Rhynchospora fascicularis |
Rhynchospora scirpoides |
|
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fascicled beaksedge |
long-beak beaksedge |
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Habit | Plants perennial, cespitose, 100–150 cm; rhizomes absent. | Plants annual, cespitose, (20–)30–80(–100) cm; rhizomes absent. |
Culms | erect to excurvedascending, narrowly linear to ± filiform, terete to obscurely trigonous, leafy, densely so toward base, stiff to rather lax. |
erect or ascending, leafy, nearly terete or obscurely angular, many-ribbed, stiff. |
Leaves | overtopped by culm; blades linear, ascending, proximally flat, 1–4 mm wide, apex trigonous, subulate, tapering gradually. |
exceeding or exceeded by inflorescences; blades linear, proximally flat, 1–5 mm wide, apex trigonous, tapering. |
Inflorescences | spikelet clusters 1–3(–4), proximal mostly widely spaced, dense, broadly turbinate to hemispheric, to 2 cm broad; leafy bracts subulate, exceeding proximal spikelets, slightly or not exceeding most distal clusters. |
terminal and axillary, clusters of corymbs 1–5, diffuse, branches ascending to divaricate; leafy bracts much exceeding axillary corymbs. |
Spikelets | redbrown, narrowly ovoid, (3–)3.5–5 mm, apex acute; fertile scales ovate, 3–3.5(–4) mm, apex acute, mostly with cusp or mucro 0.5–1 mm. |
redbrown to dark brown, ovoidlanceoloid, 3–6(–7) mm, apex acute; fertile scales several, narrowly ovate, 2.5–3.5 mm, apex narrowly acute; midrib included or shortexcurrent. |
Flowers | bristles 5–6, from rudimentary to reaching tubercle tip, or (rarely) beyond, antrorsely barbellate. |
perianth absent. |
Fruits | 1–3 per spikelet, (1.5–)2–2.2(–2.5) mm; body dark brown with pale center, lenticular, broadly ellipsoid to ± orbicular, (1.3–)1.5–1.7(–1.9) × 1–1.5 mm, margins pale, narrow or narrowly rounded, flowing to tubercle; surfaces dull, minutely longitudinally striate; tubercle compressed, triangular to triangularsubulate, 0.5–0.7(–0.9) mm. |
1.3–1.5 mm; body brown to blackish, tumidly lenticular, nearly orbicular, 0.6–1 × 0.6–1 mm, margins distinct, narrow, flowing into base of tubercle; tubercle flat, narrowly triangular, at least 0.5 mm high, base broadly 2-lobed, apex acuminate. |
Rhynchospora fascicularis |
Rhynchospora scirpoides |
|
Phenology | Fruiting late spring–fall or all year (south). | Fruiting summer–fall or all year (south). |
Habitat | Sands and peats of interdunal swales, depressions in savannas, open flatwoods, and seep-bog edges | Moist to wet sands or peats of banks of streams and ditches, pond and lakeshores, depressions in savannas, marshes, often in moist to wet disturbed areas |
Elevation | 0–100 m (0–300 ft) | 0–200 m (0–700 ft) |
Distribution |
AL; FL; GA; LA; MS; NC; SC; TX; VA; Central America; Bermuda
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AL; CT; DE; FL; GA; IN; LA; MA; MD; MI; MS; NC; NJ; NY; RI; SC; TX; VA; WI; West Indies
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Discussion | In her revision, S. Gale (1944) treated var. distans as the more slender version of the species, one with a smaller inflorescence, more distinctly margined fruit body, and consistently elongate perianth bristles. All those character states appear to vary independently over the total range of the species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 23, p. 239. | FNA vol. 23, p. 217. |
Parent taxa | Cyperaceae > Rhynchospora | Cyperaceae > Rhynchospora |
Sibling taxa | ||
Synonyms | Schoenus fascicularis, Dichromena distans, Phaeocephalum fasciculare, Phaeocephalum distans, R. distans, R. distans var. fascicularis, R. dommucensis, R. fascicularis var. distans, Schoenus distans | Psilocarya scirpoides |
Name authority | (Michaux) Vahl: Enum. Pl. 2: 234. (1805) | (Torrey) Grisebach: Cat. Pl. Cub., 247. (1866) |
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