— 136 — 



the lowest basal. Stem-leaves subovate with often subulate 

 acumen; branch-leaves ovate-lanceolate. Capsule small strangu- 

 late not striate; pedicel thin 3 — 5 c. m. long. Stem flaccid 

 not pinnate and not creeping; branches complanate often long 

 and simple, Fometimes loosed from the stem. Tufts often 

 whitish green. Habit of Plagiothecium vndulatum. Dioecious or 

 pseudo-monoecious, very r. fruiting. — Swamps and wet mea- 

 dows r. Ejir. Sweden and Norway!; E. Nj'man (fruiting). Ger- 

 many: Schimper (fruit.). Amer. Can,: Macoun; Drummond n. 

 196; Moser. 

 * H.snbflaecuin C. M. et Kindb. cat. Can. m. 



Leaves striate gen. ovate-oblong, denticulate above to '/j, 

 straight; those of stem short-decurrent; alar cells more distinct. 

 Tufts green. Capsules unknown. — Swamps r. Amer. Can.: 

 Macoun. 

 SS.H.pseudo-prateiise Kindb. cat. Can. m. 



Differs from H. pratense: Leaves not undulate, more crowded 

 and more distinctly denticulate above. Stem creeping; branches 

 short; tufts very dense and green. jNIonoecious. Capsules un- 

 known. — - Logs in woods r. Amer. Can.: Macoun. 



B. Leaves pale not yellow at insertion, decurrent and not 

 undulate. Branches not compressed. 

 36.H.Lindbergii ]\Iitten. — H. arcuatum Lindb., non SuUiv. 



Leaves as in H. curvifoUum but gen. entire; alar cells large 

 hyaline. Capsule large curved strongly plicate not strangulate; 

 teeth yellow; cilia long-appendiculate; pedicel thick 5 — 6 c. m. 

 long. Stem irregularly divided eradiculose. Tufts us. dirty 

 green. Dioecious very r. fruiting. — On clayey earth. Eur. 

 not r., nearly common in northern districts. Sweden!; S. 0. 

 Lindberg; E. Collinder (fruiting). Norway!; E. Nyman (fruit.). 

 SwitzerL, Italy! Amer. r. Can : Macoun; Moser; Waghorne. 

 37.H.areuatifornie Kindb. cat. Canad. ni. 



Differs from the last: Leaves shorter, ovale-oblong. Capsule 

 small strangulate not striate; teeth pale yellow; pedicel 3 c. m. 

 long. Stem subpinnate creeping. Agrees with the last in ap- 

 pendiculate cilia of endostome. Habit of H. cupressiforme. — 

 On earth in woods r. Amer. Can.: Macoun. 



VIII. Cupressina C. Mueller, in part. 

 1 . Plicatilia. 

 38.H.plicatile Mitten. — Stereodon Mitt.; Hypnum Lesq. et 

 Jam. 



Leaves not decurrent; upper cells lanceolate, alar small finally 



