188 ASIM-ENUM, § ErASPLKNH'M. 



Milde. A. nigrum, Bernh. A. luridum, Salish. A. Capense, 

 L. [fide Moore). Taracliia, Pr. — Var. /3. acnfinn, PoUin ; 

 piniiic pinnules and segments narrower often linear acute or 

 acuminate. Moore. Brit. Ferns Nat. Print, t. 37. A. acutum, 

 Borij, in U illd. Sjj. PI. v. p. S4'J. A. prodnctum, Lowe, 

 Trans. Ctnnbr. Phil. Soc. vi. p. 524. — A'ar. <y. obtusum, Moore ; 

 pinnules and lobes very broad more acutely dentate. A. Ad. 

 nigr. V. Capense, Schlecht. Adumbr. Fit. Cap. p. 31. t. 18 

 [excellent). A. obtusum. Kit. JlV/d. Sp. PL v. p. 341. A. 

 cuneifolium, Vis. Fl. Ital. Fragm. p. IG. t. 18. A. Serpentiui, 

 Tuusch. (nut Henfl. Asp/. Eiirop. p. >^\. t. \, 2. Mr. Moore 

 refers liitlier, A. tissum, Jfeitim., A. Forsteri and A. novum, 

 ^'«(//., A. incisum, Opiz., A. multicaule, Sclioltz., and A. 

 tabulare, Schrad. — Var. B. Gaudiihaudiunvm, Hook.; fronds 

 firm-coriaceous very opaque brown when dry ovato-laiiceolate 

 acuminate subcaudate tripinnate, primary pinnae petiolate 

 lanceolate, secondary j)innac and pinnules remote oblong or 

 linear-oblong obtuse the margin sharply pinnatifido-serrate, 

 veins erecto-parallel, sori copious on all the pinna) and pin- 

 nules parallel with the rachis confluent, involucres oblong 

 brown often so close as to be imbricating, the margin slightly 

 erose, all the rachises destitute of wing. — A. patens, Gaiid. 

 in Freyc. Voy. p. .320. A. Adian turn -nigrum. Brack, in Fit. 

 U. S. Expl. Exp. p. 165. Meiten. A.yj/en. p. 144. 



Ilab. a, (8, 7. Throughout Europe, Greece, and Northern Asia ; Turkey, tlie 

 sliores and island>of the Mediterranean, N. and S. Africa, Madeira, the Canaries, 

 Azores, Cape de Verd Islands, St. Helena, Abyssinia, Svhimjjer, w. GG9 and llioC. 

 Northern India, Afghanistan, Mussoorie {Baron), Kashmire and Simla, Grijfith, 

 Edgworth, Hook. fil. and Thomson. Mascaren Islands, Bory. Java, Blame. — In 

 the new world Virginia is given on the authority of a specimen in the herbarium 

 of the British Museum (Moore), but it is nowhere recorded in the Floras of the 

 United States (except where the /I. montanum of Willd. has been mistaken for 

 it), and " Portorico, Herb. Willd." (Moore). — Var. S. Mouiia Koa and other 

 mountains. Sandwich Islands, Gaudichaud, Douglas, n. 55, Bravkenridge, elev. 

 8-10,000 feet. — Extended as is the geographical distriiiution of this well-known 

 English Fern, I have never seen any s|)ecimens from either N. or S. America. 

 Those two localities al)ove given rest on the authority of tlie IJaidisian and Will- 

 deno\ian Herl)arium. Nor have 1 seen any specimens from Java or from the 

 Mascaren Islands. I cannot join Mettenius in recording the numerous varieties 

 and subvarieties " ab Henfler (I.e.) exposita;." Those I adopt from Moore satis- 

 factorily include the ordinary forms found in England, including the narrow- 

 segmented state of Bory's A. acuhmi and the broad variety denominated A. 

 obtv-sum by Kitaibel. The broadest and the most peculiar form is gathered by 

 Jlr. Milne on Table Mountain at the Cape, but the several varieties are equally, 

 as in Europe, natives of the Cape. Of my var. S (I'audichaudinnum I have long 

 felt, and still feel, doubtful v\betherthis should be referred Xo\\w Js})l. Adiantum- 

 uigrum, or whether it should constitute a distinct species: the riitlerence is more 

 in aspect than it is easy to describe in words. It is of a much thicker and more 



