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370 BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 
this rock-loving and woodland fern. The manner of its occur- 
rence is therefore worthy of attention. Itsdiscoverer, Miss Grace 
Brown Gardner, wrote me in August, 1910, that it had been found 
that month among the Miacomet pines not far from where the 
heather grows, ‘‘only one small plant with less than a dozen fronds, 
and only one fruiting one.” Miss Gardner’s description of the 
locality enabled me two summers later, on July 5, 1912, to find 
the station without any difficulty. There were then two plants 
about six inches apart, one having five, the other four fronds, none 
of them bearing sori. The plants were in deep shade and grew 
within the rim of a circular depression in the ground about three 
and a half feet in diameter and a foot in depth where, long before, 
a tree may have been removed or an excavation made for planting 
one. Similar hollows are to be seen elsewhere among the pines, 
which are said to have been set out in 1876. The ferns grew in a 
bed of moss, Rhynchostegium serrulatum (Hedw.) Jaeg., deter- 
_ mined by Mr. R. S. Williams, and overarching them were two 
fronds of Dryopteris spinulosa. Needless to say all were left un- 
disturbed. Notwithstanding the very natural surroundings the 
evidence is clear that the spot had not been unknown to the spade, 
and some connection may be suspected between this and the 
presence of the polypody. Like the heather it may have come in 
with the pines, possibly from Europe, or it may have been long 
ago planted there, perhaps by some tourist plant lover visiting 
the heather. : 
*PHEGOPTERIS PHEGOPTERIS (L.) Underw. 
Phegopteris polypodioides Fée. 
Dense hillside thicket north of the Wauwinet road towards 
Abram’s Point. Here, on June 9, 1912, it grew in great profusion 
thickly covering the ground throughout a space of fully twenty- 
five by fifteen feet and fruiting abundantly. 
LYCOPODIUM OBSCURUM L. 
The var. dendroideum (Michx.) D. C. Eaton was collected west 
of Capaum Pond, May 31, 1909, the strobiles beginning to wither. 
Mrs. Flynn has sent me a specimen collected west of the town 
August 13, 1911, bearing fifteen well-developed spikes. 
*ISOETES TUCKERMANI A. Br.? 
Professor W. A. Setchell has very kindly forwarded to me speci- 
