All Floras      Advanced Search
FNA Vol. 23 Page 205, 225, 226, 227 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 23 | Cyperaceae | Rhynchospora

45. Rhynchospora globularis (Chapman) Small, Man. S.E. Fl. 184. 1933 (as Rynchospora).

Rhynchospora cymosa Elliott var. globularis Chapman, Fl. South. U.S., 525. 1860

Plants perennial, cespitose or single, 30–70(–80) cm; rhizomes absent. Culms erect or excurved, lax, leafy, slender to wiry. Leaves overtopped by culm; basal leaves spreading, twisted, distal longer, erect or ascending; blades proximally flat, 1–3 mm wide, apex trigonous, subulate, tapering. Inflorescences: spikelet clusters 1–4, proximalmost widely spaced, spikelets elongate, open, turbinate or compact lobed hemispheric; branches erect to ascending; leafy bracts setaceous, exceeding proximal clusters, exceeded by distal clusters. Spikelets mostly dark brown to brown, globose to broadly ovoid, (2–)2.5–3(–4) mm, apex acute; fertile scales broadly ovate to orbiculate, 1.7–2.3 mm, apex obtuse to rounded or emarginate, midrib mostly included, sometimes excurrent as apiculus. Flowers: perianth bristles 6 or less, antrorsely barbellate, of various lengths. Fruits 1–3 per spikelet, 1.5–1–8 mm (–2 mm in var. pinetorum); body tumidly biconvex; surfaces transversely wavy rugose, intervals of vertically rectangular alveolae or transverse rugosity indistinct, surface isodiametrically alveolate or cancellate; tubercle short conic to patelliform apiculate.

Varieties 3 (3 in the flora): United States, West Indies, Central America.

1 Spikelets ovoid; fruit body scarcely transversely wavy rugose, instead with transverse, undulate rows of subisodiametric to very broadly rectangular lattices or alveolae.   45b var. pinetorum
+ Spikelets broadly ovoid to subglobose; fruit body distinctly transversely wavy-rugose, intervals composed of irregular rows of vertical, rectangular alveolae.   (2)
2 (1) Perianth bristles not extending much beyond fruit midbody; tubercle low conic, distinctly narrower than rounded summit of fruit body.   45a var. globularis
+ Perianth bristles extending at least to fruit tubercle, sometimes to tip; tubercle depressed conic or patelliform, apiculate, nearly as broad as more truncate summit of fruit body.   45c var. saxicola

Lower Taxa


Related Objects  
  • Distribution Map
  • Map

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |