230 Proceedings Port. Soc. Nat. ffist. 



Iris setosa Pall., var. CA^^ADENSIS Foster. Eare, Crevices 

 of rocks on headlands. Black Point, Swans Island (Nos. 

 2337, 2705). This station is a new southward extension 

 for this arctic species. The previous southern limit has 

 been Little Duck Island, off ]\Ionnt Desert.' 



SiSYKixcHiuM AXGUSTiFOLiuM Mill. Verv couinion in fields 

 and pastures. 



SiSYRixcHiuM GRAMiXEUM Curtis. Rare. Sandy beach, 

 Toothaker's Cove, Swans Island (Xo. 2362). 



ORCHIDACEAE 



Cypripedium acaule Ait. Infrequent. Dry rich woods. 



IIabexaria dilatata (Pursh) Gray. Rare. Rich woods 

 near serpentine quarry, Xorth Deer Isle (Xo. 2144), 



Habexaria clavellata (Michx.) Spreng. Common in 

 moist open ground. 



Habexaria obti sata (Pursh) Richards. Cliffs near Mor- 

 ris' Mistake, Isle au Haut (Is. T. Kidder). 



Habenaria eacera (Michx.) R. Br, Occasional in moist 

 fields. 



Habexaria psycodes (L.) Sw, Infrequent. Swampy 

 meadows, Brooklin and Swans Island, 



Habexaria fimbriata (Ait.) R. Br. Common in wet 

 thickets and fields. A form with pure white flowers was 

 collected in damp woods, Gray's Cove, Deer Isle (No. 

 2863). 



PoGOx^iA opHiocxLOSsoiDES (L.) Ker. Abundant in sphag- 

 num bogs. 



Calopogox puLCHELLrs ( Sw. ) R. Br. Very common in 

 sphagnum bogs, 



1. See Norton, A. H., Rhodora 15: 138 (1913). 



