VERMONT MOSSES. 25 



THUIDIUM Br. & Sch. 



I.— Plants large (to lo cm.), ascending, erect, i-piunate. 3. 



Plants large (to 10 cm), creeping, 2-3-pinuate. 2. 



Plants small (to 5 cm), creeping, i pinnate. scitum. 

 2. — Stem leaves spreading-recurved, margins plane ; perichaetium not ciliate. recognilum. 



Stem leaves erect-spreading, margins recurved ; perichaetium ciliate. delicatulum. 



3.— Leaf cells roundish or oblong 2-1:1. abietinum. 



Leaf cells long- rhombic to linear, 3-6:1. 4. 



4.— Stem leaves soft, snbclasping, decurrent. Blandovii. 



Stem leaves rigid, plicate-striate, subdecurrent. paludosum. 



T abietinum (L. ) Br. & Sch. Growing in short grass, seldom or never 

 fruiting. Abundant on dry soil near Burlington, especially near 

 Twin Bridges, G.; Willoughby Mt., F.; Smuggler's Notch, B.; 

 Fairhaven, Eggleston. 



T. Blandovii (W. & M.) Br. & Sch. Wet meadow, Willoughby Lake, 

 F.; Peacham, Bl. 



T. delicatulum (L. )Mitt. On the ground, rotten wood, stones and rocks 

 in shad J' places'; common. 



T. paludosum (Sulliv. ) liau & Hervey. Swamps. Brattleboro, Fr. 

 (Det. Sullivant.) 



T. recognitum (Hedw^) Lindb. Inhabit similar to T. delicatulu77i \\\i\v 

 which it is often confused. Distinguished by its spreading, re- 

 curved leaves Avitli their long-celled tliickened acumen. Frequent. 



T. scitum (Beauv. ) Aust. Brattleboro, Fr.; Fairhaven, Eggleston. 



T. scitum aestivale Austin. Base of trees, Johnson, G.; Monkton, 

 P.; Peacham, Bl. Vide Bull. Torr. Club 23:83. 1880. 



Family XIX. Hypnaceae. 



AMBLYSTEGIITM Br. and Sch. 



I. — Leaves with a distinct border of uarrov? iucrassate cells. Lescurii. 



Leaves not bordered. 2. 



2. — Leaves ecostate or with obscure traces of a costa, 3. 



Leaves costate. 6, 



3. — Leaves open-erect to appressed-imbricate. 4. 



Leaves spreading, squarrose. 5. 



4.— Plants minute, filiform (1-2 cm.) confervoides. 



Plants larger, in wide flat tufts. adnatum. 



5.— Alar cells abruptly enlarged, often inflated and colored. stellatum. 



Alar cells scarcely different or quadrate or rectangular. hispidulum. 



