Corispermum hyssopifolium
Corispermum ochotense
bugseed, hyssop-leaf bugseed
alaskan bugseed, Okhotia n bugseed, Russian bugseed
blades linear-lanceolate or linear; usually plane,1.5–3.5(–4) × 0.2–0.4(–0.5) cm.
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.
ovate or ovate-lanceolate (rarely narrowly ovate-lanceolate to ± lanceolate), 0.5–1.5(–2) × 0.3–0.7 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.
compact, usually not strongly condensed at apex, occasionally interrupted near base, linear, oblong-linear, or indistinctly clavate-linear.
compact and dense, short-clavate or almost ovoid (if linear, then all bracts leaflike).
segments 1(–3).
segment 1.
brown, dark brown, or deep olive green, usually without spots and warts, broadly elliptic, prominently convex abaxially, usually plane or slightly concave adaxially, obovate-elliptic, or ± orbiculate, broadest near middle (rarely slightly beyond middle), 2.2–3.2 (–3.5) × 1.7–2.8 mm shiny wing (when present) translucent at margins, 0.1(–0.15) mm wide, margins entire, apex rounded.
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.
Corispermum hyssopifolium
Corispermum ochotense
In addition to the key characteristics, Corispermum hyssopifolium is distinguished by having style bases short, barely exposed over the edge of wing and fruit surfaces which are glabrous and shiny.
The application of the Linnaean name Corispermum hyssopifolium is problematic. The standing lectotype (C. E. Jarvis et al. 1993; I. C. Hedge 1997) and traditional circumscription of C. hyssopifolium (as understood by M. M. Iljin 1936; P. Aellen 1961, 1964; and many others) are accepted here.
No unquestionable specimens of Corispermum hyssopifolium sensu stricto are known from North America. A collection from Colorado and some collections from Missouri approach this species most closely (S. L. Mosyakin 1995). However, their fruit morphology suggests that they are either members of the native Asian and North American group centered around C. pallasii, or resulted from hybridization between C. hyssopifolium and native representatives of subsect. Pallasiana.
The name Corispermum hyssopifolium has been misapplied to the majority of species of the genus.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
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 |
CA
WildflowerSearch
iNaturalist
USDA Plants Database
