Rhynchospora rariflora

(Michaux) Elliott

Sketch Bot. S. Carolina 1: 58. 1816.

Basionym: Schoenus rariflorus Michaux Fl. Bor.-Amer. 1: 35. 1803
Synonyms: Phaeocephalum rariflorum (Michaux) House
Treatment appears in FNA Volume 23. Treatment on page 221. Mentioned on page 201, 204, 220, 222.
Please click on the illustration for a higher resolution version.


Plants perennial, densely cespitose, 15–60 cm; rhizomes compact, branching, slender. Culms lax,filiform, leafy, terete, grooved. leaves ascending to erect, exceeded by culm, blades lax, filiform, margins proximally deeply involute, apex trigonous, tapering. Inflorescences mostly cymose clusters, simple or compound, 1–3(–4), widely spaced, loose, narrowly to broadly turbinate;, branchies capillary, ascending to spreading, leafy bracts setaceous, exceeded by or exceeding cymes. Spikelets light redbrown or brown, lanceovoid to fusiform, 3–4(–4.5) mm, apex acuminate, fertile scales ovate, mostly 2–3 mm, apex rounded to acute, midrib included or shortexcurrent. Flowers: perianth bristles mostly 6, unequal, rarely extending past fruit midbody, antrorsely barbellate. Fruits 1–4 per spikelet, 1.8–2 mm, body yellowbrown to brown, lustrous, tumidly obovoidlenticular, 1–1.5 × 1–1.5 mm, surfaces transversely wavyrugose, intervals vertically striate with narrow alveolae, tubercle flat, triangular, 0.3–0.6 mm.

Phenology: Fruiting spring–summer or all year (south).
Habitat: Sands or peats of low savannas, seeps, bogs, flatwoods, pond shores, stream banks
Elevation: 0–400 m


V23 386-distribution-map.jpg

Ala., Ark., Fla., Ga., La., Md., Miss., N.J., N.C., Okla., S.C., Tenn., Tex., Va., Mexico, West Indies, Central America.


Rhynchospora rariflora forms solid tussocks by means of short, forking, compact masses of rhizomes.

Selected References


Lower Taxa

... more about "Rhynchospora rariflora"
Robert Kral +
(Michaux) Elliott +
Schoenus rariflorus +
Ala. +, Ark. +, Fla. +, Ga. +, La. +, Md. +, Miss. +, N.J. +, N.C. +, Okla. +, S.C. +, Tenn. +, Tex. +, Va. +, Mexico +, West Indies +  and Central America. +
0–400 m +
Sands or peats of low savannas, seeps, bogs, flatwoods, pond shores, stream banks +
Fruiting spring–summer or all year (south). +
Sketch Bot. S. Carolina +
Illustrated +
Phaeocephalum rariflorum +
Rhynchospora rariflora +
Rhynchospora +
species +