of the Class Composite. 235 



cartilaginea terminatac, basi bisetas : setis inaequalibus, pu- 

 berulis. Stylus teres. Stigma clavatum, bilobum : lobis 

 crassis, obtusis, conniventibus. Achenia lineari-oblonga, 

 ancipiti-compressa, tuberculis minutis crystallizatis copiose 

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

 plici ordine dispositis, denticulis exasperatis, apice attenu- 

 atis, basi conferruminatis. 



Planta perennis, suffrutescens. Caules ex eadem raclice plures, 

 adscendentes, simplices, tcretes, viminei, Iceves, rigidiusculi, 

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

 Folia Unearia, supernc paululum dilatata, subcuneata, spinu- 

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

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

 calia plurima, erecta, inferne marginibus involutis, penc Jili- 

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

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

 nalis, solitarius, sessilis. Involucrum basi foliis nonnullis 

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

 inde sphacelatis. Flosculi aurei, extus quandoque purpuras- 

 centes. Pappus flavo-cinereus. 



Nomen a wpoo-qXio? apricus, quod huic plantae apte convenit,prop- 

 terea in arenosis et campis apricis se delectare videtur. 



1. P. serrata. 



Chaetanthera serrata. Ruiz et Pavon I. c. p. 191. 



C. Chilensis. Dec. in Ann. Mas. 19. p. 70. t. 3. /. 8. Lag. 



Amen. Nat. 1. p. 38. 

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

 In arenosis prope urbem Conceptionis et in Rere provincial 



Chilensium. Ruiz et Pavon. 1/ . 



This genus differs essentially from the preceding by its imbri- 

 cate involucrum, composed of many unequal, adpressed, entire 



scales, 



