Oxytropis campestris var. minor
Oxytropis campestris var. jordalii
field locoweed, oxytrope mineur
jordal's field locoweed, jordal's locoweed, jordal's oxytrope
(2–)3–10(–13) cm;
stipules glabrous or glabrate abaxially, margins eciliate;
leaflets 11–23(–27), opposite or subopposite, blades 2–10 mm.
1.5–9 cm;
stipules glabrous or strigose abaxially, margins ± ciliate, apex often bristly;
leaflets 9–19, scattered or opposite, blades 1–11 mm.
(3–)5–9-flowered, subcapitate.
usually 2–9-flowered, subcapitate or somewhat elongate.
curved-ascending, 3–15(–18) cm, axis 0.3–1.5 cm in fruit.
3–12(–14) cm, axis 1–4.5 cm in fruit.
purple fading violet, 11–18 mm.
whitish or yellowish, sometimes polychrome, 10–14(–15) mm.
tube 5–6.5 mm, lobes deltate, 0.5–1.5(–2) mm.
tube (3.7–)4–5.5 mm, lobes 1–1.5 mm.
10–22 × 3.5–5 mm.
9–12 × 3.5–5 mm.
= 48.
= 32.
Oxytropis campestris var. minor
Oxytropis campestris var. jordalii
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.)
Variety jordalii is transitional to vars. roaldii and varians. Data from J. L. Jorgensen et al. (2003) give some support to O. jordalii and O. varians as distinct species.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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