Pterocaulon virgatum

(Linnaeus) de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 454. 1836.

Common names: Wand blackroot
Illustrated
Basionym: Gnaphalium virgatum Linnaeus Syst. Nat. ed. 10, 2: 1211. 1759
Treatment appears in FNA Volume 19. Treatment on page 477. Mentioned on page 476.

Plants 4–15 dm. Leaf blades linear to narrowly elliptic or linear-lanceolate, 5–10(–15) cm × (2–)5–10(–14) mm, lengths mostly 6–8 times widths, margins entire or minutely denticulate (revolute). Heads in open, interrupted, ± cylindric arrays (5–)8–20 cm (main axes visible between glomerules of heads). Involucres campanulate to cylindric, 4–5 mm. Pistillate florets 25–50. Functionally staminate florets 2–4(–5). Cypselae 1–1.4 mm.


Phenology: Flowering Aug–Oct.
Habitat: Marshy areas, ditches, moist places in woods, in sand, sandy loam, and sandy clay
Elevation: 0–20 m

Distribution

V19-800-distribution-map.gif

La., Tex., Mexico (Tamaulipas), West Indies, Central America, South America.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Pterocaulon virgatum"
Guy L. Nesom +
(Linnaeus) de Candolle +
Gnaphalium virgatum +
Wand blackroot +
La. +, Tex. +, Mexico (Tamaulipas) +, West Indies +, Central America +  and South America. +
0–20 m +
Marshy areas, ditches, moist places in woods, in sand, sandy loam, and sandy clay +
Flowering Aug–Oct. +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
Illustrated +
Compositae +
Pterocaulon virgatum +
Pterocaulon +
species +