Coelorachis rugosa |
Coelorachis cylindrica |
|
---|---|---|
wrinkled jointgrass, wrinkled jointtail grass |
Carolina jointgrass, cylinder jointtail grass |
|
Habit | Plants cespitose. | Plants shortly rhizomatous. |
Culms | 60-120 cm, compressed-keeled. |
60-120 cm, terete. |
Sheaths | compressed-keeled; ligules 0.5-1 mm. |
terete; ligules 0.2-0.8 mm. |
Caryopses | about 2 mm, broadly ellipsoid. |
about 2.2 mm. |
Rames | 3-9.5 cm; rachises distinctly indented adjacent to the sessile spikelets. |
6.5-12.5 cm, often purple. |
Sessile | spikelets 3-4 mm; lower glumes transversely rugose; upper lemmas and paleas 2-3 mm. |
spikelets 5-5.5 mm; lower glumes with circular pits on the sides, the central region initially smooth, usually developing rectangular pits at maturity, occasionally remaining smooth; upper lemmas and paleas 4-4.5 mm. |
Pedicellate | spikelets 1-3 mm. |
spikelets 1-2 mm. |
2n | = unknown. |
= 18. |
Coelorachis rugosa |
Coelorachis cylindrica |
|
Distribution |
AL; AR; DE; FL; GA; LA; MD; MS; NC; NJ; SC; TX; VA
|
AL; AR; FL; GA; KS; LA; MO; MS; NC; OK; SC; TX
|
Discussion | Coelorachis rugosa is endemic to the southeastern United States. It grows in moist to wet areas in prairies, bogs, and pine woods, especially flatwoods and savannahs. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Coelorachis cylindrica is native to the southeastern United States, where it grows in tallgrass prairies, the edges of forests, and roadsides. The specimen from Michigan was found in an old field, in association with many native species. Its source is unknown. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 688. | FNA vol. 25, p. 688. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Andropogoneae > Coelorachis | Poaceae > subfam. Panicoideae > tribe Andropogoneae > Coelorachis |
Sibling taxa | ||
Synonyms | Mnesithsa rugosa, Manisuris rugosa | Mnesithsa cylindrica, Manisuris cylindrica |
Name authority | (Nutt.) Nash | (Michx.) Nash |
Web links |