SKETCH OF THE FLORA OF ALASKA. 4G1 



B. inclinatum, Br, and Scli., Kotzobuo soimd. 



B. capillure, Hedw., Sitka. 



B. argentt'um, Linn., Iktigalik. 



Mnium punctatum, lledw., Sitka. 



M. rostratum, Schwasg., Kotzebuo sound. 



]\I. affine, var. Zelatum, Br. and Sch., Sitka. 



M. Menziesii, Kook., Sitka. 



Aulacomnion turgiduni, Soliwaeg-., Kotzebue sound. 



A. palustre, ■ScliwiCg'., Kotzebuo sound, Sitka and Nulato. 



Pogonatum capillare, Miclix. and Brid., Kotzebue sound and Sitka, Alaska. 



P. alpinum, Linn., var. foliis capsulis longioribus, Kotzebue sound and Sitka.* 



P. alpinuin, var. furcatuni, Brid., Schischimarefi' bay, (Cliamisso.) 



P. alpinum, var. canipanulatuni, Brid., Ounalasbka, (Chaniisso.) 



P. atrovirens. Mitten, Sitka, (Barclay.) 



P. contortum, Menz., northwestern coast of Russian America^, (Meuzies.) 



P. dentatum, Menz., noi-tbwestern coast of Russian America. 



Polytrichum gracilo, Menz., Kotzebue sound. 



P. formosum, Hedw., Alaska, (Kellogg.) 



P. cavifolium, AVilson in Bot. Herald, (Seeman,) Kotzobuo sound. 



P. piliferum, Schreb., Alaska. 



P. juniperinum, Willd., Kotzebuo sound and Nulato. 



P. juniperinum, var. strictum, Br. and Sell., Kotzebuo sound and Sitka. 



P. juniperinum, var. Ibliis distantibus, angustioribus patulis, Kotzebue sound, 

 Bitka, and Nulato. 



P. sexangulare, IIopp., barren specimens from Herald island. 



P. commune, Linn., Sitka. 



Antitricbia curtipendula, Brid., Sitka. 



A. Califomica, Lesqx., Alaska. 



Neckera Douglassii, Hook., Steekine, Alaska. 



N. Menziesii, Hook., Alaska. 



Alsia Californica, Lesqx., Alaska. 



HypriiuTi triquetrum, Linn., Nulato and Alaska. 



H. loreum, Linn., Sitka and Alaska. 



H. squarrosum, Linn., Sitka. 



PI. cris])ifolium. Hook., Northwestern Russian America, (Menzies.) 



H. laxifolium. Hook., Northwestern Russian America. 



H. splendens, Hedw., Nulato and Alaska. 



H. strigosum, Hoffm, Nulato. 



H. undulatum, Linn,, Sitka. 



H. lutescens, Huds., Kotzebue sound and Alaska. 



H. myosuroides, var. stoloniferum, Hook.^ Northwestom Russian America, 

 Sitka, and Alaska. 



* Mr. W. H. ])all, in 1865-66, collected a number of mosses in Eastern Siberia, on the 

 western side of Behrings' straits, and opposite to Norton sound, among which was a ni'W 

 species of Pogonatum, wliich no doubt will be dftected in Alaska, wlien explored. Tlio 

 species being interesting, it is deemed appropiiate to introduce it by tbe following descrij)tiou : 



Pogonatum lamoUosum, sp. nov., dioicum, caule simplici vel ramoso, foliis solidis rigidis 

 incurvis eauli appressis ; e basi pellucida latiore amplexicauie, concavia lanceolato-acumiua- 

 tis margiue integra aut denticulata, lamellis numerosis margine subitotumidis, folii paginain 

 e basi ad apicem totam occupante : pencliJetialibus o basi iougioribus vagiuautibus ei ectis 

 an;:usto-lancculatis, tenui costatis ; perigonalibus exteruis angusto-lanceolatis, externis 

 obcordato-apiculatis ; capsula in pedicello flexuosa unciali, blobosa vel ovato-cylindrica 

 obliqua aut cernua, operculo e basi depresso-convexo rostellato iucurvo conioo, peristomii 

 dentibus aqualibus : calyptra non visa. 



This beautiful Pogonatum is more slender than P. urnigerum, the laiiulljc of the loaves 

 occupy the entire upper surface from tho sheathing base to the apex ; the leaves most readily 

 separate from the translucent clasping base; the margins of the leaves are mostly entire, 

 occasionally more or less denticulate at the apex. Tlie capsule is globoseiy oval in form 

 and curved, the operculum appears to be shortly rostrate. 



