16 



VERMONT MOSSES. 



DRIBIMONDIA Hook. 

 D. prorepens (Hedw.) E. G. Britten. {D. davellata Hook.) Trunks of 



trees, frequent. 



GRIMMIA Ehrh. 



3- 



Donii. 



apocarpa. 



4- 



7- 

 Olneyi. 



5- 



ramulosa. 



6. 



Donii. 



microcarpa. 



fascicularis. 



8. 



I. — Capsule immersed. 



Capsule exserted. 

 2. — Leaf margins plane. 



Leaf margins revolute. 

 3. — Leaves ending in a whitish hair. 



Leaves not ending in whitish hair. 

 4. — Seta arcuate. 



Seta straight. 

 5. — Areolation sinuose, nodulose-linear throughout. 



Areolation roundish quadrate above. 

 6. — Autoicous; very short, densely pulvinate; capsule pale. 



Dioicous; taller, laxly tufted; capsule brown. 

 7. — Leaf cells all elongated and sinuose. 



Upper leaf-cells (at least near apex) quadrate to roundish. 



8.— Leaves narrowly linear-lingulate from an ovate-oblong entire base; lower leaf cells 



rectangular to quadrate. unicolor. 



Leaves broadly ovate-oblong, usually remotely hyaline-dentate above, lower leaf cells 

 linear, sinuose. acicularis. 



G. acicularis (L.) C. Muell. {Racomitrium acicularis Brid.) Rocks by 

 brooks. Mt. Mansfield, P. 



G. apocarpa (L.) Hedw. On rocks, not rare. Smuggler's Notch, P.; 

 Johnson, G.; Brattleboro, Fr.; Willoughby Lake, F. 



G. Donii Smith, var. sudetica ( Spreng. ) Braith. Old stone walls, Brattle- 

 boro, Fr. 



G. fascicularis (Schrad.) C. Muell. {Racomitrium fascicular eBrid.) Mt. 

 Mansfield, P. & G. 



G. microcarpa (Gmel.) Lindb. {Racomitrium sudeticumBviA.) Moist 



alpine rocks. Mt. Mansfield, P. 

 G. Olneyi Sulliv. On rocks near the Connecticut River, Fr. 

 G. ramulosa Lindb. {Racomitrium microcarpttm Brid. ) On rocks at 



summit of Mt. Mansfield, P. & G. 



G. unicolor Hook. Dry rocks. Rock Point, Burlington, G. 



HEDWIGIA Ehrh. 

 H. albicans (Web.) Lindb. (JT. dKato Ehrh. ) Common on exposed 

 ledges. 



