of the Class Composites. 235 



cartilagine4 terminatae, basi bisetae : setts inaequalibus, pu- 

 berulis. Stylus teres. Stigma clavatum, bilobutn : lobis 

 crassis, obtusis, conniventibus. Achenia lineari-oblonga, 

 ancipiti-compressa, tuberculis minutis crystallizatis copiosfe 

 ornata. Pappus setaceo-pilosus, subpersistens : radiis sim- 

 plici ordine dispositis, denticulis exasperatis, apice attenu- 

 atis, basi conferruminatis. 



Planta perennis, suffrutescens. Caules ex eadem radice plures, 

 adscendentes, simplices, teretes, viminei, laves, rigidiusculi, 

 fragiles, palmares v. spithamcei, imd basi lanuginosi et lignosi. 

 Folia linearia, superne paululum dilatata, subcuneata, spinu- 

 loso-dentata, coriacea, rigida, sericeo-villosa, apice tricuspi- 

 data, dente medio longiori, uncialia v. sesquiuncialia ; radi- 

 coMdi plurima, erecta, infern^ marginibus involutis, pent Jili- 

 formia, hinc prout petiolata ; caulina sparsa, breviora, deci- 

 dua, ob basin tanqudm, cum caule articulatam. Flos termi- 

 nalis, solitarius, sessilis. Involucrum basi foliis nonnullis 

 bracteatum : squamis extiis villosis, apice nigro-coloratis, sub- 

 inde sphacelatis. Flosculi aui'ei, extiis quandoque purpuras- 

 centes. Vappusflavo-cinereus. 



Nomen a irpoa-qXios apricus,qwod huic plantse apt^ convenit, prop- 

 tere4 in arenosis et campis apricis se delectare videtur. 



1. P, serrata. 



Chaetanthera serrata. Ruiz et Pavon I. c. p. I9I. 



C. Chilensis. Dec. in Ann. Mus. 19- p. 70. t. 3. f. 8. Lag. 



Amen. Nat. 1. p. 38. 

 Perdicium Chilense. Willd. Sp. PL 3. p. 2118. 

 In arenosis prope urbem Conceptionis et in Rere provincid 



Chilensium. Ruiz et Pavon. % . 



This genus differs essentially from the preceding by its imbri- 

 cate involucrum, composed of many unequal, adpressed, entire 



scales. 



