[Vol. 9 



132 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



S. Nat. Herb.) ; springs and meadows, W. Klickitat Co., May 

 and September, 1886, Suksdorj (N. Y. Bot. Gard. Herb.) ; 

 meadows and springy places, Columbia River, 12 March and 



September, 1886, Suksdorj 917 (Mo. Bot, Gard. Herb, and 

 U. S. Nat. Herb.) ; on damp ground, Falcon Valley, 16 June, 

 1890, Suksdorj 2373 (Mo. Bot. Gard. Herb.) ; springy places 

 near Bingen, W. Klickitat Co., 5 June, 1894, Suksdorj 917 

 (Mo. Bot. Gard. Herb.); wet ground on mountain slopes 

 near the Columbia River, W. Klickitat Co., 3 August, 1894, 

 Suksdorj 2364 (Mo. Bot. Gard. Herb.) ; on meadows, Falcon 

 Valley, Klickitat Co., 17 July, 1896 ; Suksdorj 2614 (Mo. 

 Bot. Gard. Herb.); on low damp ground, Falcon Valley, 

 W. Klickitat Co., 24 June, 1897, Suksdorj 2615 (Mo. Bot. 

 Gard. Herb.); on wet ground near Bingen, 14 April, 1904, 

 Suksdorj 4443 (Mo. Bot. Gard. Herb.). 

 Vancouver Island: Nanaimo, 13 July, 1887, John Macoun 14219a, 



14219c (Giay Herb.); vicinity of Nanaimo, 3 July, 1908, 

 John Macoun 86378 (Gray Herb, and N. Y. Bot. Gard. 

 Herb.); Nanaimo, John Macoun (Mo. Bot. Gard. Herb.): 



Herb 



of Victoria, 10 June, 1833, John Macoun 533 (G 



J 



The peripheral strands are usually three in number at the 

 igles of the 3-sided; stem; of these three, the dorsal are the 

 sakest, and in some cases, fail to appear. There is variation 



bases of 



brown horny bases (a* 

 three minute teeth, of 



irk 



by 



th *j lateral ones. There is variation in the megaspore character ii 

 that, though most are rather evidently marked, some are almos 

 smooth. 



27. I. Orcuttii Eaton, Fern Bull. 8: 13. 1900. 



/. Nuttallii var. Orcuttii Clute. Fern Allies, 253. 1905. 



Conn slightly 3-lobed; leaves 6-14 (or even 20), 2-6.5, rarely 

 10, cm. long, fine, erect, triangular, with narrow membranaceous 

 margin only at base; stomata present; peripheral strands none 

 or 2, weakly developed; ligule triangular; sporangia orbicular to 

 slightly elongated, L'-5 mm. long, completely covered by velum; 

 megaspores gray at maturity, brownish when wet, 216-360 \i, 

 rarely 480 u, in diameter, closely marked with numerous small 



