HABENARIA] ORCHIDEJE. 355 



1. H. bifo'lia, Br. ; leaves 2, flowers whitish, sepals spreading, lip 



linear-oblong entire, spur twice as long as the ovary. Butterfly Orchis. 



Wet meadows, heaths ; ascending to 1,500 ft. in the N. of England ; fl. June- 

 Aug. Tubers 2, ovoid. Stem 6-18 in. Leaves rarely 3, lower 3-6 in., ovate 

 or oblong, obtuse, narrowed at the base, upper small, lanceolate. Spikes 

 4-6 in., lax-flowered ; bracts equalling or exceeding the ovary, green. Flowers 

 1 in. from upper sepal to tip of lip, tinged with green or yellow ; sepals 

 subacute, dorsal broad, lateral large ; petals small ; lip obtuse. Column, 

 without a rostellum. DISTEIB. Europe, N. Asia (Arctic). Very fragrant. 

 The following sub-species are, according to Darwin, very distinct, and require 

 different species of moth to fertilize them. They vary in the position and 

 distances of their anther-cells, and intermediates occur. 



Sub-sp. BIFO'LIA proper ; lateral sepals narrow, spur slender spreading, anther- 

 cells parallel, caudicle short, glands oblong ; fl. June-July. 



Sub-sp. CHLORAN'THA, Bab. (sp. ) ; flowers usually larger greener, lateral sepals 

 broader, spur stout decurved more clavate, anther-cells more distant diverg 

 ing, caudicles longer, glands orbicular ; fl. July- Aug. 



2. H. vir'idis, Br. ; leaves several, flowers green, sepals conniving, 

 lip linear-oblong 2-fid, spur very short. Frog Orchis. 



Hilly meadows, especially northwards, local ; ascending to 2,500 ft. in the 

 Highlands ; fl. June- Aug. Tubers ovoid, often lobed. Stem 3-12 in. Leaves 

 narrow-oblong, obtuse, smaller upwards. Spike lax ; bracts green exceed- 

 ing the ovaries. Flowers ^-^ in. ; hood hemispheric, petals and sepals striped 

 with dark red ; lip paler, browner. Anther-cells diverging, rostellum 0. 

 DISTRIB. Europe (Arctic), Siberia, Dahuria, N. America. 



3. H. albida, Br. ; tubers fascicled, flowers white, lateral sepals con- 

 niving, lip acutely 3 -lobed, spur very short. Gymnadenia, Rich. 



Hilly pastures, from Sussex and Cardigan northwards ; ascending to near 

 1,900ft. in the Highlands; W. and N. of Ireland; fl. June- Aug. Stem 

 6-12 in. Leaves small, obtuse, upper acute. Spike narrow, dense ; bracts 

 green, equalling the ovary. Flowers in., subsecund ; ovary short ; sepals 

 and petals obtuse ; lip small, projecting ; lobes triangular. DISTRIB. Europe 

 except Turkey, W. Siberia, Greenland. Sweet-scented. 



4. NEOTI'NEA, Reich, fil. 



An inconspicuous herb. Tubers ovoid. Flmuers small. Lateral sepals 

 and petals forming a hood. Lip 3-lobed ; spur minute. Anther-cells 

 parallel ; pollen-masses 4, glands free, naked, concealed behind the broad 

 recurved rostellum. Stigmas 2, diverging, linear-oblong or reniform. 

 DISTRIB. France, S. Europe, N. Africa, Asia Minor. ETTM. Originally 

 Tinea, with neo added to distinguish it from the genus of moths. 



1. N. intac'ta, Reich, fil.; leaves oblong often spotted. Tinea, Bivoni. 

 Limestone pastures, Galway ; fl. June. Habit of Gymnadenia albida, but 

 smaller, 4-10 in. Spike dense-flowered, sometimes twisted ; bracts shorter 

 than the ovary, 1-nerved. Flowers J in., pink or purplish ; sepals darker; 

 petals acute ; lip projecting, lateral lobes short linear, middle entire or lobed. 

 I copy Reichenbach's description of the column, anthers, &c. 



5. AC ERAS, Br. MAN ORCHIS. 



Tubers ovoid. Sepals and petals connivent and forming a hood. Lip 

 elongate, 4-lobed ; spur 0. Anther confluent with the column ; cells 

 A A 2 



