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Florida beaksedge

Habit Plants perennial or annual, single or cespitose, (10–)20–50 cm; rhizomes absent.
Culms

spreading to erect, leafy, obtusely triangular.

Leaves

often exceeding inflorescences;

blades narrowly linear, proximally flat, 1–3 mm wide, apex trigonous, tapering.

Inflorescences

terminal and axillary, clusters of 1–5 corymbs; leafy bracts much exceeding corymbs.

Spikelets

few to several, on ascending, stiff, short-to-elongate branches, red-brown to brown, lanceoloid, (5–)6–10 mm, apex acuminate;

fertile scales many, ovate, shallowly convex, 5 mm, apex acuminate;

midrib short-excurrent or not.

Flowers

perianth absent.

Fruits

1.5 mm;

body dark brown to black, tumidly lenticular, nearly orbicular, 0.8–0.9 × 0.6–0.7 mm, margins grooved, discontinuous with tubercle;

surfaces transversely wavyrugose, ridges of contiguous rows of vertical, linear, raised cells;

tubercle broad, low triangular, 0.2–0.3 mm, crustaceous, base capping fruit summit, raised at ends, apex shortacuminate.

Rhynchospora eximia

Phenology Fruiting all year.
Habitat Moist to wet sandy peaty swales, pond shores, depressions in savannas, moist waste areas
Elevation 0–100[–1000] m (0–300[–3300] ft)
Distribution
from FNA
FL; Mexico; Central America; South America; West Indies; Africa
[BONAP county map]
Discussion

Rhynchospora eximia is often found at elevations from near sea level to over 1000 m in the tropics.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 23, p. 216.
Parent taxa Cyperaceae > Rhynchospora
Sibling taxa
R. alba, R. baldwinii, R. brachychaeta, R. breviseta, R. caduca, R. californica, R. capillacea, R. capitellata, R. careyana, R. cephalantha, R. chalarocephala, R. chapmanii, R. ciliaris, R. colorata, R. compressa, R. corniculata, R. crinipes, R. curtissii, R. debilis, R. decurrens, R. divergens, R. elliottii, R. fascicularis, R. fernaldii, R. filifolia, R. floridensis, R. fusca, R. globularis, R. glomerata, R. gracilenta, R. grayi, R. harperi, R. harveyi, R. indianolensis, R. inexpansa, R. inundata, R. knieskernii, R. kunthii, R. latifolia, R. macra, R. macrostachya, R. megalocarpa, R. megaplumosa, R. microcarpa, R. microcephala, R. miliacea, R. mixta, R. nitens, R. nivea, R. odorata, R. oligantha, R. pallida, R. perplexa, R. pineticola, R. pleiantha, R. plumosa, R. punctata, R. pusilla, R. rariflora, R. recognita, R. scirpoides, R. solitaria, R. stenophylla, R. thornei, R. torreyana, R. tracyi, R. wrightiana
Synonyms Spermodon eximius, Psilocarya schiedeana, R. oxycephala, R. psilocaroides
Name authority (Nees) Boeckeler: Linnaea 37: 601. (1873)
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