1907] Hall. Compogitae of Southern California. 187 



But specimens collected together, as under Hall, no. 1289.5, ex- 

 hibit both sorts of tomentum and intermediate shades occur. Mr. 

 Wright 's plant is the only one seen in which the longer lanceolate 

 pappus-paleae occur. This var. can be distinguished from cer- 

 tain Sierran forms of E. lanatum Pursh 45 * (=E. caespitosum 

 Dougl. 45b ) only by its larger size. 



71. AMBLYOPAPPUS H. & A. 



Low annual with gummy sweet-scented herbage. Heads 

 small, discoid, in loose elongated cymes and racemes terminating 

 the simple erect stems. Involucral bracts 4 to 6, rather broad, 

 obovate-oblong. Receptacle small, conical. Achenes small, 4- 

 angled, narrowed below. Pappus of 8 to 12 oblong obtuse paleae, 

 oftened colored. 



1. A. pusillus H. & A., Journ. Bot. iii. 321 (1841). Aromia 

 tcnuifolia Nutt, Trans. Am. Philos. Soc. ser. 2, vii. 396 (1841). 

 Infantea Chilensis Remy, in Gay, Fl. Chil. iv. 259, t. 48, f. 1. 

 (1849-1866). 



Plant about 2 (rarely 5) dm. high: leaves alternate, linear, 

 entire or the lower pinnately 3 to 5-parted and sometimes op- 

 posite: involucres 3 mm. high: flowers 5 to 25 ( !), yellowish. 



From Monterey, ace. to Parry, 46 to Lower California and re- 

 appearing in Peru and Chile. Common near the sea from Los 

 Angeles Co. to San Diego and on the islands from San Miguel 47 

 to San Martin. 



72. RIGIOPAPPUS Gray. 



Slender annual with alternate linear leaves. Heads rather 

 small, solitary, on filiform peduncles terminating the simple stems 

 or branches. Bracts subulate, similar to the upper leaves. Re- 

 ceptacle flat. Flowers yellow, white, or purple. Pistillate 

 flowers 5 to 15, their ligules scarcely or not exceeding the disk. 

 Style-branches of the perfect disk-flowers with a slender-subulate 

 hispidulous appendage. Achenes linear. Pappus of mostly 3 

 to 5 subulate awns, rarely wanting. 



45*Pursh, Fl. ii. 560 (1814). 



45DougL, in Lindl., Bot. Eeg. xiv. t. 1167 (1828). 



4c Bot. Mex. Bound 96 (1859). 



47 Ace. to Greene, Pitt. i. 90 (1887). 



