104 
berries, reaches its most southerly station near Salisbury, so 
far as the local flora is concerned. It has previously been col- 
lected only in the Catskills and far to the northward. 
mrowing on the top of Bear Mountain, near Salisbury, at 
an elevation of 2,500 feet, the writer collected some herbarium 
specimens of the three-toothed cinquefoil (Sibbaldiopsis triden- 
tata) on July 4, 1911. Mrs. Phelps, from near the same 
locality, has now sent us living plants of this rare species and 
at the present writing, they look as though they would grow. The 
plant is found wild from the mountains of Greenland to the 
southern Alleghanies. So far as our range is concerned, it is 
otherwise known only from the highest peaks of the Catskills 
and from the mountains of Pennsylvania. 
The purple Marshlocks (Comarum palustre), which in- 
habits cold bogs, but grows usually in the open sunlight, is also 
among the Phelps collection. It has been collected heretofore 
only at Budd’s Lake, N. J., and is extremely rare even in Green- 
land and Alaska, which are its northern limits of distribution. 
It is now apparently well established among the cranberries and 
chamaedaphnes in the artificial bog 
A trio of specially desirable plants in this collection are 
the Shin-leaf (Pyrola elliptica), Pyrola secunda, and Pyrola 
rotundifolia. ‘These belong to a large class of plants the cultiva- 
tion of which is difficult. This plant is one of a large number of 
species which require a certain fungus in symbiotic association 
with their roots. There is probably some reciprocal benefit in this 
alliance between the plant and the fungus, and it is doubtful if 
such plants as these Pyrolas can be grown successfully without 
a definite inoculation of the soil with the fungal organism. This 
frequently happens in transplanting, and as all our specimens 
seem to be flourishing, it is probable that the reciprocal activities 
of the plant and fungus have been maintained along the border 
mound. All the soil conditions have been made as near like the 
humus-covered forest floor of our woods as can be. 
Many other rare and interesting plants have come in from 
the same collector, but most of them are now growing in ordinary 
garden soil in Section II, and do not require the highly specialized 
conditions described above. 
NorMAN TAayror. 
