616 



Rydberc; : The American Species of 



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

 lowing specimens belong here : 



Colorado: Iron Mountain, i goo, Rydbcrg & ] rccland, 6414 

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

 J 14; Como, South Park, 1895, C. S. Crandall ; Mouth of Chey- 

 enne Caiion, 1896, E. A. Bcsscy. 



3. LiMNORCHis BRACHYPETALA Rvdb. 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 nerv^ed ; 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, slightl}' trun- 

 cate and indistinctly 3 -toothed at the apex ; 

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

 petals round ovate, acute, slightly over i 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. Jiyperborca, 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. 

 L. brachypctala grows in wet places in Alaska and the Yukon 

 Territory. 



Yukon Territory : Bennett City, 1 899, R. S. Williams (type 

 in herb. N. Y. Bot. Gard.); above Fort Selkirk, 1899, /.i>. Tarlc- 

 ton, 116. 



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



4. Limnorchis viridiflora (Cham.) 



Habenaria borealis /9 viridiflora Cham. Linnaea, 3 : 28. 1828 ; 

 Habe?taria hvpcrborea S. Wats. Bot. Cal. 2:134. 1 880 ; in part and 

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

 Bot. Garden, i : 104. 1900. 



