Amphicarpum amphicarpon

(Pursh) Nash
Common names: Pursh's blue maidencane Hairy maidencane
Synonyms: Amphicarpum purshii
Treatment appears in FNA Volume 25. Treatment on page 387.

Plants annual. Culms 30-80 cm, erect. Leaves mostly basal; sheaths hirsute; blades 10-15 cm long, 5-15 mm wide, hirsute on both surfaces, margins ciliate. Subterranean spikelets 7-8 mm, acuminate. Aerial panicles 3-20 cm; aerial spikelets 4-5 mm, ellipsoidal. 2n = 18.

Discussion

Amphicarpum amphicarpon grows in sandy pinelands of the eastern United States. It used to be known as A. purshii Kunth, but A. amphicarpon has priority.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number."elongated" is not a number.

... more about "Amphicarpum amphicarpon"
Acute (?) +  and Acuminate (?) +
anatomy +  and kranz +
J.K. Wipff +
(Pursh) Nash +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
usually linear +  and lanceolate occasionally ovate +
5mm;15mm +
erect;ascending +
spikelike +
not developed +
well-developed +
immature +  and mature +
terete +  and compressed +
sometimes longer +
Pursh's blue maidencane +  and Hairy maidencane +
branched +  and solid +
30 cm300 mm <br />0.3 m <br /> (80 cm800 mm <br />0.8 m <br />) +
Md. +, N.J. +, N.C. +, Mass. +, S.C. +, Del. +, Ala. +, Fla. +, Va. +, Ga. +  and N.Y. +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
not developed +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
bracteate +  and ebracteate +
subterranean +  and aerial +
solid +  and hollow +
coriaceous +
membranous +
inconspicuous +
thin;thin +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
3 cm30 mm <br />0.03 m <br /> (20 cm200 mm <br />0.2 m <br />) +
dry +  and fleshy +
not developed +
elongate +
in triplets +  and paired +
aerial +  and subterranean +
ellipsoidal +  and acuminate +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 (?) +  and 3 (?) +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
Amphicarpum purshii +
Amphicarpum amphicarpon +
Amphicarpum +
species +
membranous +
ellipsoidal +  and turgid +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +