﻿Small : North American Plants 319 



character exists in the corolla. In Androsacc scptcntrioualis this 

 organ conspicuously surpasses its calyx while in the newly de- 

 scribed species it is shorter than its calyx or barely equals it. 



Androsace subi mijellata (A. Nelson). 



Androsace scptcntrioualis subumbellata A. Nelson, Bull. Wyom. 

 Exp. St. 28: 149. 1896. 



Annual, diminutive, sparingly pubescent. Leaves basal ; blades 

 thick, oblong, 2-8 mm. long, obtuse, entire, sessile : scapes 1-5 

 mm. long, or wanting : bracts ovate-lanceolate or lanceolate, pedi- 

 cels solitary or several together, 5-10 mm. long: calyx nearly 

 glabrous, turbinate-campanulate, 2.5 mm. high ; segments triangu- 

 lar, acute, slightly shorter than the 5-ridged tube: corolla white 

 or pink, 2.5-3 mm - broad, surpassing the calyx ; segments oblong, 

 obtuse, or retuse at the apex, shorter than the tube ; filaments 

 much shorter than the anthers : capsule globose-pyriform, about 

 2 mm. thick. 



On hillsides, near summit of Union Peak, Wyoming. Summer. 



In order to treat this genus consistently, we should recognize 

 the above as a species. On the one hand Androsace subumbclhta 

 •s related to Androsace diffusa : this species it resembles in habit 

 and foliage, but it is more diminutive in all its parts. On the other 

 hand it is related to Androsace scptcntrioualis in having the corolla 

 exserted beyond the calyx. 



Primula serra. 



Perennial, glabrous or nearly so, deep green. Leaves basal. 

 5-IO cm. long; blades narrowly oblong or spatulate, much 



lo nger than the broadly winged petioles, rather regularly dentate, 

 acute or apiculate : scapes erect, 1-2 dm. tall, solitary or several 

 together : bracts scarious, ovate-lanceolate, acuminate, often mi- 

 nutely pubescent: pedicels 1-3 cm. long, glabrous in age : cahce 

 7 mm. long ; tube campanulate ; segments lanceolate, granular- 

 Cll »ate, acuminate, as long as the tube or shorter : corollas lilac - 

 l )ur ple ; tube as long as the calices or somewhat longer : seg- 

 ments suborbicular or obovate-orbicular, notched at apex, 7-$ 

 mm. long, destitute of apiculations. 



Pri,uul a serra resembles Primula Rusbyi in habit, but both the 

 foliage and the inflorescence furnish characters for distinguishing 

 the two species. In the case of the species just described we find 



