Rhynchospora harveyi
Rhynchospora gracilenta
Harvey's beaksedge
slender beaksedge
erect to excurved, leafy, obscurely trigonous, slender.
mostly lax, ascending to leaningexcurved, leafy, linear to filiform, terete.
spreading to ascending, shorter than culm, crowded toward culm base;
blades linear, proximally flat, 1–3 mm wide, gradually involute, apically trigonous, subulate.
shorter than culm;
blades ascending, filiform to narrowly linear, proximally flat, 0.5–1.5(–2.5) mm wide, margins distally strongly involute, apex trigonous, tapering.
spikelet clusters 1–4, dense to open, mostly irregularly turbinate;
peduncles ascending, branches spreading to erect, ultimate branches with many spikelets; leafy bracts setaceoustipped, usually exceeding all clusters, or at least all but the distal.
spikelet clusters 1–3(–4), proximalmost distant, dense to sparse, narrowly turbinate to hemispheric;
peduncles and branches ascending; leafy bracts linearsetaceous, mostly overtopping clusters.
light redbrown or brown, broadly ellipsoid to lanceoloid, 3–4 mm, apex acute to acuminate;
fertile scales ovate to obovate or suborbiculate, 2–3.5 mm apex acute to rounded or emarginate, midrib included or exserted as mucro.
redbrown, ovoid to lanceoloid, (3.5–)4–5 mm, apex acute;
fertile scales ovate, 3–4.5 mm, apex acute, mucronate to awnedcuspidate.
perianth bristles mostly 6, rarely reaching fruit midbody, antrorsely barbellate.
bristles 6, mostly reaching tip of tubercle or beyond, antrorsely barbellate.
mostly 1 per spikelet, 2–2.5 mm, body dark brown, obovoid to subglobose, tumid or lenticular, 1.5–1.7 mm, transversely finely rugose to nearly level, intervals with very small, pitlike alveoli.
1–3 per spikelet, (2.5–)3–3.5(–4.1) mm;
body dark brown with small pale center, lenticular, broadly ellipsoid to suborbicular, 1.3–2.1 × 1.3–1.5 mm, smooth, margins narrow, flowing into tubercle;
tubercle triangular-subulate, compressed, mostly 1.5–2 mm.
Rhynchospora harveyi
Rhynchospora gracilenta
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Through the southern coastal plain are widerleaved examples of Rhynchospora gracilenta that are sparingly cespitose to solitary-stemmed, often with but a single terminal inflorescence with dense clusters of spikelets (var. diversifolia). That would be a tenable designation were it not for the large numbers of populations with intermediate habit.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Fruit body broadly obovoid to suborbicular, medially with mostly isodiametric tiny alveoli or pits, or minutely raised reticulate in an almost honeycomb pattern of alveolae, or simply evenly finely cancellate; ultimate spikelet complexes with clusters on stiffish branchlets, usually dense and exceeded at least by subulate tips of subtending leafy bract and bractlets. | var. harveyi |
1. Fruit body obovoid, lenticular, medially with oblong or roundish pitlike alveoli, intervals between contiguous transverse rows forming shallow, broad, pale, smooth ridges; ultimate spikelet clusters more sparse, on more slender, lax, erect to excurved branches and exceeding subtending bracts and bractlets. | var. culixa |
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