366 BICKNELL: FERNS AND 
America there are two species of the lady fern group which appear 
to be amply distinct from each other and from the true Athyrium 
Filix-femina [of Europe]. These are A. asplenoides (Michx.) Desv. 
and A. angustum (Willd.) Presl.”’ In accordance with the indica- 
tions of this paper the common Nantucket plant should bear the 
name Athyrium angustum. The large form that I have mentioned 
answers to var. elatius (Link) Butters, and the red-stalked form 
to var. rubellum (Gilbert) Butters. Athyrium asplenioides seems 
not to have been found on Nantucket, although it is cited by Mr. 
Butters from Sandwich, Massachusetts, and from Block Island. 
Dennstaedtia punctilobula (Michx.) Moore. Abundant in dry- 
ish open places in parts of Trot’s Swamp. 
Equisetum arvense L. Proves to be well distributed, and is 
abundant in many localities. 
Lycopodium obscurum L. Additional stations are Taupawshas 
swamp and south of the Fair Grounds, well-fruited at both places. 
Lycopodium complanatum L. The Nantucket plant is the var. 
flabelliforme Fernald. Localities on the eastern side of the island 
are in Squam, where it fruits abundantly, near Sachacha Pond, 
Pout Ponds, Shawkemo. 
Lycopodium tristachyum Pursh. In great abundance in the 
pine barrens towards the South Pasture, where it fruits pro- 
lifically, the peduncles sometimes bearing seven spikes. 
Pinus rigida Mill. Observed on the north side of Tuckernuck 
Island, June 17, 1911, a few scattered trees, none of them over 
five feet high. 
Larix decidua Mill. In 1911 the tallest trees were estimated to 
be perhaps twenty feet in height. 
Juniperus virginiana L. The tallest red cedars are found 
scattered through the oak woods in Coskaty, and probably exceed 
twenty feet. Among the extensive growth of red cedars on Coatue 
bright green and blue glaucous forms are everywhere grouped 
together in agreeable contrast. On July 13, 1912, both were well 
fruited, the blue form being the more prolific. 
Typha angustifolia L. Under this name are two rather distinct 
