Rhynchospora harveyi
Rhynchospora microcarpa
Harvey's beaksedge
southern beaksedge
erect to excurved, leafy, obscurely trigonous, slender.
erect to ascending, arching, lax, leafy, slender, trigonous.
spreading to ascending, shorter than culm, crowded toward culm base;
blades linear, proximally flat, 1–3 mm wide, gradually involute, apically trigonous, subulate.
exceeded by inflorescence;
blades ascending to spreading, linear, proximally flat, 1–2(–3) mm wide, apex trigonous, subulate, 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 4–6, mostly dense, widely spaced, narrowly turbinate to ellipsoid;
peduncles erect to ascending, branches ascending; leafy bracts exceeding proximal 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.
dark brown, ovoid, 2–3 mm, apex acute;
fertile scales broadly ovate to ± orbiculate, cupulate, 1.5–2 mm, apex rounded to acute, midrib included or excurrent as bristle.
perianth bristles mostly 6, rarely reaching fruit midbody, antrorsely barbellate.
perianth bristles 6, from vestigial to (rarely) reaching tubercle tip, 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.
2–3 per spikelet, 1.2–1.5 mm;
body brown, obovoid to globose, lenticular, 1–1.2 × 0.8–1 mm, margins narrow, distinct;
surfaces sharply transversely wavyrugose, intervals with rows of vertical, broadly rectangular or ± isodiametric alveolae;
tubercle lowtriangular or triangular, compressed, 0.2–0.3 mm, base lunate.
Rhynchospora harveyi
Rhynchospora microcarpa
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Through much of the range of Rhynchospora microcarpa, particularly in limesink or claybased pond areas, is a somewhat shorter series of plants with narrow leaves, tumid fruit 0.7–0.9 mm, often with isodiametric alveolae and depressedtriangular tubercles. Described by S. Gale as R. sulcata, the plants grade into the more typical morphology for R. microcarpa. In peninsular Florida, apparent intergradation with R. elliottii produces some individuals with broad leaves and triangularsubulate tubercles on nearly flat fruits.
(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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