OF ARTS AND SCIENCES: JUNE 11, 1867. 353 



* 



Aster tortifolius (non Michx.) = Aplopappus tortifoKus, Gray, 



afterwards Townsendia (Mec/alastrum) tortifolia, Gray, and the related 



A. Wrightii, which had also been referred to Townsendia, are both 



Asters of this Xylorhiza section. 



Erigeron supplex : humile, snbvilloso-pubescens ; caulibus e basi 

 decumbente adsurgentibus simplicissimis apice nudo raonocephalis ; 

 foliis crebris integerrimis spathulato-lanceolatis sunimisve linearibus 

 soepe glabratis hirsuto-ciliatis ; involucri squamis linearibus acuminatis 

 dprso villosis discuin adsequantibus laxis ; ligulis nullis ; corollis fl. 

 disci marginalium rariter difforraibus 2 - 4-dentatis ; acheniis hispid- 

 ulis binervatis ; pappo e setis barbellato-scabris corolla paullo brevi- 

 oribus setulisqne noniudlis brevibus. — Roadside near Mendocino City, 

 Bolander. I have also a specimen collected by Dr. Andrews, the 

 station not recorded. Stems 3 to 6 inches long, apparently numerous, 

 and spreading from a perennial root. Lower and larger leaves little 

 over an inch in length and 3 lines in width, tapering into a petiole-like 

 base. Head about half an inch in diameter, very many-flowered ; the 

 yellow disk flowers commonly all alike and perfect ; sometimes a few 

 of the outermost a little enlarged, and, as it were, essaying to become 

 ligulate. Tips of the style very obtuse. 



Aplopappus (Stenotus) acaulis = Stenotus acaidis, Nutt., a 

 Rocky-Mountain species, was collected on Mount Davison, Nevada, by 

 Mr. H. G. Bloomer. 



Aplopappus (Pyrrocoma) "Whitneyi : late casspitosus, glandu- 

 loso-scabridus ; caulibus (ultrapedalibus) tenuiter pubescentibus usque 

 ad apicem gequaliter foliosis ; foliis oblongis subamplexicaulibus venulosis 

 grosse argutissime dentatis, imisve angustioribus integrioribus ; capit- 

 ulis paucis subpaniculatis ; involucro 20 - 25-floro oblongo-campanu- 

 lato, squamis lanceolatis acutis appressis ; ligulis 6-8 angustis discum 

 paullo superantibus. — Mono Trail and Sonora Pass, in open woods, 

 alt. 9,000 feet ; grows in large tufts, Bolander. This well-marked new 

 species (named for the Director of the Survey) has the foliage of a 

 Grindelia or of Aplopappus Nuttallii, and few or several rather small 

 heads. The leaves are scarcely coriaceous, an inch or an inch and a 

 half long, acute or obtuse, all but the lower beset with sharp teeth 

 even to the clasping or half-clasping base. Peduncles seldom longer 

 than the heads or the subtending leaf, terminated by one to three more 

 or less foliolose bracteate heads ; these three fourths of an inch long in 

 fruit. Scales of the involucre few-ranked. Branches of the style, 

 VOL. VII. 45 



