53 THE ORCHIDS OF NEW ENGLAND. 
ferns and plumed sedges sway in the wind. With so much 
that is immediately presented to the eye, how can the Tway- 
blade, Lestera cordata, tiniest of our Orchids, hope to turn your 
steps toward her bower? True, you may not appreciate her 
after you have brushed away the branches of Kalmia and Lab- 
rador Tea, and found her to be a plainly dressed little thing, 
perhaps six inches high, but she is entitled to as much respect as 
any of her race. JL. cordata, the Long-lipped or Heart-leaved 
Listera, as Barton calls it, came, in 1883, with Calypso, but in 
our Vermont lowlands generally accompanies C. artetenum. It 
is common all through the Green Mountains during July, par- 
ticularly under the low spruces on the top of Mansfield and 
Camel’s Hump, and, through July and August, may be looked 
for in the White Mountains, where it reaches an elevation of 
3,000 feet to my knowledge, and probably climbs still higher, as 
it requires little sustenance except moisture. Beyond New 
England it extends as far north as Alaska. 
The genus Listera brings to our notice another tribe, that of 
the Neottiez, containing, in this country, Goodyera, Spiranthes 
and Listera, and standing according to structure between the 
Ophrydez and Arethusee. The Neottiee have “the anther 
attached to the back of the column, erect and parallel with 
the stigma; the 2 cells approximate, the pollen rather loose 
or powdery, or elastically cohering.” The genus Listera 
has among other characteristics, the “lip mostly drooping, 
2-lobed or 2-cleft; the column wingless; the stigma with a 
rounded beak; the pollen-masses joined to a minute gland, and 
the roots fibrous.” Of the three species mentioned in Gray, we 
have two in New England, and Lustera cordata has the same 
elaborate mechanism as the British Lzstera ovata. 
“The rostellum is of large size, convex in front and concave 
behind, with its sharp summit slightly hollowed out on each 
side ; it arches over the stigmatic surface. The anther, situated 
behind the rostellum and protected by a broad expansion of 
