OF ARTS AND SCIENCES. 53 



-1— H— Akenes hirsutely pubescent or papillose. 



C. ScHAFFNERi. Facic C. sinuatce ; caule superne pedunculisque 

 cjmaruai pube fui-furacea cinereis ; foliis radicalibus exceutrice peltatis 

 circumscriptione orbiculatis 5-partitis, segmentis bis trilobatis, siuubus 

 obtusissimis latis, lobis oblongis ; capitulis confertis (lin. 4-o-longis) ; 

 involucro 5-7-phyllo 5-7-floro parum bracteolato ; ovario cinereo- 

 pubesceiite. — Near San Luis'Potosi, Schaffaer, no. 294, and an im- 

 perfect specimen also collected by Parry. Possibly this is the little- 

 known G. radulcefoUa, HBK. ; but the leaves of that should be more 

 finely dissected, and the peltate character is not noted. 



C. ciRSiiFOLiA, Hook. & Arn. Bot. Beech. 437. Senecio cirsii- 

 folius, Hemsl. 1. c. I have only an imperfect authentic specimen. 



C. Chiapensis. Senecio C hiapensis, Ilemsl. 1. c. 338. A singular 

 species, " growing in forests " according to the collector, thin-leaved, 

 the lower leaves pinnately 5-lobed ; heads in numerous paniculate 

 cymes, remarkably small, only 3 lines high, 7-8-flowered ; akenes 

 puberulous. It was communicated from tliis herbarium to that of 

 Kew, under another name. S. Mexico, Ghiesbreght. 



* * Corolla-lobes of the same length as the throat: akenes glabrous: 



pappus-bristles barbellulate-clavellate at tip ! — Pericalia, Cass. 

 C. CORDIFOLIA, HBK. 1. c. 168, t. 360. Pericalia cordifolia, Cass. 

 Diet, xlviii. 459. Senecio cardiophyllus, Hemsl. 1. c. 237. Kunth 

 was evidently mistaken in his supposition that the flowers are yellow. 



* * * Corolla-lobes not more than half the length of the throat : 



ovaries glabrous. 



C. PARASITICA, Schultz Bip. in herb. Kew «fe herb. Gray, cited by 

 Hemsley, who characterizes it under the name of Senecio parasiticus. 



C. PENDULiFLORA, Semcio subpeltatus, Schultz Bip. in Seem. Bot. 

 Herald, 311, non Steud. The leaves of this remarkable species are 

 very decidedly peltate. 



* * * * Ambiguous species : corolla merely 5-toothed, flesh-colored : 



habit rather of Erechthites, but the heads homogamous. 

 C. PRENANTHOiDBS, HBK. Nov. GcH. & Spcc. iv. 167. C. Toluc- 

 cana, DC. Prodr. vi. 325. Senecio runcinatus, Less, in Linn. vi. 

 410, therefore Erechthites'? riincinata, DC. 1. c. 295, but has no ex- 

 ternal female flowers. Senecio imdgediifoUus, Schauer in Linn. xix. 

 733? S. eximius, Hemsl. 1. c. 239. Bourgeau's no. 1086, cited by 

 Hemsley under his (not DeCandolle's) Erechthiles runcinata, and 1087, 

 under Senecio eximius, appear to be the very same ; and this author 

 has overlooked Humboldt's plant, to which all appear to belong. 



