Difference between revisions of "Rhynchospora colorata"
Repert. Spec. Nov. Regni Veg. 38: 89. 1935.
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| − | |name= | + | |name=Dichromena drummondiana |
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| − | |synonyms=Dichromena cephalotes;Dichromena colorata;Dichromena leucocephala; | + | |synonyms=Dichromena cephalotes;Dichromena colorata;Dichromena leucocephala;Dichromena drummondiana |
| − | |basionyms=Schoenus coloratus | + | |basionyms=Schoenus coloratus |
|family=Cyperaceae | |family=Cyperaceae | ||
|phenology=Fruiting late spring–summer. | |phenology=Fruiting late spring–summer. | ||
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|publication title=Repert. Spec. Nov. Regni Veg. | |publication title=Repert. Spec. Nov. Regni Veg. | ||
|publication year=1935 | |publication year=1935 | ||
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| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_371.xml |
|genus=Rhynchospora | |genus=Rhynchospora | ||
|species=Rhynchospora colorata | |species=Rhynchospora colorata | ||
Latest revision as of 14:09, 18 March 2024
Illustrator:
Copyright:
Plants perennial, cespitose or solitary, to 70 cm; rhizomes slender, scaly, to 2 mm thick. Culms erect, slender, leafy-based, trigonous, several-ribbed. Leaves spreading to erect, overtopped by culm; blades narrowly linear, proximally flattened, 0.5–3 mm wide, apex tapering, trigonous. Inflorescences terminal, solitary, headlike, dense, white, leafy-involucrate; involucral bracts several, flaring to recurved, white from broadened base nearly to median, then green to tapered tip, longer bracts 13 cm × 2–7 mm. Spikelets white, ovoid, 5–7 mm, apex acute; fertile scales many, boatshaped, sharply curvedkeeled, 3–4(–5) mm, apex acute or blunt. Flowers: perianth absent. Fruits several per spikelet, 1.5–1.7(–2) mm; body yellow to mahogany, broadly pyriformobovoid, tumidly lenticular, 1 × 0.5–0.7 mm, widest at apex, margins thickened, interrupted at base of tubercle; surfaces transversely undulaterugose, ridges contiguous, of shortlinear papillae; tubercle broadly triangular, 0.5–0.6 mm, graycrustaceous, apex short acuminate. 2n = 12.
Phenology: Fruiting late spring–summer.
Habitat: Sands, peats, and silt of interdunal swales, shores, meadowy swales, and marsh edges, sometimes fens, usually on circumneutral or basic substrates
Elevation: 0–300 m
Distribution
Ala., Ark., Fla., Ga., La., Miss., N.C., S.C., Tex., Va., Mexico, West Indies, Central America, South America (French Guiana).
Discussion
Rhynchospora colorata is a slender and clonal version of R. latifolia, with a distinct preference for more basic substrates; involucral bracts are very slender and have a longer portion of green, usually reaching well proximal to midbract.
See also 16. Rhynchospora latifolia.
Selected References
None.