Rhynchospora harveyi
Rhynchospora stenophylla
Harvey's beaksedge
coastal plain beaksedge
erect to excurved, leafy, obscurely trigonous, slender.
lax, leafy toward base, 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.
ascending, exceeded by culm;
blades filiform, to 0.5 mm, margins mostly 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.
mostly lax cymes or clusters of cymes, 1–2, sparse, turbinate, branches capillary; leafy bracts setaceous, exceeding proximal cymes, shorter than, equaling or slightly exceeding distal cymes.
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, fusiformlanceoloid, 5 mm, apex acute;
fertile scales lanceolate, 3.5–4.5 mm, apex acute or acuminate, midrib included or shortexcurrent.
perianth bristles mostly 6, rarely reaching fruit midbody, antrorsely barbellate.
perianth bristles 6, exceeding tubercle base, antrorsely barbellate, basally setose.
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 per spikelet, 2.8–3 mm;
body pale brown, obovoidpyriform, tumidly lenticular, 1.5–1 × 1 mm;
surfaces transversely wavyrugose, intervals vertically striate with narrow, raised alveolae;
tubercle flat, narrowly triangular-subulate, (0.8–)1–1.5 mm.
Rhynchospora harveyi
Rhynchospora stenophylla
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Rhynchospora stenophylla may occasionally be confused with the closely related R. rariflora but can be distinguished by its taller and wispier habit, its longer spikelets of narrower outline, and the distinctly longer fruit tubercle. Both species are usually found on wet substrates; R. stenophylla typically is found in the deepest bogs and sphagnous seeps.
(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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