WOOTON AND STA.NDLEY — FLORA OP NEW MEXICO. 151 



KEY TO THE SPECIES. 



Lip of the corolla evidently saccate, the margins recurved; plants 



low, 10 to 14 cm. high; leaves 20 to 25 mm. long 1. P. ophioides. 



Lip scarcely saccate, the margins incurved; plants taller, 15 to 30 



cm. high; leaves 40 to 60 mm. long 2. P. decipiens. 



1. Peramium ophioides (Femald) Rydb. in Britton, Man. 302. 1901. 

 Goodyera ophioides Femald, Rhodora 1:6. 1899. 



Type locality: Not definitely stated. 



Range: British America to New Mexico, South Dakota, and North Carolina. 



New Mexico: Winsor Creek; Upper Pecos. Damp woods, in the Canadian Zone. 



2. Peramium decipiens (Hook.) Piper, Contr. U. S. Nat. Herb. 11: 208. 1906. 

 Spiranthes decipiens Hook. Fl. Bor. Amer. 2: 203. 1839. 



Goodyera menziesii Lindl. Gen. Sp. Orchid. 492. 1840. 



Peramium vienziesii Morong, Mem. Torrey Club 5: 124. 1894. 



Type locality: Lake Huron. 



Range: British America to New York, New Mexico, and California. 



New Mexico: Winsor Creek; Harveys Upper Ranch; Sandia Mountains; Tunitcha 

 Mountains. Damp woods, in the Canadian Zone. 



The two species grow together, and one is likely to be overlooked because of its 

 similarity in general appearance to the other. 



5. ACHROANTHES Raf. Adder's mouth. 



Low herbs from solid bulbs, with 1 or 2 leaves and 1 to several scales at the base of 

 the stem; flowers small, gi-een or purplish, in a terminal raceme or spike; sepals 

 spreading, separate; petals filiform or linear, spreading; lip cordate or auricula te at 

 the base. 



KEY TO THE SPECIES. 



Flowers greenish, in a very dense spike; divisions of the perianth 



oblong or oblong-lanceolate to ovate 1 . A. montana. 



Flowers purplish, in a loosely flowered spike; divisions of the peri- 

 anth linear or linear-lanceolate 2. A. porphyrea. 



1. Achroanthes montana (Rothr.) Greene, Plttonia 2: 183. 1891. 



Mierostylis montana Rothr. in WTieeler, Rep. U. S. Surv. 100th Merid. 6: 264. 1878. 



Tyte locality: Mount Graham, Arizona, at an elevation of 2,800 meters. 



Range: In the mountains of Arizona and New Mexico. 



New Mexico: Gallinas Planting Station (Bartlett 324). Deep woods, in the Cana- 

 dian Zone. 



This is a considerable extension of range for the species. Heretofore it has been 

 known in the United States only from Arizona. Specimens in the National Herbarium 

 are from Mount Graham and the Rincon and Huachuca Mountains of that State. 



2. Achroanthes porphyrea (Ridley) Woot. & Standi. Contr. U. S. Nat. Herb. 16: 



116. 1913. 

 Mierostylis purpurea S. Wats. Proc. Amer. Acad. 18: 195. 1883, not Lindl. 1840. 

 Mierostylis porphyrea Ridley, Joum. Linn. Soc. Bot. 24: 320. 1888. 

 Achroanthes purpurea Greene, Pittonia 2: 184. 1891. 



Type locality: In Tanners Canyon, Huachuca Mountains, southern Arizona. 

 Range: Mountains of southern Arizona and New Mexico. 

 New Mexico: Cloudcroft ( Wooton). 



