'Chrysanthemum.'] LXXVIII. COMPOSITE. (J. D. Hooker.) 315 



3. C. Richteria, Benth. in Gen. PL ii. 426; dwarf, laxly villous or 

 woolly, stock short woody much divided with many short tufted leafy branches 

 or stems and few 1-headed slender flowering ones naked above, radical leaves 

 petioled linear-oblong 2-3-pinnatisect, pinnae short rounded, segments minute, 

 cauline few sessile, invol. bracts ovate-oblong obtuse, margins scarious purple, 

 achenes subterete, pappus a coriaceous cup lobed nearly to the base. Clarke 

 Comp. Ind. 148. ? 0. artemisise folium, Klatt in Sitzunysb. Milnd. Akad. 1878, 

 88. Richteria pyrethroides, Karel. fy Kiril in Bull. Soc. Imp. Nat. Misc. 1842, 

 120. Tanacetum pyrethroides, Schidtz-Bip. in Polt,ichia } xx. 441. 



WESTERN TIBET; Ladak and Nubra, alt, 13-17,000 ft., Falconer, Thomson, &c. 

 DISTRIB. Soongaria. 



Whole plant 6-12 in., very variable in pubescence. Leaves 13 in. long. Heads 

 1-1 in. diain. ; peduncles slender; ligules apparently -white. Achenes many-ribbed. 



4. C. Atkinson!, Clarke Comp. Ind. 147; herbaceous, laxly woolly up- 

 wards, root tuberous, leaves oblong or linear-oblong 2-3-pinnatisect, segments 

 very slender linear acute divaricate, heads solitary 1-lg m - diam., invol. bracts 

 very many linear-oblong obtuse, disk narrow green, margins scarious purple, 

 ligules -short recurved purple, achenes angular with -5 strong ribs, pappus 0. 



SIKKIM HIMALAYA ; Yakla and Jongri, alt. 13-16,500 ft., Atkinson, Clarke. 



A stron ly scented herb. Hoot as thick as the thumb, short, fusiform, apparently 

 fleshy within. Stem 6-12 in., solitary, rarely 2 from the root, stout, erect, leafy, ter- 

 minating in a single head. Leaves radical, 4-6 in. long, petioled, the primary segments 

 rather distant, ovate or rounded, alternate acute, cauline sessile. Heads on the 

 thickened woolly top of the stem ; ligules not longer than the involucre ; receptacle 

 convex. Achenes in. long, narrowly obconic, pale, top crenulate, pericarp lax. This 

 plant very closely resembles specimens of Tanacetum longifolium with solitary large 

 heads, but is distinguished by the root, the absence of shining radical petioles, and by 

 the presence of the ray. 



EXCLUDED SPECIES. 



C. GRii-FiTHn. Clarke Comp. Ind. 148, is an Affghan plant. It is very near C. 

 Stcliczkai, and may be a form of that species. 



G7. IKATRXCARXA, Linn. 



Annual or perennial herbs. Leaves alternate, 1-2-pinnatisect. Heads ter- 

 minal, peduncled, solitary or corymbose, heterogamous, rayed (rarely disciform) ; 

 ray-fl. $ , fertile or sterile, ligule white elongate rarely short; disk-fl. , fertile, 

 tube terete or 2-edged, limb 4-6-n'd. Involucre hemispheric ; bracts in few 

 series, appressed, margins usually scarious and brown, outer shorter ; receptacle 

 naked. Anther-bases obtuse, entire. Style-arms of with truncate and peni- 

 cillate tips. Achenes oblong, often incurved, faces glandular or rugulose, 

 truncate, dorsally convex and ribbed or not, ventrally 3-5-ribbed ; pappus very 

 short, coroniform, dimidiate or 0. DISTRIB. About 2*0 species, European, N. and 

 S. African, Asiatic, and American. 



1. M. Chamomilla, Linn. ; Boiss. Fl. Orient, iii. 323 ; aromatic, leaves 

 2- 



conic, 

 Prodr. 

 Clarke Comp. Ind. 149. 



UPPEB GANGETIC PLAIN and the PUNJAB, Eoyle, Thomson. DISTRIB. N, Asia and 

 westwards to the Atlantic. 



Much branched. Heads |-| in. diam., corymbose; ligules reflexed after flowering 

 or 0, receptacle elongating during fruiting. Achenes small, grey; ribs slender, 

 while, 



