube 5–6 mm, lobes usually lanceolate, (1–)2–3 mm.
12–19(–24+) × 3.5–6 mm.
14–27 × 5–9 mm.
= 48, 96, 98.
= 48.
Oxytropis campestris var. varians
Oxytropis campestris var. johannensis
Variety varians is a highly variable entity, with numerous plants with differing morphological phases often growing together on the same gravel bar or hillside in portions of Alaska and Yukon. Alpine phases of the variety, especially in southeastern Alaska, northern British Columbia, and southwestern Yukon, closely simulate high altitude materials of var. cusickii at its northern limits in Alberta and southern British Columbia. Specimens of var. varians appear to intergrade with materials of var. jordalii in montane sites near Juneau. Certainly, this is the northern counterpart of var. spicata, from which it differs in characters that are altogether tenuous. Some specimens from eastern Alaska show evidence of intermediacy between var. varians and Oxytropis splendens. These form the basis of Oxytropis tananensis Jurtzev (B. A. Jurtzev 1993b), which the Pan-Arctic Flora (http://panarcticflora.org/) recognizes as a distinct species.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Plants of var. johannensis from south of James Bay, Ontario, have fasciculate leaves and relatively short fruits; the latter characteristic indicates a close relationship to var. chartacea. Some specimens appear to be transitional to Oxytropis splendens. The Pan-Arctic Flora (http://panarcticflora.org/) treats var. johannensis as a synonym of O. terrae-novae.
Variety johannensis is in the Center for Plant Conservation’s National Collection of Endangered Plants.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
BC
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
