OP ARTS AND SCIENCES. 5 



nervatis pube brevi subtus molli supra strigulosa canescentibus ; 

 capitulis parvulis paucis in pedunculo communi ; involucre campauulato 

 lin. 3-4 alto, bracteis angustis lineari-lanceolatis cinereis ,• ligulis (lin. 3 

 longis) 8-10 pallide luteis ; disco convexo ; acheniis glaberrimis calvis. 

 — Chiapas, Mexico, in forests on the mountain-sides, Ghiesbreght, 554. 



Gtmnolomia platylepis. Tithonia platyJepis, Schultz Bip., and 

 Mirasolia scaberrima, Benth. & Hook. This is obviously one of the 

 latibracteate Gymnolomice. And the genus Mirasolia of Schultz Bip. 

 may be suppressed ; for the Tithonia calva, Schultz, if not truly of 

 that genus, wanting the pappus, may likewise be referred to Gymno- 

 lomia ; and the following is certainly a Tithonia. 



Tithonia diversifolia. Mirasolia diversifolia, Hemsl. Biol. 

 Centr.-Am. Bot. ii. 168, t. 47. This striking species, collected by 

 Botteri and Bourgeau in the vicinity of Orizaba and Cordova, we take 

 to be a strict congener of T. tagetijlora and T. speciosa. One or 

 both of the awns or aristiform paleae of the pappus are not rarely 

 developed, 



ViGUiERA DECURRENS. Tithonia decurrens, Gray, PI. Fendl. 85, by 

 misprint ^^recurrens" in Hemsl. Biol. Centr.-Am. Known only from 

 the specimen of Wislizenus, of which I possess merely a part. But it 

 is a Viguiera of the same section with V. excelsa (which apparently 

 includes the Tithonia pachycephala., DC.) and the very similar V. 

 urticiformis {Leighia, DC, with which SchafFner's no. 2G7 agrees) ; 

 also V. huddleiformis, Benth. & Hook. The latter appears to include 

 Helianthus ricgosics, Schauer in Linnjea. And the squamell® being 

 deciduous as well as the paleaceous awns, this species should rather 

 be restored to Helianthus. 



Viguiera blepharolepis. Frutescens? pube minuta canescens ; 

 caulibus ramisve monocephalis ; foliis oppositis lanceolatis summisve 

 linearibus acutiusculis basi attenuata sessilibus subintegerrimis supra 

 scaberrimis subtus triplinerviis, venulis reticulatis ; involucro (ultra- 

 semipollicajri) lato-campauulato pluriseriatim imbricate ; bracteis con- 

 formibus erectis fere siccis oblongo-spatliulatis apice rotundatis margine 

 insigniter hispido-ciliatis, iuterioribus sensim majoribus ; ligulis sub- 

 linearibus ; acheniis villosis ; pappo ut videtur persistente pluri-paleaceo 

 et biaristato, aristis subulatis achenio subtequilongis, paleolis oblongis 

 saepius insequalibus, majoribus aristis parum dimidio brevioi'ibus. — 

 Northwestern Mexico, Seemann. Apparently not referred to in the 

 Botany of the Herald. My specimen is ticketed " Tithonia angusti- 

 folia, Hook. & Arn.," which species Bentham refers to V. huddlei- 

 formis, doubtless correctly. This, although of the same group, is very 



