Rydberg : Rocky Mountain flora 327 



macrophylla. In the latter the outer involucral bracts are elon- 

 gated and reflexed; the former has the involucre of B. Careyana 

 with appressed bracts. I doubt that B. terebinthacea is found east 

 of northwestern Idaho. 



It is a kind of puzzle to me, to determine what rule Professor 

 Nelson followed in making these reductions. The specific name 

 terebinthacea (1833) is much older than macrophylla (1841), and even 

 where Nuttall transferred the former from Heliopsis to Balsamor- 

 rhiza it has page priority. If united, B. terebinthacea should be 

 the species and B. macrophylla the variety. 



Balsamorrhiza floccosa Rydb. and B. tomentosa Rydb. were 

 reduced to synonyms of B. incana and B. sagittata respectively. 

 It may be admitted that they (especially B. tomentosa) are closely 

 related to the species to which they are referred, but I doubt 

 if the authors of the New Manual have seen authentic material of 

 either. In the Bulletin of the Torrey Botanical Club, November, 

 1900, I gave a synopsis of the Rocky Mountain species of this 

 genus, and have not found any material change to make since that 

 time. 



Gymnolomia linearis sp. nov. 



Perennial with a rootstock or slender caudex; stems 3-4 dm. 

 high, terete, strigose; leaves opposite, short-petioled, narrowly 

 linear, 3-4 cm. long, 2-4 mm. wide, entire, hirsutulous, indistinctly 

 3-nerved, sparingly hispid-ciliate at the base; heads long-pedun- 

 cled ; involucres about 6 mm. high, 12-15 mm. broad; bracts 

 linear-lanceolate, canescent-strigose ; rays 10-12 mm. long, 3-4 

 mm. wide. 



This species resembles Gymnolomia longifolia and G. annua in 

 leaf form and general habit, but it is a perennial. From G. multi- 

 flora it differs in the narrow leaves and the slender perennial base, 

 which would be classified rather as a rootstock than a caudex. The 

 type number was included in G. miiltiflora by Robinson and Green- 

 man* as a narrow-leaved form. The other specimens cited by 

 them as belonging to this form, I have not seen, but probably 

 they should be included in G. linearis. 



Utah: St. George, 1877, E. Palmer 241 (type, in herb. Colum- 

 bia Univ.). 



*Proc. Boston Soc. Nat. Hist. 29: 92. 1899. 



