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Peruvian watergrass

Habit Plants stoloniferous, fully or mostly emergent.
Culms

10-40 cm, suberect, branching, fully or mostly emergent.

Leaves

mostly basal or scattered along the culms, not conspicuously floating or streaming in the current;

sheaths glabrous or ciliate;

ligules to 5 mm, lanceolate, acuminate;

blades 3-30 cm long, 0.5-4 mm wide, glabrous, sometimes scabridulous.

Inflorescences

panicles.

Achenes

1-1.3 mm, broadly ellipsoid to subglobose, smooth, lustrous.

Staminate

panicles 1-3 cm, terminal, with 10-25 spikelets; staminate florets 3.5-8 mm, caducous;

lemmas lanceolate, 5-veined;

paleas similar, 3-veined;

anthers 6, 2-5 mm.

Pistillate

panicles to 7 cm, arising from the lower to middle nodes of the culms, partially exserted from the sheaths, with 10-25 spikelets;

branches filiform, spreading to reflexed; pistillate florets 2-2.5 mm, caducous;

lemmas 7-14-veined, erose to acuminate or caudate;

paleas similar to the lemmas, 5-10-veined;

stigmas 2-3 mm.

2n

= 24.

Luziola peruviana

Discussion

Luziola peruviana has been found at scattered locations from Texas to Florida. It is native to the Caribbean, Central America, and South America, and grows in wet places and shallow water along streams and lakes.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Distribution
from FNA
FL; LA; TX
[BONAP county map]
Parent taxa Poaceae > subfam. Ehrhartoideae > tribe Oryzeae > Luziola
Sibling taxa
L. bahiensis, L. fluitans
Name authority J.F. Gmel.
Source Flora of North America vol. 24, p. 55.
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