16 



1 



subincurva vacua sub ore constricta, peristomii dentibus i6 majus- 

 culis siccis subhorizontaliter incurvis humidis erectis aplce leniter re- 

 curvis, articulatiionibus dorso valde prominentibas; autoica; fl. masc, 

 parvo juxta femineum posito. 



Hab. On the branches of a Live Oak, Florida, Feb. 1877, Copt. 

 John Donnell Smith. 



Mode of growth and form of capsule much as in Hypnum micro- 

 carpum^ C. M., but smaller in all its parts, with narrower and more 

 narrowly reticulated leaves not recurved on the margin, the inflated 

 cells at the basal angles more numerous, peristome single, &c, — Re- 

 markable for the prominent articulations of the peristomal teeth. 



RAUIA, nov. gen. 

 Rauia SCita, Aust. — Hypnum scitum^ Beau v., Prod, p. 69 ; 

 AusT, il/z/i'^. Appalach. n. 300; also this Journal, vol. v., p. 3, 

 Thuidium Appalachiani^ Aust., Mss. 



Modus vegetandi, folii formis et textura ut in Thuidio^ sed cap- 

 sula peristomiaque leskeoidea. 



Thuidium Allenii n. sp. — Caule erecto vel depresso fasciculatim 

 innovando bipinnatim ramuloso dense paraphyllato ; foliis siccis 

 crispatis, humidis latissime ovatis concavis brevissime subacuminu- 

 latis obtusis vel acutis planis vel subsulcatis, margine minutissime 

 papillato-crenulata pro more plana, costa valida fere ad apicem con- 

 tinua, basi auriculata subdecurrente, cellulis minutissimis plerumque 

 distinctis rotundiusculis minute unipapillosis, basilaribus vix majori- 

 bus ; ramulis inferioribus brevibus laxis flexuosis eparaphyllatis, 

 foliis minutis va!de concavis ovatis obtusis, costa tenuiore et paullo 

 breviore ; superioribus majoribus strictis paucissime brevissime para- 

 phyllatis, foliis cum caulinis subconfoimibus; paraphylliis longis sim- 

 plicibus vel parce divisis geniculatis; floribus et fructu ignotis. 



Hab. In a peat swamp near New Haven, Conn., Jan. 1880, J/r. John 



Allen, Communicated by Prof, O, F. Allen of the Sheffield Scientific 

 School. Resembles Thuidium minutulum (^HEDW.),but is muchlargen 

 At a casual glance it would be apt to be mistaken iox Elodiiim paltido- 

 sum^ SuLLiv. But that is never bipinnate, has leaves acutely acuminate 

 with longish cells, which are often not papillose, &c. It gives me 

 great pleasure to be able to dedicate so fine a species to the Aliens, 

 father and son. They have recently sent me ample specimens of 

 some very rare mosses, all in the finest condition. Among these is 

 Trichodon nodulosum^ Aust. 



8. Cheilanthes vestitat Swartz.— Mr. Chas. N. Arnold has sent 

 US from Poughkeepsie a number of specimens of Cheilanthes vestita^ 

 Willd., gathered near that city by Mr. Clarence Lown. A note from 

 Mr. Lown states that this fern was first detected by him growing on 

 the rocks in the vicinity of the river in April, 1S77. Afterwards, in 

 September of the same year, he found it again growing luxuriantly 

 on the rocks at New Paltz Landing, just south of the ferry dock, 

 and opposite Poughkeepsie. The only other known station in New 

 York for this fern is Washington Heights, wliere it was detected 

 some years ago by Mr. Denslow. As Mr. C. H. Peck remarks, Pough- 

 keepsie will doubtless prove its northern limit in this State. 



9. Trichomanes radicans, Swz.— Mrs, F. J. Harlow has sent 



