ORCHID FAMILY. 475 
3. Peramium Menziésii (Lindl.) Morong. Menzies’ Rattlesnake Plantain. 
(Fig. 1133.) 
Spiranthes decipiens Hook. F1. Bor. Am. 2: 203. 
1839 ? 
Goodyera Menziesti Lindl. Gen. & Sp. Orch. 
492. 1840. 
Peramium Menziesii Morong, Mem. Torr. Club, 
5: 124. 1894. 
Scape stout, 8’-15’ high, glandular-pubes- 
cent. Leaves ovate-lanceolate, 114/-214’ 
long, 8’’-15’’ wide, the blade acute at both 
ends, often without white blotches or reticula- 
tions; spike not r1-sided; flowers 3’’-4’’ long; 
galea concave, ovate-lanceolate, the tip long, 
usually recurved, lip swollen at the base, 
with a long narrow recurved or spreading 
apex; anther ovate, pointed, on the base of 
the column, which is prolonged above the 
stigma into a gland-bearing awl-shaped beak. 
In woods, Quebec to British Columbia, New 
Hampshire, New York, Minnesota, Arizona and 
California. Aug. 
10. ACHROANTHES Raf. Med. Rep. (II.) 5: 352. 1808. 
[MicrostyLis Nutt. Gen. 2: 196.  1818.] 
Low herbs, from a solid bulb, our species 1-leayed, and with 1-several scales at the base 
of the stem. Flowers small, white or green, in a terminal raceme. Sepals spreading, separ- 
ate, the lateral ones equal at the base. Petals filiform or linear, spreading. Lip cordate or 
eared at the base, embracing the column. Anther erect between the auricles, 2-celled; pol- 
linia 4, smooth and waxy, 2 in each sac, the pairs cohering at the summit, without caudicles 
or glands. Capsule oval, sometimes nearly globose, beakless. [Greek, in allusion to the 
green flowers ?] 
About 4o species, widely distributed. Besides the following, about 4 others occur in the south- 
ern and western parts of North America. 
Leaf sheathing the base of the stem. 1. A. monophylla. 
Leaf clasping the stem near the middle. 2. A. unifolia. 
1. Achroanthes monophylla (L.) 
Greene. White Adder’s-mouth. 
(Fig. 1134.) 
Ophrys monophyllos 1, Sp. Pl. 947. 1753. 
Microstylis monophylla \,indl. Bot. Reg. pl. 
1290. 1829. 
Achroanthes monophylia Greene, Pittonia, 2: 
183. 1891. 
Stem slender, 4/-6’ high, smooth, glabrous, 
striate. Leaf sheathing the stem at its base, 
the blade 1/-2’ long, 14’-114’ wide; raceme 
1/-3/ long, narrow, 3/’-5/’ thick; flowers 
whitish, about 1’’ long; pedicels nearly erect, 
bracted, 1//-2/” long; sepals acute; lip tri- 
angular or ovate, acuminate, the lateral lobes 
obtuse; capsule oyal, about 3’’ long. 
In woods, Quebec to Minnesota, Pennsylvania 
and Nebraska. July. 
