l82 CALIFORNIA ACADEMY OF SCIENCES. 



672. Selaginella RUPESTRis Spring. A long and 

 slender, branching form, the stems sub-terete; leaves 

 gradually narrowed into the straight terminal seta; cilia 

 15-20 each side of the leaf. It is the same as Palmer's 

 No. 92 from San Miguel, Chihuahua. — Growing in the 

 mountains. 



673. Selaginella cuspidata Link. — Common in the 

 mountains. 



674. IsoETES Mexicana Uuderw.* — Sierra de la La- 

 guna. 



675. PoLYTRicHUM piLiFERUM Schreb.? — In the high 

 mountains. 



676. Webera longicolla Iledw. High mountains. 



677. Cylindrothecium cladorrhizans Schimp. — 

 High mountains. 



678. FiMBRiARiA echinella Gottsche. — Mountains. 



679. Anthoceros l^vis L. — Mountains. 



E)icclia cn'orep/ia/a Gray and Ilespcrocallis. iindulata 

 Gray, credited to Cape St. Lucas in a previous paper, 

 do not appear to belong to the region. It is probable that 

 there was some confusion of labels. 



No. 179 of Palmer's Guaymas collection, which was 

 described by Dr. Watson from imperfect material, grows 

 commonly at lower elevations, in the Cape Region, but 

 female flowers and perfect fruit have not yet been ob- 

 tained. It flowers April-May, and although an abund- 

 ance of the male flowers have been sent by correspondents, 

 they seem unable to find the female. 



Several plants are not included in the above list, hav- 

 ing been collected in a state which does not admit of even 

 generic identification. 



"This and the following species were determined by Prof. L. M. Underwood. 



