igoi] Holm — Canadian Species of Gentiana. 179 



If we compare now the Canadian allies of G. serrata, formerly 

 considered as representing- this species, we mig-ht point out at 

 once some of the most conspicuous characters possessed by these : 

 tb£ frequently carinate and scabrous calyx, the very veiny and 

 fring-ed corolla-lobes, the broadly winged stamens, the constant 

 presence of nectariferous glands at the base of the corolla, the 

 more or less conspicuous style, the roundish stigma and the 

 strongly papillose seeds. These characters appear to be constant 

 and taken together with some habitual differences warrant the 

 segregation of the followmg species : 



, Gentiana Macounii, Holm, 



(Plate XI, Fig-s. i and 2.) 



Annual or sometimes biennial, glabrous excepting the calyx : 

 stem strict, quadrangular, 5 to 30 cm. hig-h, branched from the 

 base : lowest leaves spathulate or oblong lanceolate, the upper 

 linear-lanceolate, acute : peduncles long- and stout, 1 -flowered : 

 calyx (fig. A) purplish-green, unequally cleft to near the middle, 

 4-iobed, the longer lobes lanceolate, the shorter ovate with broad 

 membranaceous margins, all acuminate and carinate, scaberulous 

 with minute short papilla, especially along the keels ; corolla 

 (fig. B) deep bluish, i}4 to t, cm. long, cleft to about I3 of its 

 length, 4-lobed, the lobes very veiny, slightly spreading, broad and 

 fringed along the sides, but merely denticulate across the summit : 

 nectariferous glands 4 at the base of the corolla-lobes : stamens 4 

 with broadly winged filaments, these ciliate in the middle : anthers 

 at first introrse : pistil (fig. C) fusiform, stipitate with short but 

 distinct style ; stigma roundish : mature capsule shorter than the 

 corolla : seeds rough with numerous long papillae. 



The specimens examined are from Fort Pitt, Saskatchewan ; 

 Bow River at Blackfoot Crossing, Lees Creek, Waterton Lake 

 and Banff, Alberta (Macoun), and Red Deer, Alberta {//. H. Gaetz). 

 Habitat g^iven as : Prairies, gravelly soil and margins of marshes. 

 Flowers from July to September. 



Gentiana procera, Holm. 

 (Plate XII, Figs. 3, 4 and 5.) 

 Annual, glabrous except the calyx ; stem erect, angled, 25 to 

 about 50 cm. hig^h, branched above ; lowest leaves spathulate or 



