Rhynchospora fascicularis |
Rhynchospora odorata |
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fascicled beaksedge |
fragrant beaksedge |
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Habit | Plants perennial, cespitose, 100–150 cm; rhizomes absent. | Plants perennial, cespitose, 100–180 cm; rhizomes often present, short, scaly. |
Culms | erect to excurvedascending, narrowly linear to ± filiform, terete to obscurely trigonous, leafy, densely so toward base, stiff to rather lax. |
erect to ascending, leafy, slender, angular. |
Leaves | overtopped by culm; blades linear, ascending, proximally flat, 1–4 mm wide, apex trigonous, subulate, tapering gradually. |
exceeded by culm; blades linear, proximally flat, 3–6 mm wide, apex tapering, trigonous, subulate. |
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. |
of terminal and axillary clusters, 3–5, proximalmost widely spaced, turbinate or lobed, fascicles dense, branches ascending; leafy bracts exceeding all but proximalmost clusters. |
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. |
rich redbrown, ovoid, (4–)5–6(–7) mm, apex acuminate; fertile scales ovate, (3.5–)4–5 mm, apex acuminate, midrib short or longexcurrent. |
Flowers | bristles 5–6, from rudimentary to reaching tubercle tip, or (rarely) beyond, antrorsely barbellate. |
perianth bristles 6, reaching past tubercle, antrorsely barbellate. |
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. |
mostly 3–4(–7) per spikelet, 3 mm with pedicellar joint and tubercle; body pale yellowbrown, obovoidlenticular, 1.4–1.7 × 1.4 × 1.5; surfaces transversely finely wavyrugulose, intervals vertically rectangularalveolate; pedicellar joint 0.3–0.6 mm; tubercle compressed, triangularacuminate, 0.5–0.6 (–1) mm, margin setulose. |
Rhynchospora fascicularis |
Rhynchospora odorata |
|
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 | Sands and peats of swamps, marshes, interdunal swales, low meadows, savannas |
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; FL; GA; NC; SC; West Indies (Bahamas, Cuba, Dominican Republic, Jamaica)
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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.) |
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Source | FNA vol. 23, p. 239. | FNA vol. 23, p. 223. |
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 | Phaeocephalum stipitatum, R. stipitata |
Name authority | (Michaux) Vahl: Enum. Pl. 2: 234. (1805) | C. Wright ex Grisebach: Cat. Pl. Cub., 242. (1866) |
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