Vol. 44 No. 8 
BULLETIN 
TORREY BOTANICAL CLUB 
AUGUST, 1917 
The ferns and flowering plants of Nantucket—XvVIII 
EUGENE P. BICKNELL 
APPENDIX 
*BOTRYCHIUM TENEBROSUM A. A. Eaton. 
Three plants deep in the thickets of Herrecator Swamp in 
Squam, July 8, 1912. They grew in a dryish spot in a bed of 
‘moss (Catherinea angustata Brid.) with a group of six adder’s tongue 
ferns and a single plant of Botrychium virginianum, all within the 
space of not more than one square foot. The plants were small, 
5-12 cm. high, and bore sporophylls with mature sporanges. 
Their identity has been determined by Miss Margaret Slosson 
at the New York Botanical Garden. Mrs. Britton has given me 
the name of the moss with which they grew. 
*BOTRYCHIUM DISSECTUM Spreng. 
Polpis, August 20, 1910, herbarium of Miss Grace Brown 
Gardner; Thorn lot,asingle plant in damp half shade, June 26, 
~IQI2. 
*BOTRYCHIUM VIRGINIANUM (L.) Sw. 
Squam, July 8, 1912, a single plant associated with Botrychium 
tenebrosum. Divisions of sterile segment 17-19 mm. in length; 
fertile segment rudimentary. 
*POLYPODIUM VULGARE L. 
Reported from Nantucket by Dr. J. A. Cushman (see Rhodora 
13:105. 1911). Nootheroneof ourcommon eastern plants that 
have been found on Nantucket was less to be expected there than 
[The BULLETIN Jor July (44: 321-368. pl. 21, 22( was issued July 14, 1917.] 
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