1	Apical hairs of receptacular bracts and perianth white, mealy, opaque; heads pale gray to white; scapes hairy (except for glabrous-scaped, s Florida extreme of Lachnocaulon anceps).		(2)
+	Apical hairs of bracts and perianth translucent, not white, the brown color of bract and perianth showing through; heads brown or gray-brown; scapes glabrous or with ascending hairs.		(3)
2 (1)	Leaves narrowly linear, abruptly attenuate; mature heads seldom wider than 4 mm, dull gray-brown or pale gray; scapes glabrous or nearly so distally; seeds dark red-brown, very lustrous, longitudinal ribs faint, transverse ribs forming finely cross-striolate pattern		1 Lachnocaulon beyrichianum
+	Leaves linear, gradually attentuate; mature heads seldom as narrow as 4 mm, whitish to pale gray; scapes pilose from base to apex; seeds pale to dark brown, not lustrous, longitudinal ribs conspicuous, transverse ribs less conspicuous than longitudinal ribs, but coarser than in Lachnocaulon beyrichianum		2 Lachnocaulon anceps
3 (1)	Scapes with ascending hairs; heads dull gray-brown; hairs of receptacle copious, partly obscuring flowers (old heads may lose some hairs); gynoecium 3-carpellate		3 Lachnocaulon minus
+	Scapes glabrous; heads either chocolate brown or dull brown, if dull brown, with sepals of pistillate flowers yellow-white, hardly obscured by receptacular hairs; gynoecium 2--3-carpellate.		(4)
4 (3)	Heads dark brown or reddish brown, usually short cylindric by seeding time; gynoecium 3-carpellate; leaves 2--4 cm; scape sheaths shorter than or as long as leaves		4 Lachnocaulon engleri
+	Heads gray or gray-brown, usually globose by seeding time; gynoecium 2-carpellate; leaves 0.5--2 cm, scape sheaths longer than or at least rising above leaves		5 Lachnocaulon digynum