HiU : Penobscot Plants. 251 



EMPETRACEAE 



Empetrum xigru:m L. Common on headlands and barren 

 outcrops. 



CoREMA CoNRADii Torr. Frsquent. Sterile outcrops and 

 exposed summits of hills. Schist outcrops, Central Tract^ 

 Brooklin (Js^s. 1053, 3012; also A. H. Graves); bar- 

 ren granite hills, Swans Island Head (No. 795) ; barren 

 summit of Mt. Champlain, Isle an Haut (No. 1299). 

 Some thirty years ago Corema was considered a great 

 rarity in our flora and new stations for it were frequently 

 published. Among them were two from the Penobscot 

 Bay region. John H. Redfield writes' that Chas. S. 

 Wilder found the plant on Deer Isle, "not far from 

 Green's Landing (Stoning-ton) on the right of the road 

 leading to ISTorth West Harbor, on a rocky eminence in a 

 small pasture." The same authority cites several stations 

 on Isle au Haut,^ ''the barren summit of the island," 

 "Black Dinah," a bare, round rocky knob near Moores 

 Harbor and one or two other localities. 



AIsTACARDIACEAE 



Rhus typhixa L. Infrequent. Dry fields and hillsides. 



Rhus Toxicodexdeon L. Occasional on headlands or in 

 dry fields near the shore. 



AQUIFOLIACEAE 



Ilex verticillata (L.) Gray. Common in moist woods 

 and roadside thickets. 



var. PADiFOLiA (Willd.) T. & G. Frequent in similar 

 habitats. The specimens referred by Graves to var. 

 tenuifolia (Torr.) Wats, belong to this variety or to 

 the type. 



1. Bull. Torr. Bot. Club 13: 221 (1886). 



2. Bull. Torr. Bot. Club 11: 99 (1884). 



