OF ARTS AND SCIENCES. 159 



nifolia would seem to differ mainly in the greater number of setae and 

 palere of the pappus. H. pluriseta is more different, having much fewer 

 involucral scales as well as flowers, the innermost of the former much 

 broader, the bristles of the pappus, &c. more numerous. The slender 

 and numerous interior scales of the involucre oi H. fasciculata are de- 

 ciduous with the flowers. 



47. CARPHErHORUS ATRiPLiciFOLius (sp. nov.) : caule basi fruti- 

 coso ; ramis patentibus ; foliis oppositis hastatis vel triangulatis plerum- 

 que laciniato-dentatis petiolatis uti'inque appresso-pubescentibus seu hir- 

 tellis ; corymbis nudis polycej)halis ; capitulis circiter 20-floris pedicello 

 brevioribus ; involucri squamis oblongis, exterioribus brevioribus cine- 

 reo-pubescentibus, interioribus paleisque receptaculi fere scariosis ; pap- 

 po plumoso albo ; achenio piloso ; coroUis antherisque ut videtur flavi- 

 dis. — Folia cum petiolo 4-6 lin. longo 1 -2-pollicaria; floralia parva, 

 sessilia. Pedicelli 4-8 lin. longi, glanduloso-puberi. Capitula semi- 

 poUicaria. Involucrum floribus dimidio brevius, squamis leviter striatis 

 obtusiusculis, interioribus glabris. Corolla e tubo brevi extus glanduli- 

 fero infundibuliformis, glabra, lobis brevibus late ovatis siccitate flavis 

 extus parce hisj)idulis. AntherjB semi-exserta3. Stylus basi baud bul- 

 bosus ; ramis planiusculis obtusiusculis minutim hirtellis. Pappi setae 

 circa 20, longe et molliter plumosus. — Without the palea3 on the recep- 

 tacle, which subtend each flower and are rather persistent, this plant 

 would be taken for a plumose Brickellia. It is a close congener of the 

 other South Californian species, 0. junceus. 



48. Perityle Californica, Benth. Bot. Voy. Sulph. p. 23, t. 15 ; 

 forma biaristata, aristis achenio brevioribus. — The awns of the pap- 

 pus are less barbellate as well as shorter than in the published figure, 

 and uniformly two in the flowers examined. The achenium is broader 

 than in any other species, being obovate-oblong, with the summit, bear- 

 ing the pappus, narrow ; when mature broadly obovate with a much 

 thickened callous margin, more so than is represented in the figures, or 

 than appears in the younger fruits ; the corona of the pappus is much 

 more delicate than is shown in the figure, and dissected into slender 

 hyaline squamellge. 



49. SoLiDAGO (Euthamia) diffusa: laxe ramosissima, subgluti- 

 nosa ; foliis fere filiformibus subcanaliculatis ; capitulis oblongis subcla- 

 vatis ; floribus disci 4-5, liguHs - 2 ; alveolis receptaculi paucis longe 

 paleato-pi'oductis. Ericameria diffusa, Benth. Bot. Voy. Sulph. p. 23. 

 — " Fruticulus humilis" according to Bentham ; but our specimens, 



