Flora of North America species comparison

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Corispermum hookeri var. hookeri

Corispermum hookeri
Photo is of parent taxon

Hooker bugseed, Hooker's bugseed

Hooker bugseed, Hooker's bugseed
Habit Plants branched from base, 10–40(–60) cm, sparsely covered with dendroid and almost stellate hairs.
Leaf

blades narrowly lanceolate or linear-lanceolate, plane, 2–5 × (0.1–)0.2–0.5(–0.6) cm.
Bracts

ovate or ovate-lanceolate, 0.5–1.5(–2) × 0.3–1 cm.
Inflorescences

dense throughout, rarely interrupted, ovate, ovate-clavate.

usually dense, ovoid, ovate-clavate, or ovate-cylindric, rarely interrupted near base.
Perianth

segment 1.
Fruits

oblong-obovate or obovate.

usually deep olive green, brown, or rarely to almost black, usually without spots and/or warts, or occasionally spotted, strongly convex abaxially, prominently concave to almost plane adaxially, usually broadest beyond middle, (3.2–)3.5–4.5(–5) × 2.2–3.3(–3.5) mm;

wing (when present) semitranslucent, to 0.2 mm wide, margins entire, apex rounded or indistinctly triangular.

Corispermum hookeri var. hookeri

Corispermum hookeri
Phenology Flowering late summer–fall.
Habitat Sandy and gravely shores of rivers and streams, sand dunes, waste places
Elevation 0-100 m (0-300 ft)
Distribution
from FNA
AB; MB; NT; ON; SK
[BONAP county map]
from FNA
AB; BC; MB; NT; ON; SK
[BONAP county map]
Discussion

Specimens closely approaching var. hookeri, but with smaller fruits, i.e., transitional toward Corispermum villosum, are known from Montana and North Dakota. Specimens from Ontario were probably introduced from the prairie region.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Varieties 2 (2 in the flora).

The inflorescence bracts of Corispermum hookeri are conspicuously imbricate (usually strongly overlapping). Corispermum hookeri seems to be closely related to the narrow-winged taxa, C. villosum and C. ochotense, and to C. pallasii sensu stricto. The names C. orientale and C. hyssopifolium have been commonly misapplied to this species.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Inflorescences dense throughout, rarely interrupted. Fruits oblong-obovate to obovate
var. hookeri
1. Inflorescences dense only at apex, interrupted. Fruits elongate to oblong-obovate
var. pseudodeclinatu
Source FNA vol. 4, p. 318. FNA vol. 4, p. 318.
Parent taxa Chenopodiaceae > Corispermum > Corispermum hookeri Chenopodiaceae > Corispermum
Sibling taxa
C. hookeri var. pseudodeclinatum
C. americanum, C. hyssopifolium, C. navicula, C. nitidum, C. ochotense, C. pacificum, C. pallasii, C. pallidum, C. villosum, C. welshii
Subordinate taxa
C. hookeri var. hookeri, C. hookeri var. pseudodeclinatu
Name authority unknown Mosyakin: Novon 5: 349. (1995)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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