Flora of North America species comparison

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Corispermum pallidum

pale bugseed
Habit Plants branched from base, 5–25 cm, covered with dendroid and almost stellate hairs and minute papillae (especially on veins of young bracts and distal leaves), occasionally almost glabrous.
Leaf

blades linear, narrowly linear, occasionally linear-spatulate, rarely almost filiform, flat or occasionally slightly convolute (especially at maturity and in dry plants), 2–5 × 0.1–0.2(–0.3) cm.
Bracts

usually narrowly ovate-lanceolate or lanceolate, (0.5–)1–1.5(–2) × 0.2–0.5 cm.
Inflorescences

lax or slightly condensed, interrupted only near base, linear.
Perianth

segment 1.
Fruits

pale, usually straw-colored or yellowish brown, occasionally with reddish brown spots, flattened or slightly convex abaxially, plane or slightly concave adaxially, rounded-obovate or obovate, distinctly broadest beyond middle (rarely closer to middle), 2.8–3.5(–3.8) × 2.4–2.8(–3.3) mm, slightly shiny or dull;

wing translucent, thin, usually 0.7–1 mm wide, margins erose or irregularly erose-denticulate (rarely almost entire), apex emarginate (notched) or rounded.

Corispermum pallidum
Phenology Flowering late summer–fall.
Habitat Sandy shores of lakes and rivers, inland open sands
Elevation 300-400 m (1000-1300 ft)
Distribution
from FNA
WA
[BONAP county map]
Discussion

Of conservation concern.

The combination of characteristics of Corispermum pallidum is very distinctive: pale, flattened, and small fruit body; very wide (especially as compared to the fruit dimensions), thin, translucent wing with erose margins, long style bases (ca. 0.7–1 mm, including their parts adnate to wing), distinctly divided in their upper parts to below the edge of the wing. Young bracts and distal leaves of C. pallidum are often papillose on margins and veins, in combination with typical branched trichomes. Corispermum pallidum seems to be related to the eastern Asian C. macrocarpum Bunge ex Maximowicz aggregate (subsect. Platyptera Mosyakin).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 4, p. 319.
Parent taxa Chenopodiaceae > Corispermum
Sibling taxa
C. americanum, C. hookeri, C. hyssopifolium, C. navicula, C. nitidum, C. ochotense, C. pacificum, C. pallasii, C. villosum, C. welshii
Name authority Mosyakin: Novon 5: 347, fig. 1B. (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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