Corispermum pallidum

Mosyakin

Novon 5: 347, fig. 1B. 1995.

Common names: Pale bugseed
Treatment appears in FNA Volume 4. Treatment on page 319. Mentioned on page 314, 316.

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. Inflorescences lax or slightly condensed, interrupted only near base, linear. Bracts usually narrowly ovatelanceolate or lanceolate, (0.5–) 1–1.5 (–2) × 0.2–0.5 cm. 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.


Phenology: Flowering late summer–fall.
Habitat: Sandy shores of lakes and rivers, inland open sands
Elevation: 300-400 m

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).

Selected References

None.

Lower Taxa

None.

"broadest" is not a number.

... more about "Corispermum pallidum"
orbiculate +, elliptic +, obovate +, ovate +, lenticular +, , +, concave +, plane +  and convex to almost +
verrucose +
Sergei L. Mosyakin +
Mosyakin +
slippery +
aromatic +
small whitish +
convolute +, flat +, filiform +, linear +, linear-lanceolate +  and lanceolate +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
persistent +  and deciduous +
1 cm10 mm <br />0.01 m <br /> (?) +  and 1.5 cm15 mm <br />0.015 m <br /> (?) +
lanceolate +  and ovatelanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
reddish-brown +, black +, brown +  and green +
Pale bugseed +
300-400 m +
horseshoe--shaped +
symmetric +, or +  and uniseriate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
reddish-brown spots +, yellowish-brown +, straw-colored +  and pale +
2.8mm;3.5mm +
dull +  and shiny +
obovate +, rounded-obovate +, , +, concave +, plane +, convex +  and flattened +
0.24 cm2.4 mm <br />0.0024 m <br /> (?) +  and 0.28 cm2.8 mm <br />0.0028 m <br /> (?) +
Sandy shores of lakes and rivers, inland open sands +
interrupted +, condensed +  and lax +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.2 cm2 mm <br />0.002 m <br /> (?) +
wingless +  and winged +
erose-denticulate +
reddish-brown spots +
obovate +, rounded-obovate +, , +, concave +, plane +, convex +  and flattened +
broadest +
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 +
pointing +  and ascending +
basal +, median +  and position +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
characteristic +
verrucate +  and striate +
rounded +  and flattened +
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 pallidum +
Corispermum +
species +
polygamous +, dioecious +  and monoecious +
0.7mm;1mm +