Corispermum villosum

Rydberg

Bull. Torrey Bot. Club 24: 191. 1897.

Common names: Hairy bugseed
IllustratedEndemic
Synonyms: Corispermum emarginatum Rydberg Corispermum orientale var. emarginatum (Rydberg) J. F. Ma cbride
Treatment appears in FNA Volume 4. Treatment on page 317. Mentioned on page 314, 315, 316, 318, 320, 321.

Plants usually branched from the base, (5–) 10–30 (–35) cm, densely or sparsely covered with dendroid or stellate hairs (rarely with scattered papillae at margins of bracts), occasionally becoming glabrous. Leaf-blades linear-oblanceolate, linear, or rarely narrowly linear (usually rather abruptly narrowed into mucronulate apex), usually plane, (1–) 1.5–3.5 × (0.1–) 0.2–0.3 cm. Inflorescences rather compact, dense, condensed in distal 1/2, occasionally interrupted in proximal 1/2, usually clavate or clavate-linear (rarely ± ovate). Bracts ovate, ovatelanceolate, or narrowly ovatelanceolate, 0.5–1.5 (–2.5) × (0.3–) 0.5–1 cm. Perianth segment 1. Fruits yellowish-brown, light-brown, or dark-brown, usually with reddish-brown spots and occasionally whitish warts, strongly convex abaxially, plane or slightly convex (occasionally slightly concave) adaxially, elliptic or obovate-elliptic, usually broadest beyond middle, 1.8–3 (–3.2) × 1.5–2 mm, dull; wing absent or to 0.1 (–0.15) mm wide, margins entire, apex triangular.


Phenology: Flowering late summer–fall.
Habitat: Sand dunes, sandy and gravely shores, waste places
Elevation: elevation not known

Distribution

Alta., Ont., Que., Sask., Colo., Idaho, Ill., Minn., Mo., Mont., N.Dak., Oreg., Utah, Wash., Wis., Wyo.

Discussion

Corispermum villosum may also occur in British Columbia, Manitoba, Nevada, South Dakota, and Utah. It is probably introduced rather than native in Ontario (where it is found mostly in Thunder Bay district, known for its grain elevators and mills), Quebec, and Wisconsin. Plants from Minnesota and North Dakota are transitional toward C. americanum.

Corispermum villosum is also distinguished by having style bases forming a triangular “beak” distinctly protruding over the edge of the wing/fruit. Some specimens of C. villosum are very similar to the small-fruited and narrow-winged European representatives of C. pallasii. Together with some Eurasian species, C. pallasii, C. americanum, and C. villosum belong to the same group of closely related species, and occasional transitional forms between these taxa are not uncommon in North American material.

The names Corispermum orientale Lamarck and C. hyssopifolium were commonly misapplied to C. villosum.

Selected References

None.

Lower Taxa

None.

"broadest" is not a number.

... more about "Corispermum villosum"
orbiculate +, elliptic +, obovate +, ovate +, lenticular +, , +, concave +, plane +  and convex to almost +
verrucose +
Sergei L. Mosyakin +
Rydberg +
slippery +
aromatic +
small whitish +
convolute +, flat +, filiform +, linear +, linear-lanceolate +  and lanceolate +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
persistent +  and deciduous +
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 1.5 cm15 mm <br />0.015 m <br /> (?) +
ovatelanceolate +  and ovate +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
reddish-brown +, black +, brown +  and green +
Hairy bugseed +
Alta. +, Ont. +, Que. +, Sask. +, Colo. +, Idaho +, Ill. +, Minn. +, Mo. +, Mont. +, N.Dak. +, Oreg. +, Utah +, Wash. +, Wis. +  and Wyo. +
elevation not known +
horseshoe--shaped +
symmetric +, or +  and uniseriate +
0.3 cm3 mm <br />0.003 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
dark-brown +, light-brown +  and yellowish-brown +
1.8mm;3mm +
obovate-elliptic +, elliptic +, , +, convex +  and plane +
Sand dunes, sandy and gravely shores, waste places +
interrupted +  and condensed +
clavate-linear +  and clavate +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
wingless +  and winged +
erose-denticulate +, undulate +  and entire +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
crassinucellate +  and bitegmic +
campylotropous +
1 +  and single +
persistent +  and deciduous +
nonadherent +  and adherent +
accrescent +
papery +  and chartaceous +
Flowering late summer–fall. +
not accrescent +  and small +
Bull. Torrey Bot. Club +
pointing +  and ascending +
basal +, median +  and position +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
characteristic +
verrucate +  and striate +
rounded +  and flattened +
Illustrated +  and Endemic +
cylindric +
1 (?) +  and 3 (?) +
not armed +, not jointed +  and branched +
opposite +  and alternate +
ascending +  and erect +
not fleshy +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
Corispermum emarginatum +  and Corispermum orientale var. emarginatum +
Corispermum villosum +
Corispermum +
species +
whitish +  and reddish-brown spots +
polygamous +, dioecious +  and monoecious +
0-0.1(-0.15) mm +