314 Lxxvnr. COMPOSITE. (J. D. Hooker.) [Allardia. 



WESTERN TIBET ; Ladak, Stoliczka ; Lahul, Jaeschke, Stewart. 

 Habit of A. to-memosa, and probably a state of that plant, but quite glabrous ; the 

 heads are too young to describe. 



DOUBTFUL SPECIES. 



A. INCANA, Klatt in Sitzunb. Munch. Akad. 1878, 88, with trilobate cano-tomentose 

 leaves, is possibly A. vestita or nivea, but the description is insufficient to identify it. 



66. CHRYSANTHEMUM, Linn. 



Perennial or annual herbs, rarely shrubs. Leaves alternate, entire toothed 

 lobed or pinnatitid. Heads large, terminal, loug-peduncled, or smaller and 

 corymbose, heterogamous, rayed (very rarely discitbrm) ; ray-fl. $ , 1-seriate, 

 fertile, ligule spreading white yellow or rosy ; disk-fl, Q , fertile, tube terete or 

 2-winged, limb 4-5-tid. Involucre hemispheric or broader ; bracts oc -seriate, 

 broad, appre^sed, inner with scarious tips, outer shorter often with scarious 

 coloured margins ; receptacle various, naked. Anther-bases obtuse, entire. 

 Style-arms of > with truncate penicillate tips. Achenes subterete or angled, 

 variously ribbed or winged; pappus or short, or a cup or auricle. DISXRLB. 

 Species about 80, of N. temperate regions. 



Two species of Chrysanthemum are cultivated in Indian gardens, and indeed all 

 over the world. One, the common garden chrysanthemum, C. indicum, Linn. (Wall. 

 Cat. 3227; Roxh. Fl. Ind. iii. 436 ; Clarke Comp. Ind. 146. Pyrethrum indicum, 

 DC. Prodr. vi. 62), is a plant only known in a garden state. The other, C. corona- 

 rium, Linn. (DC. Prodr. vi. 64 ; Clarke Comp. Ind. 147. C. Eoxburghii, Desf. ; DC. 

 1. c. Pyrethrum indicum, Boxb. Fl. Ind. iii. 436. Matricaria oleracea, Ham. in Wall. 

 Cat. 3229), is also only known in India in a garden state, but is a native of the Medi- 

 terranean region. 



1. C. tibeticum, Hook. f. $ T. ; Clarke Comp. Ind. 147; shrubby, 

 puberulous and viscid, branches many slender, leaves \-% in. |-pinnatifid or 2- 

 pinnatilid, segments linear narrow acute or obtuse, heads long- ped uncled, invol. 

 bracts pubescent and -viscid, margins scarious and purple, outer lanceolate acute, 

 inner oblong obtuse, achenes subterete, pappus obscure or 0. ? Pyrethrum 

 Roy lei, DC. Prodr. vi. 56. 



WESTERN TIBET, alt. 9-13,000 ft. ; Shayuk valley, and Indus valley at Kalatza, 

 Thomson. 



Viscid and aromatic, 6-8 in. high; stems branching from the base; branches 

 woody below, stiff, leafy upwards, terminating in solitary heads |-l in. diam. ; re- 

 ceptacle small, convex ; ligules large, numerous, white or rosy, spreading, linear-oblong, 

 tips entire ; achenes immature. Boyle's specimens of Pyrethrum Roj/lei are very poor ; 

 they are more glabrous, the .leaves are more deeply piunatifid than Thomson's, and the 

 heads many sessile, but I cannot separate it satisfactorily as a species. 



2. C. Stoliczkai, Clarke Comp. Ind. 147; shrubby, branched from the- 

 base, pubescent and viscid, leaves - 1 in., radical petioled, cauline sessile linear 

 1-2-pnmatifid, segments slender linear acute, heads long-peduncled, invol. bracts 

 pubescent and viscid, margins scarious purple, outer lanceolate, inner oblong ob- 

 tuse, aehenes narrow strongly 6-ribbed, pappus a large membranous dimidate or 

 lobed sheath. 



WESTERN TIBET ; Dras, alt. 9000 ft., Thomson : Kargil, Stoliczka. 



Habit of C. tibeticum, but the branches are longer, more slender, and less divided, 

 the leaves more divided, the receptacle broader, the outer acute invol. bracts more 

 numerous, and the pappus quite different, half as long as the achene. The ligules are 

 numerous, large, spreading, and white. C. Griffithii, Clarke, of Afghanistan, is very 

 closely allied to this, and has the same pappus (which Clarke has overlooked in C, 

 Stoliczkai], 



