50 APOCYNACE.E. 



and stigma, a one-celled ovary, and capsular fruit. Calyx 4-8 cleft, commonly 5-cleft, 

 hypogynous: leaves simple: stipules none. In Glaux the corolla is wanting: stamens on 

 the calyx, alternate with its lobes. Key to genera and species, p. 141. 



DODECATHEON. 



Species of this genus are described under the generic name Meadia. in Bay-Reg. Bot. 

 and the variety with cream-colored flowers is there named Meadia patula. The many, 

 forms of this genus may well bear one specific name. 



ANDROSACE, Matthiolus. 



A. acuta, Greene. Very slender, 1-4 inches high, rough-hairy: leaves radical, 

 linear-lanceolate, entire, 6-9 lines long: flowers in an involucrate umbel on a scape: 

 corolla salverform, white. 



Trientalis is Alsinanthexnum in Bay-Reg. Bot 



STYRACACE^E. 



Shrubs or trees with alternate, simple leaves, a calyx adherent at least to the base of 

 the ovary: stamens usually at least twice the number of corolla lobes and more or less 

 united to each other and to the corolla. In our species the white downy flowers are 

 about an inch broad, and the filaments are united nearly half their length. Key to 

 genera and species, p. 142. 



This, the Olive Family, is represented on the Pacific Coast by two ash trees, which 

 may be known by opposite pinnate leaves, leaflets 5-9, oval to oblong, the fruit a winged 

 akene. Key to genera and species, p. 142. 



APOCYNACE^E. 



Herbs with milky juice, opposite entire leaves, and regular 5-merous flowers. Ovaries 

 2, but stigmas united and the anthers adherent. Seeds in our species bearing a tuft of 

 silky down at the end. Key to genera and species, p. 142. 



APOCYNUM. 



A. pumilum, Greene. Commonly hairy: lowest leaves subreniform to round-ovate, 

 ovate, the others cordate-ovate and oval, rarely more than an inch long: corolla sub- 



