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2 Perennial herbs; stipules of main stems dark brown, auriculate; capsules 1.7-1.9 mm in diameter; seeds 0.8-0.9 mm long; [subgenus Moeroris] | |
2 Annual herbs; stipules of main stems pale green to pale brown, not auriculate; capsules 1.9-2.7 mm in diameter; seeds 0.9-1.5 mm long. | |
3 Inflorescences near tips of branchlets of solitary pistillate flowers. | |
4 Pistillate nectaries deeply 6-9-lobed; styles ascending to erect; ultimate branchlets scabridulous; stems usually angled; leaf apices rounded; [subgenus Swartziani] | |
3 Inflorescences near tips of branchlets of 1 pistillate flower and 1-3 staminate flowers; [subgenus Swartziani]. | |
5 Pistillate nectary annular, 5-7-lobed; staminate sepals 5 (-6); capsules 1.9-2.1 mm in diameter; seeds 0.9-1 mm long | |
5 Pistillate nectary of 3 glands; staminate sepals 5-6 in flowers of basal cymules, 4 in flowers of distal cymules; capsules 2.3-2.7 mm in diameter; seeds 1.1-1.5 mm long. | |
6 Pistillate nectary glands subequal, reniform, broader than long; leaf blades densely scabridulous on both surfaces; bisexual cymules with 1-3 staminate flowers | |
6 Pistillate nectary glands strongly unequal, spatulate, as long as or longer than broad; leaf blades glabrous on both surfaces or sparsely to moderately scabridulous abaxially; bisexual cymules with 1 staminate flower. | |
7 Lower cymules with 2 staminate flowers, each with 2 stamens; stems scabridulous or smooth; [OK to TX, and westwards and southwards] | |
7 Lower cymules with 2 staminate flowers, one with 3 stamens and one with 2 stamens; stems smooth; [se. GA south to s. FL] |