218 TRANS. OF THE ACAD. OF SCIENCE. 



Specimens from the Altai Mountains are absolutely identi- 

 cal with ours with the exception of the folds of the corolla, 

 which in the former have acute and in ours obtuse lobes. 



Gentiana (Pneumonastthe) Parryi, spec, nov.: caulibus 

 e radice pcrenni ascendentibus vel erectis spithameis singulis 

 pluribusve simplieibus foliosis paucifloris ; foliis glaucescenti- 

 bus e basi lata ovato-subrotundis ovatis seu ovato-lanceolatis 

 obtusiusculis seu acutis patulis, summis angustioribus carinatis 

 naviculatis flores sessiles involucrantibus ; floribus paucis ca- 

 pitals magnis purpureo-cyaneis; calycis 5-fidi membranacei 

 integri hinc plus minus spathaceo-fissi lobis linearibus tubo 

 suo brevioribus ; corollae apertse tubo obconico calycem bis 

 superante, lobis erectis late obovatis brevissime acutiusculis 

 plicas bifidas vix excedentibus; ovario lanceolato basi in 

 stipitem attenuate 



Near the base of alpine slopes on the Snowy Range, Colo- 

 rado, Parry, No. 304, the broad-leaved form; Hall & Har 

 hour, No. 470, partly a narrow-leaved form; Middle Park, 

 Parry, a narrow-leaved 1-flowered variety; a form with nar- 

 row leaves has also been collected by Fremont, Creutzfeld 

 and Howard, as Prof. Gray informs me. Fl. in August. — 

 A very striking species, the large dark purplish blue flowers 

 contrasting beautifully with the broad pale leaves ; stem 5-9 

 inches high, leaves 10-12 or 15 lines long, and from 3 to 10 

 lines wide, slightly roughened on the edges; flowers 15-18 

 lines long, enclosed by a pair of boat-shaped bracts ; calyx 

 with its short linear lobes half as long as the tube of the co- 

 rolla, entire or sometimes more or less slit on one side ; lobes 

 of the corolla about one-third as long as the tube, wider up- 

 wards than at base; slender segments of the folds almost as 

 long as the lobes. — The nearly allied G. calycosa, Gris. dif- 

 fers by its single flowers, absence of involucrum, large oval 

 lobes of calyx, and the length and shape of the folds; G. 

 Menziesii, Gris., and G. platypetala, Gris., both, like the 

 former, northwestern species, have also single flowers, a dif- 

 ferent calyx, and subcordate lobes of the corolla. The Asiatic 

 G. septemfida, Pall., has long folds slit into many bristle - 

 shaped lobes. 



PL 10 represents the broad-leaved form of our species ; in 

 the figure on the left side the uppermost leaf is bent down, 

 to show the shape of the calyx and of the bracts; small flower 

 buds with their bracts are seen on the sides. 



