CARY0PHYLLACEJ1. 243 



2. Sagina Linmii, Presl. 



Hab. Nisqually, Puget Sound ; also near Gray's Harbor. (Stamens 

 sometimes only from 7 to 9.) 



3. A L S I N E, Wahl, Fenzl. 



1. Alsine tenella, Nutt. in Torr. & Oray. 



Hab. Puget Sound. — Probably, as Fenzl supposes, only an Ameri- 

 can variety of A. tenuifolia, Crantz. 



4. ARENARIA, Linn. 



1. Arenaria congesta, Nutt. 



Arenaria congesta, Nutt. in Torr. & Gray, Fl. 1, p. 178. 



Hab. On the Columbia River and its tributaries. — Stems 1 to 2 feet 

 high, straight, compressed. Radical leaves sometimes 3 or 4 inches 

 long; stem leaves shorter, erect. Heads of flowers about three- 

 fourths of an inch long j the bracts finally rigid and pungent. 



2. Arenaria Formosa, Fisch. 



Hab. Prairies between the Cascade Mountains and the Upper Co- 

 lumbia. — The upper part of the stem, as well as the peduncles and 

 sepals, are glandularly pubescent. The radical leaves are more than 

 an inch in length; those of the young shoots much crowded and 

 curved ; the mucronation either curved or straight. Sepals broadly 

 ovate, membranaceous, and very obscurely 3-nerved. Capsule globose- 

 ovate. Perhaps distinct from Fischer and Ledebour's plant, but it is 

 pretty certainly A. nardifolia of Hooker. 



