1900] Andrews, — Orchids of Mt. Greylock, Mass. 179 
towards the margin; thestem is similar in color, with a close scurfy 
covering, glabrous and somewhat yellow above, marked with raised lines 
as in B. /uridus; the tubes are yellow with brown mouths ; the yellow 
flesh and the tubes change almost instantly to blue. Its spores are 
* too small for B. Zuridus," being 10 to 11% by 5 to 517 y. 
In addition there is the usual remnant of isolated collections await- 
ing determination, the final disposal of which may increase the list. 
Specimens of all the species here mentioned are preserved in the her- 
barium of the Alstead School of Natural History, and many of them 
also in that of the Boston Mycological Club. 
ORCHIDS OF MT. GREYLOCK, MASSACHUSETTS. 
A. LeRoy ANDREWS. 
MT. GREYLOCK, from its foremost position among the mountains of 
Massachusetts, and its recent promotion to the dignity of a State Res- 
ervation, assumes such an importance that a brief consideration of a 
few of its floral features may not be out of place. The mountain, 
situated in western Massachusetts, represents a detached spur of the 
Taconic system and forms an irregular mass several miles in length 
and breadth, with several peaks and various depressions and eroded 
valleys. On account of its great extent and its varied conditions of 
altitude, soil, drainage, and exposure it -presents a flora of great 
interest and variety. 
In point of distribution its Orchids especially furnish a study 
which well rewards investigation. We may conveniently divide the 
mountain surface into four sets of conditions, marked generally by 
pronounced floral distinctions, as follows: 1. Unwooded lower slopes 
including grassy pastures, springy meadows, narrow drainage valleys, 
etc. 2. Lower wooded slopes. 3. Upper wooded slopes. 4. Clear- 
ings, at various elevations, generally thickly overgrown with June grass, 
sometimes with blueberry bushes, ferns, etc. 
In the first-mentioned localities, comparatively dry, steep, hillside 
pastures yield Habenaria lacera and Spiranthes gracilis, both very 
common species of this portion of Massachusetts. The more moist, 
level places furnish S. /atifolia and S. cernua. Upon a steep bank 
with a colony of sundew grows Habenaria tridentata. 
