Zizaniopsis

Doll & Asch.
Treatment appears in FNA Volume 24. Treatment on page 52.
 TaxonIllustrator 
FNA24 P18 Zizaniopsis pg 53.jpegZizaniopsis miliaceaSandy Long

Plants perennial or annual; aquatic, rooted and emergent; rhizomatous; monoecious. Culms 1-4 m, erect or decumbent, sometimes rooting at the nodes. Leaves basal and cauline; sheaths open, somewhat laterally compressed; ligules scarious; pseudopetioles absent; blades flat or folded at the base, lanceolate. Inflorescences terminal panicles, staminate and pistillate spikelets on the same branches, staminate spikelets proximal, pistillate spikelets distal; disarticulation beneath the spikelets; pedicel apices cupulate. Spikelets unisexual, laterally compressed to subterete, lemma margins not clasping the paleas, with 1 floret. Glumes absent; calluses glabrous. Staminate lemmas membranous, 5-7-veined, acuminate or terminally awned; paleas similar to the lemmas, 3-veined; lodicules 2; anthers 6. Pistillate lemmas membranous, 7-veined, terminally awned; paleas similar to the lemmas, 3-veined, awned or unawned; styles 2, bases fused, stigmas terminally exserted, plumose. Fruits achenes, ellipsoid or obovoid, beaked by the persistent style base; pericarps shell-like, partially free from the seed, smooth, coriaceous or crustaceous; seeds oblong, subterete, or 2-angled; embryos basal; hila linear, x = 12.

Distribution

Md., Okla., Miss., Tex., La., Mo., Ala., Tenn., N.C., S.C., Va., Ark., Ill., Ga., Ky., Fla.

Discussion

Zizaniopsis grows from the southern United States to Argentina. All of its five species grow in wet habitats. Only Zizaniopsis miliacea is native to and found in the Flora region.

"decumbent" is not a number.

... more about "Zizaniopsis"
Edward E. Terrell +
Doll & Asch. +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not evident +
lanceolate +, folded +  and flat +
spikelike +
20 cm200 mm <br />0.2 m <br /> (500 cm5,000 mm <br />5 m <br />) +
decumbent +  and erect +
100 cm1,000 mm <br />1 m <br /> (400 cm4,000 mm <br />4 m <br />) +
Md. +, Okla. +, Miss. +, Tex. +, La. +, Mo. +, Ala. +, Tenn. +, N.C. +, S.C. +, Va. +, Ark. +, Ill. +, Ga. +, Ky. +  and Fla. +
0 +  and 1/3 +
capillary +
sometimes longer +
sterile +, fertile +, sexual +, unisexual +  and bisexual +
round +  and compressed +
cylindrical +, oblong +  and ovoid +
subtending +
reduced +
uncinate +
solid +  and hollow +
aerenchymatous +
cauline +  and basal +
7-veined +, pistillate +, 5-7-veined +  and staminate +
awned +  and acuminate +
membranous +
annular +
inconspicuous +
fleshy +  and membranous +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
unawned +  and awned +
well-developed +
1-keeled +
crustaceous +  and coriaceous +
not prolonged +
fox2000a +, mcvaugh1983a +  and terrell1974a +
2-angled +, subterete +  and oblong +
compressed +
pistillate +  and staminate +
[9/10] +, /2 +  and 1 +
laterally compressed +  and subterete +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
triangular +  and dome--shaped +
Gramineae +
Zizaniopsis +
Poaceae tribe Oryzeae +
membranous +
rhizomatous +  and rooted +
annual +  and perennial +