4 



r 



2oar, side view. / E. mediocre, diametro duplo longiore; semicellu- 

 lis pyramidalibus, basi dilatatis utroque margine lateral! semel sinii- 

 atis, in lobnm polare rectum tnmcatum attenuatis; apice crenato-ro- 

 tundatis; lobo polari uno et lobo basali duobus vel tribus tumoribus 



instructo; cytiodermate subtillissirao punctate. Diam. et lat. .0013", 

 long. .0026". 



Hab. Ponds near Bethlehem, Pa. 



DociDiUM spiNULosuM, ;i. sp. (Plate VI, Fig. 2 1, a semicell.) 

 D. valdidum spinulosum subcylindricum undulatum octies — decies 

 longius quam latius, medio valde constrictum; semicellularum stric- 

 turis margme 3-4 plus minus prominentibus, modice attenuatis ; cy- 

 tiodermate dense spinifero ; spinulis apicis rotundatis duplo majori- 

 bus aliis. Diam. .0016" — .0018". 



Hab. Pond, Dennisville, N. J., July, 1880. 



Fleurotaenutm nodidosum, Breb., Docidium hirsufum, Bailey, and 

 D. nodosum, Bailey, have features in common with this form. I 

 separate it because of the armor of spines with which it is clothed. 

 These are not hairs— not gelatinous contractions, but decided spines, 

 and those of the ends of the cells are longer and stronger than those 

 on the body of the cell. 



2. New or Little-Known Ferns of the United States. No. 9. 



28. Cystopteris MONTANA, Bernh.— When I had occasion 

 to describe this fern in the "Ferns of N. America" it had nbt 

 been found anywhere in the United States, the American range 

 being from Labrador to the Rocky .Mountains of British America. 

 In Rothrock's report I. ventured to say that it might possibly occur 

 in California or Colorado. . Last summer it was found in Colorado 

 by Mr. F. S. Brandegee, on the Mt. Antero Spur of the Sawatch 

 Range, at 10,400 feet above the sea. Mr. Brandegee writes that 



two colonies of it grow there twenty feet apart in damp moss about 

 the roots of Abies EngeJma7inir The fern has a very slender creep- 

 ing rootstock, and the scattered fronds are from three to five inches 

 long, broadly ovate-pentagonal in outline, and very delicately three to 

 four tunes pinnate. The species occurs in the mountains of Europe, 

 from Scotland and Norway to the Appenines and the Carpathians 



29. AspiDiUM ACULEATUM, var. PROLiFERUM, Wolhiston {sub 

 Folysticho a7igidari). This is the most delicate and finely divided 

 form of Uie species; a large frond of it is figured on plate it 

 of Moore s Nature-printed Ferns." The character given by Moore 

 reads thus : " Fronds lanceolate, lax, bi- or tri-pinnate; pinnules nar- 

 row, attenuated, distinctly stalked, usually deeply lobed with the 

 lobes widely separated ; proliferous on the rachis." This form has 

 been found in two or three places in England, and is very common 

 in cultivation.^ Not long ago it was sent me from Chicago marked 



Cahfornian. I learn that it was found in company with a nar- 

 row form of the less divided var. lobatum by Mrs. A. E. Kent, of San 

 Rafael, who writes that 'it is very abundant in the southern part of 

 California, and is commonly called " San Diego fern " It is some- 

 what strange that none of the San Diego botanists has sent it here ■ 

 but now that It IS reported it is to be hoped they will search for it' 



