Rhynchospora globularis var. saxicola
Rhynchospora globularis var. globularis
stone mountain beaksedge
globe beaksedge
stiff, slender.
broadly ovoid.
dark brown, nearly globose to ovoid, mostly 2 mm.
perianth bristles reaching at least to tubercle base, often slightly beyond tip.
perianth bristles rarely extending past fruit midbody.
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 distinctly transversely wavyrugose, intervals of fine or coarse, vertically rectangular alveolae;
tubercle low-conic, distinctly narrower than rounded summit of fruit body.
Rhynchospora globularis var. saxicola
Rhynchospora globularis var. globularis
Rhynchospora globularis var. globularis is the most common of the three varieties sharing habitat, particularly disturbed ones, over much of its range with the similarly ubiquitous R. recognita. The differences between the two, once considered co-variants, are striking. Rhynschospora globularis var. globularis shows slender, mostly radiately spreadingascending, lax, comparatively shortleaved culms; its sparser, less leafybracteate clusters have smaller, rounder, darker spikelets. Associated R. recognita is obviously taller, stouter, stiffer, and longer-leaved; its dense spikelet clusters are bristly with exserted-tipped subulate bracts; its spikelets are longer in narrower outline; and it is distinctively red-brown, almost orangebrown.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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