330 EXPEDITION TO JAPAN. 



Aspidium setosum, Swartz, I. c. p. 56. Polypodium setosum, TJiunb. 1. c. Yokohama ; on 

 steep and rocky banks. A fine species, of nearly coriaceous texture, which accords pretty well 

 with Thunberg's description. What he describes as "pilisatris longis laxis," clothing the 

 stipe and rhachis, are long-awned, narrow, chaffy scales. 



Aspidium (Lastrea) erythrosorum, Eaton, (n. sp.): frondibus bipinnatis ovato-oblongis, pinnis 

 sub-oppositis lanceolato-oblongis basi paullo augustioribus, pinnulis oblongis obtusis trunca- 

 tisve serratis, venulis furcatis ; soris margine dissitis in venula superiori ; indusio reniformi 

 intense rubro margine albo integro ; paleis rhachidis augustis linearibus, costas secundarias 

 linearibus e basi orbiculari crispatis. — Simoda. Frond 1 or 2 feet high ; pinnas 2 to 4 inches 

 long, and 6 to 10 lines wide. I do not find this described, nor can I suppose that so remark- 

 able a character as a bright-red indusium would have been overlooked. 



Aspidium (Poltstichum) Tripteris, Eaton, (n. sp.): fronde trisecto, segmento medio maximo 

 lanceolato, lateralibus 3-4-plo brevioribus nunc pinnas segmenti intermedii vix excedentibus, 

 omnibus pinnatis, pinnis alternis lanceolatis falcatis acutis (in pi. depauperata oblongis nunc 

 obtusis) basi superiori auriculatis inferiori cuneatis argute inciso-serratis, dentibus spinulosis ; 

 soris costa parum remotis solitariis nisi in auricula confluentibus ; indusio margine dentato ; 

 rbachi costis venulisque paleis lanceolatis brunneis instructis. — Simoda. Frond from 6 to 14 

 inches high ; pinnae 9 to 18 lines long. A remarkable species. 



Davallia Chinensis, ' Siuartz ; Hook. Sp. Fil. t. p. 187. Yokohama and Simoda. 



Osmunda Japonica, Thurib. Fl. Jap. p. 329. Simoda. This might be taken for a form of 0. 

 regalis, except that the sterile and fertile fronds are separate. 



MUSCI and HEPATIOE : By W. S. Sullivant. 



1. Hypnum Japonicum (n. sp.) : monoicum, lurido-virens, laxe caaspitosum ; caule ads cendente 

 fasciculatim diviso ; foliis confertis secundis late ovatis brevius obtusiusque acuminatis reticuli 

 densi cellulis minutis subquadratis, costa valida cum vel sub apice desinente ; perichaatii 

 polyphylli foliis lanceolato-attenuatis erectis obscure costatis ; capsula cylindracea erecta vel 

 erecto-cernua annulata ; operculo conico obtuso ; peristomio normali. — This species belongs to 

 the section Amblystegium of the Bryologia Europaea, and in general appearance is not unlike 

 Hypnum orthocladon and the larger forms of H. serpens, but is easily distinguished by its 

 secund leaves, with a much closer areolation, and distinctly dentate margins. 



2. Hypnum gracile, Br. Sch. This species is common in Ohio. 



3. Mnium radiatum, Wils. in Lond. Jour. Bot. 1848, p. 274. Belated to the Californian 

 Mnium Menziesii. 



4. Mnium Trichomanes, Mitten in Lond. Jour. Bot. 1856, ^>. 231. Intermediate between M. 

 cuspidatum and M. affine. 



5. Bartramia pomiformis, Hedw., var. crispa. 



6. Pogonatum tortile, Swartz. 



7. Biccia natans, Linn. 



8. Fegatella conica, Cor da. 



9. Azolla, ? Without fruit ; but appears to be the same as the Azolla Caroliniana, 



found in this country. 



