•130 
LXXXIX. ORCHIDACEvE. 
\_JAstera. 
5. Listera Br. Bird’s-nest. Twayblade. 
Lip 2-lobed at the apex. Column wingless. Anther fixed by 
its base. Pollen farinaceous. — Named in honour of Dr. Martin 
Lister , an eminent British naturalist. 
* Column very short. Stem with leaves. Eulistera. 
1. L. ovdta Br. ( common T .) ; stem with only 2 ovate-ellip- 
tical opposite leaves, column of fructification with a crest in 
which the anther is placed. Ophrys L.: E. B. t. 1548. 
Woods and moist pastures, frequent. If.. 5 — 7. — Stem about 1 foot 
high. Leaves striate. Flowers distant upon the spike, yellowish- 
green. Outer sepals ovate ; two lateral inner ones linear-oblong ; lip 
long, bifid, without any teeth at the base. Bracleas very short. 
2. L. corddta Br. ( Heart-leaved T .) ; stem with only 2 
cordate opposite leaves, column without any crest, lip with a 
tooth on each side at the base. Ophrys L.: E. B. t. 358. 
Sides of mountains in heathy spots, in the north of England and 
Scotland. If. 6 — 8. — Boots a few long fleshy fibres. Stems 3 — 5 
inches high. Flowers few, very small, spiked, greenish-brown. Sepals 
somewhat spreading, outer ones ovate, lateral inner ones linear-oblong, 
lip pendent, linear. 
** Column elongated. Stem with scales, without leaves. Neottia L. 
3. L. Nidus- A' vis Hook. ( common Bi) ; stem with sheathing 
scales leafless, column without any crest, lip linear-oblong with 
2 spreading lobes, toothless at the base. Ophrys L. : E. B. t. 
48. Neottia L. : Rich. 
Shady woods in many parts of England and Scotland. 2/.. 5, 6. — 
Boot of many, short, thick, densely aggregate, fleshy fibres. Stem 
1 foot high. Flowers spiked, of a dingy brown. Outer and lateral 
inner sepals oblong-oval, nearly equal. Lobes of the lip spreading. — 
Dr. Lindley has shown that the species without leaves cannot be 
generically distinguished from the first group except by their habit, 
the characters upon which reliance has been placed being less im- 
portant in reality than at first sight they appear. It is the original 
Neottia of Dodonaeus ; Linnaeus in 1740 adopted the genus, uniting 
with it N. cestivalis , but afterwards removed it to Ophrys. The un- 
employed name was then chosen by Jacquin, when he separated N. 
cestivalis and its more immediate allies : there cannot, however, be a 
doubt but that the appellation ought not to be given to that which 
does not contain the Nidus-Avis, the only one having the root neot- 
tious, or like a bird's nest. 
6. Spiranthes Rich. Lady’s Tresses. 
Perianth ringent : the 2 lateral outer sepals erect, placed 
under and including the base of the lip, oblique at the base and 
