LlMNORCHIS AND PlPERIA NORTH OF MEXICO 



625 



Stem stout and leafy, 4-6 dm. high : tubers elongated fusi- 

 form, 6-7 mm. in diameter : leaves lanceolate to linear-lanceo- 



late. 1-2 



dm. long, 



1.5-3 cm - wide, 



acute : spike long and dense ; bracts 

 linear-lanceolate, attenuate, about 

 equalling the flowers : these dull 

 white, 16—20 mm. 



long : 



upper 



sepal ovate, obtusish ; the lateral 

 ones lanceolate, acute : petals lan- 

 ceolate, about equalling the sepals ; 

 lip 7-8 mm. long, lanceolate, ob- 

 tuse, the dilated portion ovate ; spur 



filiform, curved, about 2 A longer than 

 the lip. 



Fig. 15. 



This has been merged into Z. leucostachys, which it resembles 



in habit, but the spike is denser, the flowers are 

 white, and the form of the lip is different. 



dull or greenish 



Type : " Arizona, Thurber (925)." 



New Mexico: 1851-52, C. Wright, 1900. 



California: Thomas Bridges. 356; Mammoth, 1891 , Coville & 



Funston, 1822 ; 

 37 ; Canoe Cr< 

 Biolctti ; Sissoi 



/. 



£ Newberry; Nevada, 189 

 H. E. Brown % 120 ; Marin 



N. /. Davis, 



Mickener & 



county, 1873, 



Of 



Edwards; Bernardino Mts., 1882, 5. B. & W. F. Parish, 1321 ; 

 Fresno county, 1900, Hall & Chandler, 150. 



16.. Limnorchis i.eucostachys (Lindl.) Rydb. Mem. N. Y. Bot. 



Garden, I : 106. 



1900 



Platanthcra leucostachys Lindl. Gen. & Sp. Orchid. PI. 288; 

 Habenaria leucostachys S. Wats. Bot. Cal. 2: 134. 1880; Pla- 

 tanthera hyperborea o var. leucostachys Kraenzlin, Orch. Gen. et 



Sp. 640, in part. 1899. 



Stem stout and tall, 6-10 dm. high: lower leaves oblanceo- 

 late, 1-2 dm. long, 1.5-3 cm. wide; the upper lanceolate, acute: 

 spike 1-3 dm. long, rarely very dense ; bracts linear-lanceolate, the 

 lower exceeding the flower : these purely white, 1 5-20 mm. long : 

 upper sepal ovate, obtuse, about 5 mm. long ; lateral ones lanceo- 

 late, acute, 7-8 mm. long: petals lanceolate, attenuate, a little 

 shorter than the upper sepal ; lip lanceolate with a decidedly 

 rhombic base, about 8 mm. long ; spur filiform, scarcely clavate, 



