Chasmanthium nitidum

(Baldwin) H. O. Yates
Common names: Shiny chasmanthium
Endemic
Synonyms: Uniola nitida
Treatment appears in FNA Volume 25. Treatment on page 345.

Culms 40-120 cm, to 1 mm thick at the nodes, rarely branched, leafy for 80% of their height. Sheaths glabrous; collars glabrous; ligules 0.2-0.3 mm, entire; blades 9-16 (33) cm long, 4-7 mm wide, lanceolate-fusiform, glabrous adaxially. Panicles (9) 12-17 (29) cm, open, erect; branches ascending to divergent; axils of panicle branches scabrous; pedicels 0.5-2 mm. Spikelets 12-24 mm long, (8) 9-12 (15) mm wide, with (5) 7-9 (11) florets, lower (0) 1 (2) florets sterile, fertile florets diverging to 45°. Lower glumes 3.1-5 mm, 7-9-veined; upper glumes 3-4.6 mm, (5) 7-9-veined; calluses glabrous; fertile lemmas 5.5-8.5 mm, straight, 9-11-veined, keels not winged, scabridulous toward the apices; paleas 5-7.5 mm; anthers 1.9-2.4 mm, the length invariant within a spikelet. Caryopses 2.4-3 mm, enclosed at maturity. 2n = 24.

Distribution

S.C., N.C., Fla., Ala., Ga.

Discussion

Chasmanthium nitidum grows along stream and river banks, roadside ditches, and the margins of low, moist woods in the southeastern United States.

Selected References

None.

Lower Taxa

None.

"leafy" is not a number."decumbent" is not a number.

... more about "Chasmanthium nitidum"
0.19 cm1.9 mm <br />0.0019 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
Acuminate (?) +  and Acute (?) +
J. Gabriel Sanchez-Ken +  and Lynn G. Clark +
(Baldwin) H. O. Yates +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not pseudopetiolate +
9 cm90 mm <br />0.09 m <br /> (16 cm160 mm <br />0.16 m <br />) +
lanceolate-fusiform +
4mm;7mm +
spikelike +
brown +  and reddish-black or black +
compressed +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
fusoidlike +
Shiny chasmanthium +
ascending +  and erect +
40 cm400 mm <br />0.4 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
not woody +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
S.C. +, N.C. +, Fla. +, Ala. +  and Ga. +
less +  and 1/3 +
large +  and small +
capillary +
pistillate +  and staminate +
sometimes longer +
basal +  and distal +
rudimentary +
7 +  and 9 +
fertile +  and sterile +
round +  and compressed +
reduced +
(2)3-9-veined +
subtending +
acute +  and acuminate +
subequal +
membranous +
uncinate +
subbasal +  and basal +
hollow +  and solid +
scabridulous +
straight +
compressed-keeled +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
membranous +
inconspicuous +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +  and gibbous +
0.5 cm5 mm <br />0.005 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
9 cm90 mm <br />0.09 m <br /> (?) +
12 cm120 mm <br />0.12 m <br /> (17 cm170 mm <br />0.17 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
dry +  and fleshy +
staminate +, pistillate +, subsessile +, pedicellate +  and solitary +
1.2 cm12 mm <br />0.012 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
1 +  and 60 +
compressed +
0.4 cm4 mm <br />0.004 m <br /> (5 cm50 mm <br />0.05 m <br />) +
9mm +  and 12mm +
free +  and fused +
triangular +  and dome--shaped +
Uniola nitida +
Chasmanthium nitidum +
Chasmanthium +
species +
membranous +
0.3 cm3 mm <br />0.003 m <br /> (0.46 cm4.6 mm <br />0.0046 m <br />) +
plant +, colonial +  and cespitose +
aquatic +  and terrestrial +
pilose +, scabrous +  and glabrous +