Oxytropis campestris var. minor
Oxytropis campestris var. johannensis
field locoweed, oxytrope mineur
johann's locoweed, oxytrope du fleuve saint-jean
(2–)3–10(–13) cm;
stipules glabrous or glabrate abaxially, margins eciliate;
leaflets 11–23(–27), opposite or subopposite, blades 2–10 mm.
4–26 cm;
stipules glabrous or sparsely pilose abaxially, margins ciliate;
leaflets 15–29, opposite or subopposite, blades 3–29 mm.
(3–)5–9-flowered, subcapitate.
7–12(–14)-flowered.
curved-ascending, 3–15(–18) cm, axis 0.3–1.5 cm in fruit.
erect, (4–)8–36 cm, axis 1.5–9(–11) cm in fruit.
purple fading violet, 11–18 mm.
usually purple, rarely white, 12–18.5 mm.
tube 5–6.5 mm, lobes deltate, 0.5–1.5(–2) mm.
tube 5–6 mm, lobes usually lanceolate, (1–)2–3 mm.
10–22 × 3.5–5 mm.
14–27 × 5–9 mm.
= 48.
= 48.
Oxytropis campestris var. minor
Oxytropis campestris var. johannensis
Putative reports of var. minor from the Mackenzie Mountains are probably referable to the purple-flowered var. roaldii, from which var. minor differs in its flowers that average larger, and in the longer calyx tube. There are several specimens from Churchill, Manitoba, that have been variously assigned to vars. johannensis, minor, or varians. Field studies of these populations need to be undertaken to resolve this problem. The Pan-Arctic Flora (http://panarcticflora.org/) treats this taxon as a distinct species, Oxytropis terrae-novae (with O. campestris var. johannensis as a synonym).
(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.)
WildflowerSearch
iNaturalist
USDA Plants Database
