1	"Tack-like glands of peduncle bracts (0)1, terminal; central ray lobe generally << laterals, widest at base"	2
1	"Tack-like glands of peduncle bracts generally 2--6+, terminal and/or scattered; central ray lobe <= laterals, generally widest near or beyond middle"	6
2	"Corolla yellow; ray fruit generally rough-wrinkled"	3
2	"Corolla generally white, occasionally aging +- red; ray fruit generally smooth"	4
3	"Plant 1--5 dm, +- slender; ray 2--2.5(3.5) mm; disk flower 1--3"	"Calycadenia micrantha"
3	"Plant 2--12 dm, occasionally robust; ray (4)5--12 mm; disk flower 3--25"	"Calycadenia truncata"
4	"Branchlets generally many, thread-like, very flexible, ray flower (0)1(2); disk flower 1--2; ray fruit +- glabrous"	"Calycadenia hooveri"
4	"Branchlets, if present, coarser, +- rigid, ray flower 1--5; disk flower 4--15; ray fruit +- densely appressed-hairy"	5
5	"Tack-like glands of phyllaries and paleae generally many, variable in size; disk flower corolla 7--10 mm"	"Calycadenia spicata"
5	"Tack-like glands generally 0 on phyllaries and paleae; disk flower corolla 5--6 mm"	"Calycadenia villosa"
6	"Peduncle bracts +- widely oblanceolate, central channel +- not narrowed at tip, tip +- widely rounded, tack-like glands marginal, +- uniform in size; phyllaries and paleae generally without tack-like glands"	"Calycadenia mollis"
6	"Peduncle bracts +- linear or elliptic to lanceolate or club-like, central channel narrowed or 0 distally, tip acute, rounded, or truncate, tack-like glands variable in size and position; phyllaries and paleae often with tack-like glands"	7
7	"Central lobe of ray widest at base, << and narrower than laterals"	"Calycadenia multiglandulosa"
7	"Central lobe of ray widest near or beyond middle, +- similar to laterals"	8
8	"Leaves all opposite; heads in congested, axillary and terminal clusters, appearing whorled"	"Calycadenia oppositifolia"
8	"Leaves generally alternate; heads 1 or clustered in axils, in spike-like or diffusely branched clusters, not appearing whorled"	9
9	"Stem generally simple or few-branched, +- rigid, main axis generally obvious; paleae (3)4--6+, receptacle cup +- bell-shaped, length +- = diam; ray flower (1)2--6, ray yellow, cream, or white, aging +- pink; disk flower (4)6--21"	"Calycadenia fremontii"
9	"Stem branched, main stem axis generally 0, branches +- many, slender, flexible, generally divergent, often zigzag; paleae 3(4), receptacle cup +- fusiform to club-shaped, length +- 2 &times; diam; ray flower 1(2), ray white, aging +- pink, never yellow; disk flower 2--5"	"Calycadenia pauciflora"