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|1 Petals 5-14 mm long, white (rarely pinkish); calyx 3.2-6 mm long; fruits with long curved or hooked simple hairs along the sutures; seeds minutely hairy; [s. FL and s. TX southwards]|
|1 Petals 15-45 mm long, pink (rarely white); calyx 7-11 mm long; fruits lacking long curved or hooked simple hairs along the sutures; seeds glabrous; [collectively widespread along the coast of our area, and inland in FL and rarely other states].|
..2 Inflorescence branched; leaves hastate or lanceolate, .20 mm wide, unlobed or, if lobed, then lobes not reflexed; margin serrate or biserrate; [NY south to s. FL, west to e. and s. TX]
|..2 Inflorescence unbranched; leaves linear, 20 mm wide, lobed, lobes reflexed, linear, margin without serrations for proximal half of length of blade; [peninsular FL]|