Corispermum navicula

Mosyakin

Novon 5: 349. 1995.

Common names: Boat-shaped bugseed
Treatment appears in FNA Volume 4. Treatment on page 317. Mentioned on page 315, 316.

Plants branched from the base or nearly so, 5–15 (–25) cm, sparsely covered with dendroid or stellate hairs, or almost glabrous. Leaf-blades linear-lanceolate, linear, occasionally narrowly lanceolate, usually plane, (1.5–) 2–4 × 0.1–0.5 cm. Inflorescences compact and dense, ovoid, ovate or oblong-obovate. Bracts ovate or ovatelanceolate (occasionally proximal ones leaflike, narrowly ovatelanceolate or lanceolate), 0.5–2 × 0.2–0.6 cm. Perianth segment 1. Fruits brown, dark-brown, or deep olive green, usually with numerous reddish-brown spots and whitish warts, strongly convex abaxially, usually strongly concave adaxially, elongate-obovate or obovate-elliptic, broadest beyond middle, (4.2–) 4.5–5 (–5.2) × 2.5–3 mm; wing not translucent or translucent only at margin, thick, 0.1–0.2 (–0.3) mm wide (occasionally nearly absent), margins entire or irregularly erose, usually involute toward adaxial face of fruit, apex rostrate, triangular (wing long-adnate to style bases).


Phenology: Flowering late summer–fall.
Habitat: Sand dunes, probably also sandy and gravely shores
Elevation: 2500 m

Discussion

Corispermum navicula is very similar in its fruit morphology to the Siberian species C. bardunovii M. Popov ex M. Lomonosova (M. N. Lomonosova 1992). Probably, the two taxa represent results of parallel evolution (or parallel variability?) within North American and Asian representatives of the same species aggregate. The most distinctive character of both C. navicula and C. bardunovii, an elongated fruit body with almost parallel margins in the middle portion and distinctly triangular apex, shows a transition toward representatives of Corispermum sect. Declinata Mosyakin. Additional study of C. navicula would help clarify its relationships with other species. Some specimens from Oklahoma may also belong to C. navicula.

Selected References

None.

Lower Taxa

None.

"broadest" is not a number.

... more about "Corispermum navicula"
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 +
persistent +  and deciduous +
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
ovatelanceolate +  and ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
reddish-brown +, black +, brown +  and green +
Boat-shaped bugseed +
2500 m +
horseshoe--shaped +
symmetric +, or +  and uniseriate +
olive green +, deep +, dark-brown +  and brown +
obovate-elliptic +, elongate-obovate +, concave +  and convex +
Sand dunes, probably also sandy and gravely shores +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
oblong-obovate +, ovate +  and ovoid +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.5 cm5 mm <br />0.005 m <br /> (?) +
erose +  and entire +
erose-denticulate +, undulate +  and entire +
0.5 cm5 mm <br />0.005 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 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 +
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 navicula +
Corispermum +
species +
whitish +  and reddish-brown spots +
polygamous +, dioecious +  and monoecious +
translucent +  and not translucent +
0.1mm;0.2mm +