JOURNAL 
OF 
The New York Botanical Garden 
VoL. XIV May, 1913 No. 161 
WILD PLANTS NEEDING PROTECTION* 
7. “Pink Moccasin FLOWER” (Cypripedium acaule Aiton) 
Wir Pirate CXVI 
From the middle of May to the middle of June the “Stemless 
Pink Moccasin” or ‘‘Two-leaved Lady’s Slipper” may be found 
blooming in moist woods and on the borders of swamps or on 
drier hillsides in pine woods. It comes when the orchards are in 
oom, beginning with the violets, anemones and wake-robins 
and in colder, more northern, hilly regions may still be found when 
the laurel and the roses are just unfolding. 
It is probably the most common of all the Cypripediums, 
having the greatest range, extending through British America 
from Newfoundland to Winnipeg and North West Territory, 
and is even supposed to have been one of the species recorded by 
Dr. Richardson from Arctic America. It also occurs sparingly 
in as United States from eens to Kentucky and Tennesscc. 
he flower is large and showy, pendent on a long stalk, about 
a iS high, with two large ve leaves: they taper down to and 
clasp the base of the flower stalk and are in turn enclosed in a 
thin brown bract; there are five prominent parallel veins and 
both surfaces of the leaf are pubescent with short glandular 
airs. Arching over the flower at the top of the scape is a single 
lanceolate bract, about 2 inches long, covering the ovary 
* Illustrated by the aid of the Stokes Fund for the Preservation of Native 
Plants. 
(Journat for April, 1913 (14: 79-95), was issued April 26, 1913.] 
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