Rhynchospora globularis var. saxicola
Rhynchospora globularis var. pinetorum
stone mountain beaksedge
globe beaksedge
stiff, slender.
arching, stiff or lax, slender.
broadly ovoid.
dark to pale brown, broadly ovoid to ovoidlanceoloid, mostly 2–2.5 mm.
perianth bristles reaching at least to tubercle base, often slightly beyond tip.
perianth bristles rarely reach 2/3 length of fruit body.
body distinctly transversely wavyrugose, with intervals of fine or coarse rectangular alveolae;
tubercle depressedconic or patelliform, nearly covering apex of truncate summit of fruit body, apex apiculate.
body indistinctly crossridged, reticulate with broad, often isodiametric alveolae or lattices;
tubercle depressed-conic to patelliform, apiculate, nearly as broad as truncate summit of fruit body.
Rhynchospora globularis var. saxicola
Rhynchospora globularis var. pinetorum
Rhynchospora globularis var. pinetorum frequently shares habitat with var. globularis in Georgia and northern Florida and, apart from a slightly taller and stiffer habit, and slightly longer and (sometimes) paler spikelets, var. pinetorum looks like var. globularis in the field. An inspection of fruit reveals significant differences. Of similar length, shape, and thickness, the fruit body of var. pinetorum has a distinct, shallow surface network of subisodiametric lattices nearly level with frame, or alveolae more sunken and frame more raised. While the tubercle of most plants of var. globularis is evenly conic, the slightly longer tubercle of those in var. pinetorum is concavesided and sharpertipped.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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