350 Floristik, Geographie, Systematik etc. 



english language) of a number of new species, with extensive 

 remarks on relations with other species and on the specimens 

 examined. 



C. multicostata, related to C. brevior (Dewey) Mack. but is dis- 

 tinguished by the more colored scales, more strongly nerved peri- 

 gynia and relatively longer perigynia beaks. C. leporinella (C. tenui- 

 rostris Bailey, not Olney, resembles to C. phaeocephala Piper, but 

 is distinguished by the narrowly margined „boat-shaped" perigynia. 

 C. Davyi, differs from C. petasata Dewej^ by its perigynia practi- 

 cally concealed by the scales and its noticeabry wider leaf-blades. 

 C. lancifructus, often confused with C. specifica Bailey, which has a 

 ver}'- membranaceous texture of the sheaths opposite the leafblades, 

 the new species lacks this character. C. integra, disdnhuished from 

 C. subfusca W. Boott, by the very small, narrow perigynia, and 

 especially by the margin of body and beak being smooth. C. tene- 

 raeformis, related to C. subfusca W. Boott, from which it is to be 

 distinguished by the loose infiorescence and in general by being a 

 much more slender plant. C. olympica (California, Oregon, Washing- 

 ton, British Columbia), in general most closely related to C. pachy- 

 stachya Cham., but it is a more slender plant with looser infiores- 

 cence and less spreading perigynia and narrower lighter-green 

 leaf-blades. C. amplectens (Sierra Nevada Mountains) with bracts 

 especially amplectant at flowering time. C. subbracteata, closely 

 related to C. gracilior, but it is a much more robust plant with a 

 more capitate head and wider leaf-blades. C. gracilior (Coast ranges). 

 C. paucifructus (Sierra Nevada Mountains). C. Harfordii (only re- 

 ported from near the coast). C. pachycarpa (C. adusta var. congesta 

 Boott., C. Liddoni var. incerta Bailey, in part), resembles coarse 

 specimens of C. abrupta Mack., the perigynia, however, are mar- 

 kedly different. C. abrupta, distinguished by its abruptly beaked 

 thin-walled strongly nerved perigynia. C. mariposana, closely 

 related to C. abrupta Mack. However, the red scales in strong con- 

 trast with the green perigynia, together with the looser infiorescence, 

 give it quite a different aspect. Jongmans. 



Rydberg, P. A„ Phytogeographical notes on the Rocky 

 Mountain Region. VI. Distribution of the subalpine 

 plants. (Bull. Torrey Botan. Club. XLIII. p. 343—364. 1916.) 



The author publishes the following summary at the end of 

 his paper. 



The subalpine flora contains over eight hundred species. Of 

 these about 30 per cent are also found above the timberline and 

 about 60 per cent are also found in the Mountain Zone or pine belt. 

 This leaves only about 10 per cent, which are restricted to the 

 subalpine zone. The percentage of characteristic subalpine species 

 is, however larger, probably 25 per cent or 30 per cent of the 

 number, for the 30 per cent growing above the timberline is divided 

 into two categories, alpine plants descending below the timberline, 

 and subalpine species ascending above the same. So are also some 

 of the plants which are common to the Subalpine and Montane 

 Zones, essentially subalpine, though they descend into the upper 

 part of the Montane Zone. A small proportion is even common to 

 the three zones, as for instance Poa crocata. s 



Of the eight hundred species, over 20 per cent are transconti- 





