OF ARTS AND SCIENCES. 143 



the hermaphrodite blossoms of Senecio generally, imitates that of the 

 ray-flowers of the genus. 



Senecio evacoides, Schultz Bip., is also in the present collection, 

 but with a pappus the bristles of which are indistinctly, if at all, bar- 

 bate at the apex. 



Senecio pellitus (sp. nov.) : subdioicus ? manus, herbaceus, surcu- 

 losus, acaulescens, undique pilis longis sericeis dense crinitus ; foliis 

 rosulatis obovatis vel subrotundis integerrimis sub-3-5-nerviis in petio- 

 lum brevem attenuatis ; scapo brevi vel subnullo monocephalo ; invo- 

 lucro 20-phyllo ecalyculato; ligulis nullis ; floribus creberrimis ; styli 

 ramis obtusis (nee truncatis) hirtulis ; acheniis glabris ; pappo rigidulo. 

 — High Andes of Peru near Casa Cancha. The flowers in the spe- 

 cimens are structurally hermaphrodite ; but the anthers bear very little 

 pollen, and the style resembles that of the female flowers of S. dicH- 

 nus, &c., to the same group with which this species evidently belongs. 



Senecio wernerioides, Wedd. Chlor. And. I. p. 128, t. 19. 



Var. j8. EXSCAPUS : capitulo inter folia rosulata creberrime pinnati- 

 fido-dentata sessili. — Alpamarca, high Andes of Peru. 



Var. y. SCAPOSUS : scapo multibracteato 3-pollicari folia spathulata 

 simphciter dentata subtequante. — At a lower elevation, between Cul- 

 luay and Obrajillo. 



Bilahiatijlorce. 



Onoseris odorata. Hook. & Arn. To this species (which in- 

 cludes 0. Gumingii, Hook. & Arn.) belongs the Cursonia Peruviana 

 of Nuttall. The bristles of the pappus, said by De Candolle to be bi- 

 serial, are better described by Don as in a triple order, the innermost 

 much larger and stouter, the outermost very short. 



Htalis argentea, Don. The receptacle is naked, with broad are- 

 olse, between which one or two minute setulfB may often be found ; 

 these hardly answer to the character " fimbrillis callosis singulis sub 

 achenio singulo." Pappus no more connate at the base than in all the 

 allied genera, pluriserial, the bristles denticulate. Tails of the an- 

 thers plumose with cobwebby hairs. A more remarkable addition to 

 the generic character, — one which rather militates against Weddell's 

 group of Plaziece, — is that the corollas, although more commonly uni- 

 form and bilabiate, are not rarely, in one or more of the flowers of the 

 head, deeply and equally five-parted, the lobes narrow and revolute, — 

 in this and in some other respects indicating an affinity with Weddell's 

 genus Aphyllocladus. 



