WOOTON AND STANDLEY FLORA OF 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 (Fernald) Rydb. in Britton, Man. 302. 1901. 

 Goodyera ophioides Fernald, 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 menziesii 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, green or purplish, in a terminal raceme or spike; sepals 

 spreading, separate; petals filiform or linear, spreading; lip cordate or auriculate a1 

 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, Pittonia 2: 183. 1891. = A^A' J S* 1 ^ 

 Micro8tylis montana Rothr. in Wheeler, Rep. U. S. Surv. 100th Merid. 6: 261. 1878. 

 Type locality: Mount Graham, Arizona, at an elevation of 2,800 motors. 

 Range: In the mountains of Arizona and New Mexico. 



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

 dian Zone. 



This is a considerable extension of range for the species. Heretofore it has 1 D 



known in the I'nited States only from Arizona. Specimens in the National Eerbarium 

 are from .Mount Graham and the RincoD and Euachuca Mountain.- of thai 81 



2. Achroanthes porphyrea (Ridley) Woot. & Standi. < onir. 1 8. Nat. Serb. 16: 



i Hi. 1913. = Ma.6uci's dsmmbtm^ 



Miarostylia purpurea 8. Wats. Proc. Amer \- ad 18: L95. 1883, not Lindl. i s i" 

 Microttylia porphyrea Ridley, Jburn. Linn. So,-. B i*S8. 



Aehroantha purpurea Greene, Pittonia 2: 184. L891 



Tyfk locality: In Tanners Canyon, Euachuca Mountains, southern Irisona 

 Rangb: Mountains of southern Arizona and New Mexico. 

 New Mi:\io>: I Loudcrofl I Wooton). 



