14d MR. F. N. WILLIAMS ON THE GENUS SILENE. 
longe pedicellati. Calyx oblongus, fructifer infra capsulam 
attenuatus vix constrictus, hand umbilicatus, striis viridibus 
superne conjunctis, dentibus ovato-lanceolatis, obtusis, albo- 
marginatis, ciliatis, inflexis. Petala alba vel carnea, unguibus 
glabris, utrinque dente acuto auriculatis, paullum exsertis, 
bifida, lobis obtusis, appendicibus binis oblongis, obtusis. 
Capsula, oblongo-cylindrica, superne attenuata, carpophorum 
ter superans. Semina dorso canaliculata, faciebus plana. 
Syn. Cucubalus Douglasii, Haton, Man., ed. VII. p. 266. 
In this revision of the genus, S. Dowglasii is excluded from the subgenus 
Gastrosilene, in which it is placed by Rohrbach, for reasons which are 
given at length in the introduction. Examination of authentic specimens 
by different botanists requires that| Rohrbach’s description should be con- 
siderably amended. It is here described again, therefore, in its proper 
place in the genus. It is a common and polymorphous species in the 
United States, and the following varieties all of them tend to intergrade 
with the type, and are separated from it and from each other by no constant 
or important floral character. S. multicaulis, Macoun (non Guss, nec 
Nutt.), has also been reduced to this species, but is best considered as 
distinct, and is so described as the next species, S. Macounii. 
B. MULTICAULIS, Nutt. (sp.) in Torr. et Gray, Fl., i. p. 192; 
B. L. Robinson, in Proc. Amer. Acad., xxviii. (1893) p. 144. 
Griseo-tomentella. Caules rigidiores, magis foliati. Fol a 
anguste lanceolata vel oblonga acuminata. 
Syn. S. Drummondi var., Torr. et Gray, F'l., i. p. 675. 
Hab. States of Washington, Oregon, Idaho, and Montana. 
y. MAcROCcALYX, B. DL. Robinson, in Proc. Amer. Acad., xxvii. 
(1893) p. 145. 
Puberula vel subglabra. Calyx cylindricus, 15 mm. longus. 
Hab. States of Washington and Nevada. 
e. viscipa, B. L. Robinson, in Proc. Amer. Acad., xxviii. 
(1893) p. 145. 
Glanduloso-viscida, preesertim in parte superiore. Caules erecti, 
rigidi, e basi ramosa simplices. Folia magis carnosula. Calyx 
late oblongus vel fere campanulatus, brevis. 
Hab. State of Washington, and Kicking Horse Pass. in 
British Columbia. 
€. BRACHYCALYX, B. L. Robinson, in Proc. Amer. Acad., xxviil. 
(1893) p. 145. 
Puberula, non viscida. Folia anguste oblanceolata. Calyx 
campanulatus, brevis, latus. 
Se 
een 
