Oxytropis campestris var. jordalii
Oxytropis campestris var. minor
jordal's field locoweed, jordal's locoweed, jordal's oxytrope
field locoweed, oxytrope mineur
1.5–9 cm;
stipules glabrous or strigose abaxially, margins ± ciliate, apex often bristly;
leaflets 9–19, scattered or opposite, blades 1–11 mm.
(2–)3–10(–13) cm;
stipules glabrous or glabrate abaxially, margins eciliate;
leaflets 11–23(–27), opposite or subopposite, blades 2–10 mm.
usually 2–9-flowered, subcapitate or somewhat elongate.
(3–)5–9-flowered, subcapitate.
3–12(–14) cm, axis 1–4.5 cm in fruit.
curved-ascending, 3–15(–18) cm, axis 0.3–1.5 cm in fruit.
whitish or yellowish, sometimes polychrome, 10–14(–15) mm.
purple fading violet, 11–18 mm.
tube (3.7–)4–5.5 mm, lobes 1–1.5 mm.
tube 5–6.5 mm, lobes deltate, 0.5–1.5(–2) mm.
9–12 × 3.5–5 mm.
10–22 × 3.5–5 mm.
= 32.
= 48.
Oxytropis campestris var. jordalii
Oxytropis campestris var. minor
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.)
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.)
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