Rhynchospora ciliaris |
Rhynchospora curtissii |
|
---|---|---|
fringe beaksedge |
Curtiss' beaksedge |
|
Habit | Plants perennial, cespitose, 30–90 cm; rhizomes absent. | Plants perennial, densely cespitose, 10–30 cm; rhizomes absent. |
Culms | erect or ascending, terete to obscurely trigonous, multiribbed, densely leafybased, slender, stiff, papillose to scabridpuberulent. |
lax, erect to excurved, leafy toward base, filiform. |
Leaves | forming strong rosette, distal widely spaced, much exceeded by scape; basal leaf blades shortlinear, flat, 4–6 mm wide, culm leaf blades narrower, longer, all ciliate, apex bluntly acute. |
overtopped by scape; blades filiform, distally flattened, channeled, tapering, to 1 mm wide, margins strongly involute, apex blunt. |
Inflorescences | terminal; spikelet cluster 1, crowded, hemispheric, often lobed, to 2 cm wide; bracts strongly ciliate distally; longer leafy bracts exceeding cluster. |
spikelet clusters 1–3, laterals widely spaced, all narrowly turbinate, ellipsoid, or ovoid; leafy bracts setaceous, overtopping proximal clusters, often overtopped by terminal ones. |
Spikelets | dark redbrown, ovoid, 4–5(–6) mm, apex acute; fertile scales broadly ovate, 4–4.5 mm, apex blunt, sometimes apiculate or with mucro to 1 mm, midrib scabrid. |
erect or ascending, redbrown, lanciform, mostly 4.5–5 mm, apex acute; fertile scales lanceolate, (3–)4–4.5 mm, apex acute, apiculate. |
Flowers | bristles 6, some vestigial, none reaching past fruit midbody, antrorsely barbellate. |
perianth absent. |
Fruits | 1–2 per spikelet, (1.9–)2–2.5 mm; body dark brown with paler center, lenticular, broadly ellipsoid to orbicular, 1.6–2 × 1.5–1.6 mm, margins flowing to tubercle; tubercle lowtriangular, 0.5 mm, often apiculate. |
2–3(–5) per spikelet; stipe and receptacle 0.1–0.2(–0.3) mm, setose; body brown with pale glassy center, narrowly obovoidellipsoid, lenticular, 1.2–1.5 mm, margins narrow, flowing to tubercle; surfaces very finely lined longitudinally, transversely with wavy lines of tiny pits; tubercle narrowly triangular or slightly concavesided, flattened, 0.7–1.2(–1.5) mm. |
Rhynchospora ciliaris |
Rhynchospora curtissii |
|
Phenology | Fruiting late spring–fall. | Fruiting summer–fall. |
Habitat | Sands and peats in bogs, seeps, depressions in savannas, and low open pinelands | Sands and peats of bogs, pineland pond shores, seeps, and low moist savannas |
Elevation | 0–100 m (0–300 ft) | 0–100 m (0–300 ft) |
Distribution |
AL; FL; GA; LA; MS; NC; SC
|
AL; FL; MS |
Source | FNA vol. 23, p. 237. | FNA vol. 23, p. 234. |
Parent taxa | Cyperaceae > Rhynchospora | Cyperaceae > Rhynchospora |
Sibling taxa | ||
Synonyms | Schoenus ciliaris, Phaeocephalum ciliatum, R. ciliata, R. rappiana | Phaeocephalum curtissii, R. filifolia var. ellipsoidea |
Name authority | (Michaux) C. Mohr: Contr. U.S. Natl. Herb. 6: 408. (1901) | Britton: in J. K. Small, Fl. S.E. U.S., 195, 1327. (1903) |
Web links |