302 LXXVIII. COMPOSITE. (J. D. Hooker.) [Lagascea. 



TRIBE V. HELIANTHOIDEJE. 



48*. LAGASCEA, Cav. 



Rigid yillous scabrid or subglabrous herbs. Leaves opposite or the upper 

 alternate. Heads in leafy balls, which are solitary terminal and peduucled or 

 in corymbose panicles, 1-fld. ; fl . $ , fertile, tubular, white red or yellow, tube 

 short, limb elongate cylindric or dilated 5-fid. Involucre tubular, of 5 connate 

 bracts ; receptacle minute. Anther-bases sagittate, auricles obtuse. Style-arms 

 elongate, acute, hairy. Achenes cuneate, compressed or 3-angled, tip rounded ; 

 pappus a toothed or fimbriate cup or ring, with sometimes bristles at the angles 

 of the achene. DISTKIB. Species 7, tropical American. 



Xi. mollis, Cav. ; DC. Prodr. v. 91; annual, stern and branches scabrid, 

 leaves petioled ovate acuminate subcrenate silkily tornentose beneath, clusters of 

 heads solitary terminating in slender naked peduncles, flowers white, pappus very 

 obscure. Clarke Comp. Ind. 131. Noccsea mollis, Jacq. Fragment, i. 13. 



A weed in cultivated places, in various parts of India. DISTRIB. Indigenous in 

 Central America ; introduced in various warm countries. 



Much branched, slender, young bracts villous with white hairs. Leaves 1-1 \ in. 

 Heads in clusters (resembling simple heads) |-1 in. diam., involucrate by elliptic 

 leaves, very silky. 



49. ADENOCAULON, Hook. 



Erect annual or perennial herbs. Leaves alternate, lower loug-petioled, 

 white beneath. Heads small in glandular panicles, heterogamous, disciform ; 

 flowers all tubular ; outer 4-7, $ , fertile, rarely with imperfect achenes, limb 

 4-5-fid ; disk fl. 4-5, ^ , sterile. Involucre campanulate ; bracts 5, subequal, 

 herbaceous ; receptacle flat. Anther-bases entire or minutely 2-toothed. Style- 

 arms of $ short, broad; of connate. Achenes oboyoid, obscurely ribbed, 

 covered with stalked glands ; pappus 0. DISTKIB. Species 5, Japan, Himalaya, 

 N. America, and Chili. 



A. bicolor, Hook. Sot. Misc. i. 19, t. 15 ; DC. Prodr. vii. 207 ; stem 

 simple below, panicle and leaves beneath grey with appressed cottony tomentum, 

 leaves orbicular subreniform or subhastate angled and toothed, petiole long 

 winged or not. A. hirnalaicum, Edyew. in Trans. Linn. Soc. xx. 64 ; Clarke 

 Comp. Ind. 132. A. adhaerescens, Maxim. Prim. Fl. Amur. 152. 



TEMPERATE HIMALAYA, from Simla, alt. 6-9000 ft., to Sikkim, alt. 7-12,000 ft. 

 DISTRIB. Manchuria. Japan, N. W. America. 



Root of thick fibres, perennial. Leaves 3-4 in. diam., membranous, nerves slender 

 reticulated ; petiole with sometimes a toothed wing. Panicle with very slender 

 spreading branches and viscid peduncles ; heads in. Achenes much longer than the 

 involucre, clothed densely, like the peduncle, with large stalked glands. I find no 

 material difference between the Himalayan, N. Asiatic, and N. American specimens. 



50. CHRYSOGONTJIH, Linn. 



Herbs or under-shrubs. Leaves opposite, entire toothed or pinnate. Heads 

 solitary or corymbose, heterogamous, radiate, yellow; ray fl. $ , 1-seriate, fertile, 

 ligule entire or 2-3-toothed ; disk fl. $ , sterile, tubular, limb elongate 5-fid. 

 Involucre ovoid or campanulate ; bracts few, rigid ; receptacle flat, with concave 

 pales at the $ fl. Anther-bases entire or subsagittate. Style of undivided, 

 hairy. Achenes of ray dorsally compressed, inner face often keeled or 2-3-ribbed, 



