222 LXXVIII. COMPOSITÆ. (J. D. Hooker.) 
Shrubs or undershrubs, Invol. bracts broad. Pappus copious 28. PLUCHEA, 
A small rigid herb. Heads sessile. Corolla of 5 fl. 2-lipped. 
a eee es eS 
Erect or diffuse herbs. Corolla of $ fl. tubular. Pappus 0 . 30. ErarTEs. 
** Heads in dense, globose or ovoid masses. Corolla of 9 ft. filiform. 
Herbs with winged stems. Pappus0 . . . . .. . 91. SPHÆRANTHUS, 
Herbs with winged stems, Pappus hairs slender . . . . 32. PrEROCAULON. 
Subtribe 2. FitLAGINEX. Heads androgynous, often in dense clusters. Ray- 
lowers 9 , filiform, numerous, often enclosed in the long outer scales of the recep- 
tacle ; disk-flowers Y , central, with undivided styles, or, if divided with the arms, 
obtuse or subulate, not truncate.  Invol. bracts scarious or hyaline, rarely 
radiating. 
* Achenes large, 2—4-angled, or many-ribbed, ciliated. 
Glabrous shrubs or undershrubs. Pappus hairs many, short, 
ee ae Atl ee Toe EE dii e DL. 
Glabrous or woolly herbs, Pappus bristles very short, con- 
nate into a fimbriate ring . Es . 94. ATHROISMA., 
** Achenes small, not ribbed. Small woolly herbs, 
Myc gs an a NEEN a Patan M. ERE 
E GER nee oa: a o 
Subtribe 3. GNAPHALIE®, Heads androgynous or homogamous. Jnvol, 
bracts scarious, usually hyaline, or the inner radiating. Receptacle usually naked. 
Style-arms of Y fl. truncate. 
* Fl. © all sterile, with undivided or merely notched styles. Inner invol. bracts 
often radiating. Heads often unisexual. 
Heads corymbose, always diocious. Pappus hairs connate at 
DEDE RR ES i PS We X 0 
Heads glomerate, involuerate. Pappus hairs subconnate at 
BRS DORE fay eu Rate, Ceo vod, » ae odano Mec do teo DEN. 
Heads corymbose. Pappus hairs quite free . . . . . . 39. ANAPHALIS, 
** Fl. 6 all, or mostly fertile, with divided styles. 
Pappus hairs plumose. Minute herb . . . . . . . . 40. Lasrorocox. 
Anther-cells obtuse or apiculate (without tails) . . . . . 41. PHAGNALON, 
Fl. 2 2-co-seriate. Pappus hairs never barbellate. . . . 42. GNAPHALIUM. 
Fl. ? 1-, rarely 2-seriate. Pappus hairs various. . . . . 43. HELICHRYSUM. 
Subtribe 4. ANGIANTHER. Heads homogamous, discoid, small, in crowded 
clusters. — Invol. bracts few, hyaline. Fv. D with truncate style-arms. 
Heads 1-flowered in a leafy involucre. Pappus0 . . . . 44. Casunia. 
Subtribe 5. EuiNULEX. Heads heterogamous, radiate, rarely subdisciform 
or homogamous. Flowers usually all fertile. Receptacle naked, Fl. with 
linear style-arms, rounded or dilated at the top. 
Heads rayed. Pappus hairs few or many, subequal. . . . 45. INULA. 
Heads usually rayed, Achenes hardly ribbed. Pappus hairs 
Mese OF PAT OOM OE ince At Ni nk ge oo ML S 
Heads rayed or discoid. Achenes ribbed. Outer pappus 
of acoiea, inner of heim. os in sk Sees. 
Heads discoid. Achenes slender, striate, beaked, Pappus 0 48. Carprsium. 
TRIBE V. Helianthoidese. Heads usually radiate. Receptacle palea- 
ceous, <Anther-cel/s not produced into tails. Style-arms truncate or appendicu- 
