— 15 — 



11. Anacamptodon Bridel. 

 l.A.splachnoides Froehlich. — Orthotrichum Fr.; Anacampto- 

 don Brid. 



Leaves entire ovate-oblong short-subulate; inner cells suboblong; 

 costa vanishing near middle. Capsule suboblong or oval with 

 short neck; teeth dark purplish united in pairs, much longer 

 than segments; lid rostellate; pedicel long thick reddish. Mo- 

 noecious. — Rotten branches of trees r. Eur. France: Schimper; 

 Husnot; Berthoumieu. Amer. »U. S.»: C. M, 



Fam. 4. PterobpyacesB. 



(EndotrichaccEe Kindb. in »Genera of Eur. and N. Amer. 

 Brj'ine8e».) 



12. Pterobryum Homschuch. 

 l.P.cymbifolium SuUivant. — Pilotrichum Sull. ic. m.; Ptero- 

 bryum Mitten. 



Leaves concave from ovate-oblong base gradually short-acu- 

 minate, not recurved; lower basal cells orange, alar very nu- 

 merous; costa reaching to acumen. Perichetial leaves nerveless. 

 Stem Bubpinnate above; branches turgid julaceous. Capsules 

 unknown. ■ — Amer. r. U. S. Florida: SuUivant, com. C. Mueller. 

 2.P.Ludoviciae C. Mueller. — Neckera C. M. ; Pterobryum 

 Kindb. 



DiflEers from the last: Leaves longer-acuminate abruptly nar- 

 rowed; alar cells less numerous; costa percurrent or vanishing 

 in acumen. Perichetial leaves with long-excurrent costa. Cap- 

 sule exserted; pedicel short; peristome not seen. — Trees r. 

 Amer. U. S.: com. Macoun and Cardot. 



Fam. 5. NeckepaceaB. 



13. Neckera Hedwig. 

 A. Capsule not annulate Stem us. pinnate. 



a. Leaves with long sharply dentate-spinulose acumen; upper 

 cells narrow; costa short double or indistinct. 



I. Doiiglasiella. Leaves us. undulate. Capsule more or less 

 emergent; endostome as high as teeth. Dioecious. 



b. Leaves obtusate or short-acuminate, not or faintly denticulate; 

 upper cells gen. wide. 



aa. Leaves with long simple costa. Endostomial segments long. 

 Paraphyllia us. numerous. 



II. Menziesiella. Leaves undulate. Capsule immersed. Di- 

 oecious. 



