Rydberg : Rocky Mountain flora 639 



Mertensia viridula sp. nov. 



Perennial with a cespitose rootstock ; stems slender, 2—3 dm. 

 high, glabrous ; leaves glabrous beneath, hispid-strigose above ; 

 the lower petioled, the upper sessile ; blades of the basal ones 

 spatulate, obtuse ; those of the stem-leaves acute, elliptic, or the 

 upper lanceolate ; pedicels strigose ; calyx glabrous, except the 

 base and the margins of the lobes ; these broadly lanceolate, about 

 2.5 mm. long; corolla blue; tube about 4 mm. long; throat and 

 limb of about the same length ; filaments broader than the anthers ; 

 nutlets muricate and somewhat irregularly ridged. 



This species resembles M. viridis A. Nels. closely in habit, but 

 the dilated conspicuous fila;ments associate it with M. lincarifolia 

 and ]\I. ovata, from which it is distinguished by the broader calyx- 

 lobes. It grows in the mountains at an altitude of 2700—3800 m. 



Colorado : North Cheyenne Canon, 1894, E. A. Bcsscy (tyy^€)\ 

 West Spanish Peak, 1900, Rydberg & Vi'l eland ^68 j. 



Mertensia Parryi sp. nov. 



Perennial with a cespitose rootstock ; stems about 2 dm. high, 

 glabrous ; leaves glabrous beneath, hispidulous-strigose above , 

 only the basal ones petioled and spatulate ; stem-leaves sessile, 

 lanceolate or oblanceolate, about 5 cm. long ; inflorescence small 

 and short ; pedicels strigose ; calyx glabrous except the very 

 base and the ciliate margins of the lobes ; these narrowly linear- 

 lanceolate, about 3 mm. long ; tube of the blue corolla about 5 

 mm. long and about equaling the length of the throat and limb 

 together ; limb about 8 mm. wide ; filaments evident but short, 

 broader than the anthers. 



This species is nearest related to M. ovata Rydb., but differs 

 in the narrower leaves and the comparatively longer corolla- limb. 

 In M. ovata the tube is longer than the throat and limb together. 

 M. Parryi grows in the higher mountains. 



Colorado : Alpine ridges lying east of Middle Park, Parry 

 2S6 (type); Estes Park, 1903, Osterhout 2848 ; Cameron Pass, 

 1896, Baker ; Alpine Tunnel, 1897, Shear j8j^. 



Mertensia perplexa sp. nov. 



Perennial with branched rootstock ; stem about 3 dm. high, 

 glabrous; basal leaves spatulate, 4— 10 cm. long, petioled ; stem- 

 leaves sessile ; the lower oblanceolate ; the upper ovate, glabrous 

 beneath, minutely hispidulous-strigose above ; pedicels minutely 



