374 pfjOceedings of the amertcan academy 



Arnica viscosa. Subpedalis, undique viscoso-pubescens ; cauli- 

 bus ad apicem usque tequaliter foliosis oligoceplialis ; foliis parvis (major- 

 ibus parum uncialibus) ovato-oblongis integerrimis arete sessilibus ; 

 pedunculis brevibus ; involucro disco subdimidio breviore ; ligulis 

 niillis ; corollis disci ochroleucis ; aclieniis glabriusculis. — On Mount 

 Shasta at about 8,000 feet, Gray & Hooker. Heads rather few-flow- 

 ered, only two-thirds of an inch long. A most distinct species, seem- 

 ingly not before collected, growing near the upper border of the 

 wooded belt. 



EuiTRiCHiUJr HOLOPTERCM, Gray, Proc, Am. Acad. xii. 81, var. 

 SUBMOLLE. Minus; spicis brevibus densifloris nudis pedunculatis cnm 

 ramis floiidis parum hispidis ; calyce (baud ultra lineam longo) sericco- 

 pubescente imberbi, lobis oblongis obtusis ; nuculis augustissime alato- 

 marginatis. — St. George, S. Utah, Dr. Palmer. The species was 

 characterized from specimens not yet well-developed, although bearing 

 a little nearly mature fruit. The present specimens appear to belong 

 to it, but are smaller and lower, with better developed and ebracteate 

 inflorescence, and calyx almost or quite destitute of setose bristles. 

 The lower part of the plant has the same short bristles of the species, 

 with broad papilliform base. 



iacuhim subplannm," it is heniisplierical in age, and it is liigli-conical (as remarked 

 above) in tlie more typical species. 



As to tiie original Ac.iimlhi of Persoon (Arllnm heterophi/lla,,1uss.), wliich seems 

 out of place among the globular- and discoid-headed Cei'hahiJiorin, it is interme- 

 diate in character between Ileleninm and Adinella of Nuttall, differing from the 

 latter only in the looser, thinner, and smaller scales of the involucre. If, not- 

 withstanding this, it were referred to Adinella, this genus would be restored to 

 Persoon, or, under the form of Actinea, to Jussieu. But probably I'ersoon's 

 plant should be referred to Hdenium. 



