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1902] BRIEFER ARTICLES 373 



lobe falcate, linguiform, 0.75'""^ long, o. 3'"'" wide, scarcely narrowed 

 at the almost transverse base, apex obtuse to subacute and usually 

 apiculate, the apiculum consisting of one or two cells, margin sub- 

 entire or sparingly and irregularly denticulate, especially toward the 

 base, occasionally with one or more coarser teeth near the apex, postical 

 margin usually forming a distinct but wide angle with the keel; cells 

 of lobes isodiametric in apical region and along free margin, 12/i in 

 diameter at the apex, 18X 12/x in the middle, and 32X 12/x at the base 

 and along keel, cell-walls somewhat thickened, the thickening more or 

 less uniform but with evident trigones in the median and basal portions 

 of the Iobes,cuticle varying from densely and finely verruculose to nearly 

 smooth; inflorescence autoicous ; ? inflorescence usually on a short 

 branch, more rarely on an elongated branch, sometimes innovating on 

 one or on both sides, commonly without innovation ; leaves increasing 

 rapidly in size toward perianth; bracts mostly in two or three pairs, 

 similar to the leaves, their lobes obtuse to rounded but usually apicu- 

 late at the apex, antical lobe 0.85"^"^ long, 0.35™" wide, postical lobe 

 \.2^^ long, 0.45™™ wide; perianth about one-third exserted, obovoid, 

 1.4'"'" long, 0.7"^"' wide, narrowed toward the base, somewhat con- 

 stricted at the mouth, slightly compressed and with four to six grooves 

 in the upper part, separated by rounded keels, mouth irregularly lacer- 

 ate with setulose divisions, the ultimate setae sharp, one to three cells 

 long: ^ inflorescence borne on a leading branch, more rarely on a 

 short branch, often proliferating at the apex and again floriferous; 

 bracts in two or three pairs, similar to the leaves but with a strongly 

 convex keel, antical lobe broad, inflated at the base; antheridia borne 

 singly ; paraphyses wanting : capsule oval, reddish-brown, borne on a 

 slender stalk; spores 13^1 in diameter, yellowish, minutely verrucu- 

 lose : gemmae borne in irregular masses at the apices of the upper 

 leaves of a branch, composed of one or two angular cells. 



On shaded banks. Rhode Island: Providence and Exeter (C^//m^). 

 Connecticut: Killingworth {Hail); Woodbridge and Hamden {Eaton)\ 

 Orange {Evans). Pennsylvania: Philadelphia {James\ District of 

 Qoi^JMmK {Holzinger). Virginia: Comer creek {Mrs, Britton and Miss 

 Vail). Georgia: i:z\\\Aix\ii2^\s{Underwood\ The specimens from Orange, 

 Conn., in the herbarium of the writer, may be designated as the type. 



Exsic: Muse. Alleg, 230 (as Jungermannza obtusifolid)\ Hep. Bor.- 

 Amer. 23 (as Scapania albicans^ var. faxifoHa minor). 



Whether the inflorescence of Z?. apiculaia is invariably autoicous or 

 whether it may sometimes be dioicous is difficult to determine, since it 



