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Tracy's beaksedge

Habit Plants perennial, clonal, to 120 cm; rhizomes scaly, slender, less than 2 mm thick.
Culms

erect, leafybased, wandlike, nearly terete, multiribbed.

Leaves

ascending or erect, longest nearly equaling culm;

principal blades linear, involutecylindric, to 3 mm wide, apex tapering, subulate.

Inflorescences

terminal, heads 1–4, dense, macelike, 1–1.5 mm thick;

involucral bracts leafy, proximalmost overtopping inflorescence.

Spikelets

greenish, lanceovoid, 5–6 mm, apex acuminate;

fertile scales boat-shaped, 5 mm, apex acute to shortacuminate, midrib slightly excurrent or not.

Flowers

perianth bristles 6, exceeding fruit body, antrorsely barbellate.

Fruits

1 per spikelet, 6–8(–8.7) mm;

body pale greenbrown, laterally compressed, obcordiform, 2.5–3(–4) mm, margins thick, rounded, not crimped, apex barely exserted, setulose, surfaces nearly plane, minutely cancellate (latticed);

tubercle (style base) linear, angled, 4–6 mm, much narrower than fruit summit, setulose.

Rhynchospora tracyi

Phenology Fruiting late spring–fall.
Habitat Emergent in shallows of cypress domes, marshes and swales, ditches and ponds
Elevation 0–100 m (0–300 ft)
Distribution
from FNA
AL; FL; GA; LA; MS; NC; SC; TX; West Indies; Central America (Belize)
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[BONAP county map]
Discussion

Rhynchospora tracyi frequently forms clones extending for acres by means of its long slender rhizomes. Its wandlike, terete, supple culms, and round-capitate clusters of spikelets suggest a rush more than a sedge.

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

Source FNA vol. 23, p. 207.
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. eximia, 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. wrightiana
Synonyms Ceratoschoenus capitatus, Phaeocephalum tracyi, Schoenus triceps
Name authority Britton: Trans. New York Acad. Sci. 11: 84. (1892)
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