Anthers tailed at base. 
not withering. Pappus various. 
"1. Heads 1-flowered, either in spikes or glomerules. 
3h gahbeee « 92. 
2. Heads several-flowered, dived. 
LXX. COMPOSITA. 
Shrublets or half-woody perennials. 
Achenes glabrous. Flowers all per- 
163 
TEES 0:5) < . 62. TANACETUM. 
Marginal achenes villous ; 3 of the 
disk glabrous, abortive . . 63. SCHISTOSTEPHIUM. 
Annuals with pinnatisect leaves . 61. Marricartia. 
Tube of corolla flattened or winged. 
Annuals or small, tufted perennials. 
Corolla not spurred at base . . . 71. Coruna. 
Corolla with a broad spur, infolding 
the ovary . 70, OTOCHLAMYS. 
Virgate shrubs, with entire, ‘sessile 
HCA ESWME oi elt chin. Gaul one ghey) ay ROO ME EMROUSRAS 
** Heads radiate. 
Corolla of disk-flowers 4-toothed. 
Herbs with multifid leaves. 
Disk-flowers flat-tubed. |Achenes 
flat . . pis. « eaeeya, Cunral 
Disk-flowers terete. “Achenes angu- 
lar . 61. Marricarta. 
Small shrubs or half-shrubs. 
Rays female. Leaves linear or 3-fid. 58. ADENACHENA. 
Rays neuter. 
Leaves lobed or pinnatifid . . 52. LIDBECKTA. 
Leaves linear, entire, silky . . 538. THAMINOPHYLLUM. 
Corolla of disk-flowers 5-toothed. 
Involucral scales in 1 row, connate or 
concrete. 
Disk fertile; all the achenes glabrous. 54. GAMOLEPIS. 
Disk sterile ; ray-achenes ee fer- 
tile |, : . 55. STEIRODISCUS. 
Inyolucral- scales imbricate, i in few or 
many rows. 
Rays white. 
Small shrubs or half-shrubs. 
Achenes papillose or glandular. 
Receptacles flat. Ray-flowers 
some filiform,someligulate. 57, PHYMASPERMUM. 
Receptacles convex. Ray- 
flowers all ligulate . 58. ADENACHENA. 
Achenes angular, smooth 59. CHRYSANTHEMUM. 
Herbs with multifid leaves 61. Marricarta, 
Rays yellow. 
Heads corymbose; rays 1-2. . 56. IocastrE. 
Heads solitary, terminal; rays 
Several. -. 0 3) 
59. CHRYSANTHEMUM. 
Subtribe 4. GnapHaLirm. Leaves alternate, very frequently woolly. 
(Gen. 76-106.) 
Pappus feathery . 
Pappus 0 - 93. 
Involucral scales mostly membranous, shining, 
STOEBE. 
PEROTRICHE. 
mM 2 
