OKCHIDACE^. 505 



long as in the large C. Ovaries and axis of the raceme minutely downy. 

 Flowers rather larger than in the narrow C, of a pink red, with a narrow, 

 white lip. 



Stations and geographical range of the last two species, and not uncom- 

 mon in southern and eastern Europe. In Britain extremely rare, having 

 been only seen by very few botanists in Gloucestershire, and possibly in one 

 or two other counties of England. Fl. summer. 



VI. I.ISTERA. LISTERA. 



Herbs, with 2 leaves at some distance from the ground, placed so near 

 together as to appear opposite, and small, green flowers in a slender raceme. 

 Sepals broader than the petals, otherwise all nearly alike, short and spread- 

 ing ; the lip longer, linear, and 2-cleft. Anther fixed by its base in a cavity 

 at the top of the short column ; the pollen as in Epipactis. 



A small European, north Asiatic, and North American genus, readily 

 known among the small-flowered, spurless Orchids by the foliage. 



Leaves ovate, narrowed at the baae, 2 to 4- inches long 1. Twayhlade L. 



Leaves broad or cordate at the base, not an inch long 2. JECeart-leaved L. 



1. Tnray blade Ziistera. laistera ovata, £r. 



(Ophrys, Eng. Bot. t. 1548. TwayUade.) 

 The rootstock has a mass of clustered, thickish fibres, but not near so 

 succulent as in the Bird's-nest Neottia. Stem 1 to near 1^ feet high, with 

 2 or 3 sheathing scales at the base, and at about 6 inches from the ground 

 a pair of broadly ovate, green leaves, 2 to 4 inches long. Raceme rather 

 long and slender. Sepals and petals about IJ to near 2 hnes long ; the lip 

 twice as long, ending in two linear lobes. 



In moist pastures, and woods, throughout Europe and Russian Asia, 

 except the extreme north. Frequent in Britain. Fl. spring and summer. 



2. Heart-leaTed Iiistera. Iiistera cordata, Br. 



{Ophrys, Eng. Bot. t. 358.) 



A much smaller and more slender plant than the TwayUade Z., usually 

 about 6 inches high. Leaves seldom above f inch long, very broad, and 

 sometimes slightly cordate at the base. Flowers very small, in a short ra- 

 ceme ; the hp linear, 2-cleft, with 2 minute teeth at its base. 



On mountaia heaths, in northern and Arctic Europe, Asia, and America, 

 extending southward to the Alps and the Caucasus. In Britain, confined 

 to Scotland, the north of England, and some parts of Ireland, where the 

 stem is occasionally drawn up to two or three times its ordinary height. 

 Fl. sum/mer. 



VII. NEOTTIA. NEOTTIA. 



A genus of very few European and north Asiatic species, distinguished 

 [from Lister a by the brown stems with sheathing scales instead of leaves, 

 I and by a rather longer column in the flower. 



1. Bird's-nest Neottia. Neottia Nidus-avis, Linn. 

 {Ophrys, Eng. Bot. t. 48. Listera, Brit. Fl.) 

 The rootstock consists of a dense mass of thick, rather succulent fibres. 



2x 



