Saccharum ravennae

(L.) L.
Common names: Ravennagrass
Synonyms: Erianthus ravennae
Treatment appears in FNA Volume 25. Treatment on page 614.

Plants cespitose. Culms 2-4 m, glabrous; nodes glabrous. Sheaths glabrous; auricles absent; ligules 0.6-1.1 mm; blades 50-100 cm long, 5-14 mm wide, glabrous. Peduncles 40-80 cm, glabrous; panicles lanceolate; rachises 30-70 cm, glabrous; primary branches 6-20 cm, appressed or spreading; rame internodes 1-2 mm, with hairs. Sessile spikelets 4-6 mm long, 0.7-0.9 mm wide, straw-colored. Callus hairs 4-6 mm, subequal to the spikelets, white; lower glumes smooth, 4-5-veined; upper glumes 3-veined; lower lemmas 3-5 mm, 1-veined; upper lemmas subequal to the lower lemmas, without veins, entire; awns 2-5 mm, flat, straight or curved at the base; lodicule veins not extending into hairlike projections; anthers 3. Pedicels 1-3 mm, pubescent. Pedicellate spikelets similar to the sessile spikelets. 2n = 20.

Distribution

Md., Tenn., Colo., N.Mex., Ohio, Utah, Calif., Del., Mich., D.C., Kans., N.Y., Ill., Ga., Okla., Ariz., Fla., Mo.

Discussion

Saccharum ravennae is native to southern Europe and western Asia. It is grown as an ornamental in the Flora region, occasionally escaping and persisting.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Saccharum ravennae"
anatomy +  and kranz +
Robert D. Webster +
(L.) L. +
1 (?) +  and 3 (?) +
curved +  and straight +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
pseudopetiolate +
well-developed +
50 cm500 mm <br />0.5 m <br /> (100 cm1,000 mm <br />1 m <br />) +
usually linear +  and lanceolate occasionally ovate +
reduced +
0.5 cm5 mm <br />0.005 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
spikelike +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Ravennagrass +
purple +  and reddish +
200 cm2,000 mm <br />2 m <br /> (400 cm4,000 mm <br />4 m <br />) +
not woody +
Md. +, Tenn. +, Colo. +, N.Mex. +, Ohio +, Utah +, Calif. +, Del. +, Mich. +, D.C. +, Kans. +, N.Y. +, Ill. +, Ga. +, Okla. +, Ariz. +, Fla. +  and Mo. +
capillary +
sometimes longer +
concealing +
compressed +  and terete +
shorter or longer +
subtending +
villous +  and glabrous +
2-keeled +
subequal +
chartaceous +  and coriaceous +
uncinate +
bracteate +  and ebracteate +
pedunculate +  and multiple-stalked +
ascending +  and appressed +
axillary +  and subtending +
solid +  and hollow +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
photosynthetic +
not aromatic +
coriaceous +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
membranous +
inconspicuous +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
complex +  and simple +
concealed +  and prominent +
pedicellate +
lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
40 cm400 mm <br />0.4 m <br /> (?) +  and 80 cm800 mm <br />0.8 m <br /> (?) +
dry +  and fleshy +
spreading;appressed +
6 cm60 mm <br />0.06 m <br /> (20 cm200 mm <br />0.2 m <br />) +
elongate +
stoloniferous +
pedicellate +  and sessile +
in triplets +  and paired +
straw-colored +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2 +, 1 +  and numerous +
compressed +
usually smaller +  and reduced +
0.7mm +  and 0.9mm +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Erianthus ravennae +
Saccharum ravennae +
Saccharum +
species +
membranous +
sessile-pedicellate +
awned +, muticous +, bidentate +  and entire +
not raised +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +