Aulacomnium.] BRYACE^. 253 



"Var. fasciculare, Bruch & Schimp. Much divided into 

 short nodose branches and flagelliform branchlets. 



Var. polycephalum, Bruch & SchiuftiD. Plants with 

 numerous long pseudopodia. 



Var. alpestre, Schimp. Stems short, slender ; branches 

 fasciculate, copiously fruiting, without pseudopodia. 



Hab. Very common in boggy ground; plains and mountains; the 

 varieties in alpine regions. 



3. A. turgidum, Schwaegr. Widely and densely cespi- 

 tose ; tufts yellowish green above, light brown below ; stems 

 without radicles, easily loosened : leaves closely imbricate, 8- 

 ranked, ovate-oblong, obtuse, concave, very entire, reflexed on 

 the borders, distantly papillose on both faces ; costa thin, 

 vanishing below the apex : capsule slightly narrower than that 

 of the preceding species ; lid highly convex, short-mamillate ; 

 segments split and disjointed ; annulus shorter. — Suppl. iii. 1. 

 Aulacomnium, 7; Bryol. Eur. t. 404. Mnium turgidum, Wahl. 

 Fl. Lapp. 351, t. 23. Gymnocybe turgida, Lindb. 1. c. 85. 



Hab. Bogs; White Mountains [Oakes, James); Lake Superior 

 (Agassiz); Adirondack Mountains {Lesquereux); rare. 



4. A. papillosum. Stems long and slender, flexuous, 

 covered with radicles, divided at the apex into fastigiate short 

 branches : lower leaves distant, the upper gradually closer, 

 sliglitly crispate, yellowish green or shining white, strict when 

 dry, ventricose, decurrent and inflated by loose brown cells at 

 the lanceolate oblong base ; branch-leaves smaller, short-acumi- 

 nate ; stem-leaA'es long-acuminate, more or less undulate toward 

 the apex ; borders revolute in the lower part, erect above, 

 erenate-dentate or denticulate-serrulate ; cells of the areolation 

 single-papillate, close, very scabrous ; costa thick, green, deeply 

 canaliculate, vanishing below the apex ; pseudopodia short, yel- 

 low : fruit not known. — 3fnimn papillosum, Muell. Regensb. 

 Flora. Iviii. 93 (1875). 



Hab. Colorado. 



Species intermediate between A. 'paliistre, and A. androgijnum, differ- 

 ing from the first in the more minutely areolate and papillose leaves; 

 from the second in the leaves very roughly papillose and never coarsely 

 serrate; and from both in the inflated base of the leaves. 



* * * 3fonoecio2cs : male ^flowers gemmiform, axillary. 



5. A. heterosticlium, Bruch & Schimp. Plants in wide 

 pale green tufts, toraentose below J stems increasing by annual 



