Rhynchospora chapmanii

M. A. Curtis

Amer. J. Sci. Arts, ser. 2, 7: 409. 1849

Synonyms: Phaeocephalum chapmanii (M. A. Curtis) House
Treatment appears in FNA Volume 23. Treatment on page 234. Mentioned on page 206, 235.
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Plants perennial, densely cespitose, 30–50(–70) cm; rhizomes absent. Culms erect to excurved, filiform, leafy, stiff to lax. Leaves mostly slightly exceeded by culm; blades ± filiform, proximally flat to concave, distally tapering, to 1 mm wide, margins involute, apex trigonous, subulate. Inflorescences terminal; spikelet clusters 1(–2), dense, broadly turbinate to hemispheric; longer leafy bracts 1–2(–several), setaceous, overtopping inflorescence. Spikelets light brown, narrowly ovoid, 2–2.5(–3) mm, apex acute or acuminate; fertile scales 1.5–2(–2.5) mm, apex acute, midrib excurrent as cusp or awn 0.5–0.9 mm. Flowers: bristles absent, rarely reduced to nubbins, or rarely 1, then shorter than fruit body. Fruits 1 per spikelet, 1–1.8 mm; body with dark brown ends, broad pale midzone, lenticular, ± orbicular, 1–1.2 × 0.8–1 mm, surfaces smooth; margins sharp, flowing to tubercle; tubercle lowtriangular, 0.2–0.3(–0.5) mm, sometimes apiculate.

Phenology: Fruiting summer–fall; 0–200 m; Ala.


V23 417-distribution-map.jpg

Fla., Ga., La., Miss., N.C., S.C.


Rhynchospora chapmanii is a frequent invader of logged or otherwise disturbed pine savannas, often an aspect dominant. Its pale inflorescences are conspicuous masses in autumn.

Selected References


Lower Taxa


... more about "Rhynchospora chapmanii"
Robert Kral +
M. A. Curtis +
Fla. +, Ga. +, La. +, Miss. +, N.C. +  and S.C. +
Fruiting summer–fall +, 0–200 m +  and Ala. +
Amer. J. Sci. Arts, ser. +
Phaeocephalum chapmanii +
Rhynchospora chapmanii +
Rhynchospora +
species +