160 Lloyd and Underwood : A Review of the 



die, acute, denticulate, bristle-tipped, entire or minutely denticulate, 

 those of the horizontal stems strongly denticulate : strobiles with 

 deltoid sporophylls, erose, subulate tipped : sporangia reniform. 



A widespread species or complex of species extending accord- 

 ing to Baker's treatment* throughout the arctic and alpine zones of 

 both hemispheres and in the mountains of tropical Asia, Africa and 

 Polynesia. He reduces nine species under this name several of 

 which will be found to be distinct. Some of the specimens from 

 the Northwest and Alaska are very unlike the eastern forms and 

 usually have much more forked strobiles and are commonly devoid 

 of bristle tips to the leaves. In some particulars they resemble the 

 east Asiatic and Siberian forms with larger suites of which they 

 should be compared than are available in this country. Mean- 

 while careful field notes of the forms occurring from Oregon north- 

 ward to Alaska are desirable. 



Distribution: Labrador, Newfoundland, Maine, New Hamp- 

 shire, Vermont, Massachusetts, Connecticut, New York, Pennsyl- 

 vania, Quebec, Ontario, Michigan, Wisconsin, Minnesota, Sas- 

 katchewan, Oregon, Washington, Alaska. 



A large proportion of the material from the Northwest which 

 has been examined differs materially from the eastern plant, the 

 . most striking feature being the absence of the bristle tip to the 

 leaf. Plants from Alaska show a dwarfed condition, with shorter 

 peduncles. The distribution of the plant in the Northwest is of 

 interest and is shown here in more detail : 



Washington : In damp woods, 4000-5000 ft. alt., Skamania 

 Co., Aug. 28, 1890, W.N. Suksdorf, no. io3o(C,G,N); 1889, G.R. 

 Vasey, no. 32 (N, G) ; deep woods, Pierce Co., Aug., 1895, C. V. 

 Piper (G) ; forest, Mt. Rainier Range, U. S. South Pac. Exp. Ex- 

 ped., 1838-42, Klickitat Pass, F. E. Lloyd (Y). 



Oregon : Base of Mt. Hood, Nov., 1870, G. Howell (G) ; Bri- 

 dal Vail, Aug., 1897, J. E. Kirkwood (Y). 



British Columbia: Mt. Benson, N. I., July 10, 1893, J. Ma- 

 coun (N) ; 1859, Lyall, no. 13 18 (C). 



Alaska: 1879, C. M. Turner (N) and 1881 (G); Kadiak Is., 

 June 27, 1896, B. J. Bretherton (N). 



The Mexican and Central American representatives of this spe- 



* Handbook of fern Allies, p. 26 



