Corispermum ochotense
Corispermum pallasii
alaskan bugseed, Okhotia n bugseed, Russian bugseed
Pallas' bugseed, Siberian bugseed
blades linear-oblanceolate (linear-spatulate) or linear, often broadest in distal 1/3, plane, 1–3.5 × 0.1–0.3 cm, abruptly contracted into mucronulate apex.
blades linear-lanceolate, linear, or occasionally narrowly linear, usually plane, 1.5–4 × (0.1–)0.2–0.4(–0.5) cm.
ovate-lanceolate, lanceolate, or linear-lanceolate (proximal bracts usually linear, leaflike, 4–7 times fruit length), (0.5–)1–1.5(–3) × (0.1–)0.2–0.5 cm.
ovate or ovate-lanceolate (rarely narrowly ovate-lanceolate), ca. (0.5–)1–3 × 0.4–0.8 cm.
compact and dense, short-clavate or almost ovoid (if linear, then all bracts leaflike).
usually compact and dense, rarely ± lax and interrupted in proximal 1/2, clavate, narrowly clavate, or almost ovate in outline.
segment 1.
segment 1.
reddish brown, dark brown, deep olive green (then often tinged with red), or deep beet red, usually without dark spots or whitish warts, strongly convex abaxially, plane or slightly concave adaxially, obovate-elliptic or almost obovate, usually broadest near middle (rarely slightly beyond middle), (2.5–)2.8–4 × 1.8–2.7 mm;
wing translucent only at margins, thick, (0.1–)0.2–0.3 mm wide, margins entire, apex broadly triangular or almost rounded.
light brown, brown, dark brown, or deep olive green, often with reddish brown spots and whitish warts, convex abaxially, usually plane or slightly concave adaxially, obovate or obovate-elliptic, usually broadest beyond middle, (3.2–)3.5–4.5(–4.7) × (2–)2.4–3 mm;
wing translucent only at margin (or in marginal 1/2), thick, 0.2–0.4(–0.5) mm wide, margins entire or indistinctly erose, apex broadly triangular, rarely rounded or very indistinctly emarginate.
Corispermum ochotense
Corispermum pallasii
Varieties 2 (2 in the flora).
Corispermum ochotense is conspicuous in that it is usually red at maturity. No specimens of Corispermum have been seen from Yukon Territory, but the species might be expected there. One collection of immature plants from northern Saskatchewan (see S. L. Mosyakin 1995) probably also belongs to C. ochotense. Specimens of C. ochotense have been misidentified in North America and northeast Asia as C. hyssopifolium Linnaeus and C. sibiricum Iljin.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Corispermum pallasii is placed in subsect. Pallasiana Mosyakin, which is evidently of Asian origin. Related taxa are widespread in southern Siberia, central Asia, Mongolia, and China. It is also widespread in Europe, where it was most probably initially introduced in Germany by German botanists and gardeners, who obtained seeds from Siberia through Russian botanical gardens (G. F. Schnittspahn 1851; U.-V. Köck 1986). In Europe this species was known as C. leptopterum (Ascherson) Iljin. It is not known yet whether this species was introduced to North America or is at least partly native within its North American range. Judging from the very close taxonomic affinity of C. pallasii to other, native North American taxa (e.g., C. americanum, C. villosum, C. ochotense, C. hookeri) and morphological similarity of its fruits to some fossil Corispermum fruits, the hypothesis of the native status of C. pallasii in North America seems to be preferable; secondary introduction of some populations from Europe is also not improbable.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Fruits (2.5-)2.8-3.2 × 1.8-2.2 mm | var. ochotense |
1. Fruits 3.2-4 × 2.2-2.7 mm | var. alaskanum |
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