118 Rhodora [JUNE 
mosses ! and sedges (Scirpus caespitosus L., S. hudsonianus (Michx.) 
Fernald, Carex gynocrates Wormsk., C. exilis Dewey, C. diandra 
Schrank, &c.). 
We went perhaps a mile back from the railroad far beyond the 
fringe of larches and found to the north a broad open prairie-like 
expanse with occasional scattered islands of small trees; and in the 
near distance a wonderful panorama of Mt. Katahdin. Most inter- 
esting of all the plants of this open boggy prairie was the rare and 
deliciously fragrant Habenaria leucophaea (Nutt.) Gray, somewhat 
like a much overgrown H. blephariglottis with very large creamy 
flowers. In the entire afternoon we saw less than a dozen plants 
though they were conspicuous from a distance. This extreme rarity 
of Habenaria leucophaea is of special note. No other stations are 
known in New England? and the species is nearly as rare in New 
York, but throughout the prairie region it is (or was) one of the char- 
acteristic plants in low areas. In studying the distribution of this 
rare orchid we note that the peculiar association of species which is 
found on Caribou Bog (and so far as we know on no other bog of New 
England) is repeated in many of its details on the famous Bergen 
Swamp in Genessee County, New York, a swamp which “has long 
been considered one of the most interesting botanical points in western 
New York, *" and in similar marshes in Wayne County, New York.* 
Thus, it is unusual in bogs of New England and New York to find such 
caleiphile species? as Valeriana uliginosa, Parnassia caroliniana, 
and Cypripedium parviflorum associated with the calcifuge Ledum 
groenlandicum and Arethusa bulbosa and the commonly maritime 
Triglochin maritima; yet these plants of the Crystal bog are found in 
Bergen Swamp and in the marshes of Wayne County. It is also un- 
usual to find the calciphile Carex vaginata, C. gynocrates, and Tofieldia 
glutinosa, the local (possibly calciphile) Lonicera oblongifolia, the 
commonly maritime Phragmites communis, and such a characteristic 
1 For notes on a few of the characteristic Bryophytes of Caribou Bog see J. F. Collins, 
RHODORA, X. 37 (1908). 
2 The report of H. leucophaea from the Dead River region (Bull. Josselyn Bot. Soc. 
no. iii. 19) was based upon an anomalous H. fimbriata. 
3 Beckwith & Macauley, Proc. Rochester Acad. Sci. iii. 10 (1894). 
4 For notes on these swamps see Beckwith & Macauley, Plants of Monroe County, 
New York, and adjacent Territory — Proc. Rochester Acad, Sci. iii. 1-150 (1894). 
5 The plants here spoken of as calciphile are commonly found in eastern Canada, 
New England and New York only on calcareous soils, while the calcifuge species are 
rarely (at least with us) found upon calcareous soils. 
