Coelorachis tuberculosa

(Nash) Nash
Common names: Smooth jointgrass
Synonyms: Manisuris tuberculosa
Treatment appears in FNA Volume 25. Treatment on page 688.

Plants cespitose. Culms 60-120 cm, compressed-keeled. Sheaths compressed-keeled, glabrous; blades to 31 cm long, to 7.8 mm wide, folded or flat, glabrous. Rames 4-8 cm; rachises not or only slightly indented adjacent to the sessile spikelets. Sessile spikelets 3.3-4.3 mm long, 1.3-2 mm wide; lower glumes smooth or sparsely and shallowly transversely rugose, keels narrowly winged. Pedicellate spikelets 1.9-2.6 mm, reduced to scales. 2n = unknown.


Coelorachis tuberculosa is an uncommon species, endemic to the southeastern United States. It grows in moist to wet areas such as bogs and pine woods, especially flatwoods and savannahs.

Selected References


Lower Taxa