616 Rydberg : The American Species of 



damp wooded hillsides at an altitude of 2700-3000 m. The fol- 

 lowing specimens belong here : 



Colorado: Iron Mountain, 1900, Rydberg & Vreeland, 6414 

 (type in herb. N. Y. Bot. Gard.) ; Georgetown, 1878, M. E. Jones, 

 314.; Como, South Park, 1895, C. S. Crandall ; Mouth of Chey- 

 enne Canon, 1896, E. A. Bessey. 



3. LlMNORCHIS brachypetala Rydb. Bull. N. Y. Bot. Garden 



2 : 161. 1901. 



Stem slender, striate, 4-5-leaved, 1-2 dm. long : tubers elon- 

 gated fusiform, 7-8 mm. thick : lower leaves oblong, obtuse, 4-6 



cm. long, strongly nerved ; the upper lan- 

 ceolate, acute : spike short, 5 cm. long 



bracts linear-lanceolate, the lower 2-3 times 

 as long as the flowers : flowers greenish or 

 brownish, 8 mm. long : upper sepals about 

 2 mm. long, nearly orbicular, slightly trun- 

 cate and indistinctly 3 -toothed at the apex; 

 lateral sepals spreading, oblong, obtuse, nearly 3 mm. long : 

 petals round ovate, acute, slightly over 1 mm. long ; lip very 

 narrow, a little dilated at the base and near the apex, acute : spur 

 clavate, almost saccate, nearly straight, about equalling the lip in 

 length. (Fig. 3.) 



In habit and flower most like L. hyperborca, but with a nar- 

 rower lip, shorter petals and shorter and thicker spur, which re- 

 sembles those of the two preceding but is comparatively longer. 



pctala grows in wet places in Alaska and the Yukon 



Territory. 



ton, 116. 



Willit 

 99,/ 



Alaska: Unalaska, 1891, /. M. Macoun, 142. 



4. Limnorchis viridiflora (Cham.) 



Habenaria bore alls ;9 viridiflora Cham. Linnaea, 3 : 28. 1828 ; 

 Habenaria hvperborea S. Wats. Bot. Cal. 2 : 1 34. 1880 ; in part and 

 subsequent authors ; Limnorchis hyperborca Rydb. Mem. N. Y. 

 Bot. Garden, 1 : 104. 1900. 



