4 SCOLOPENDRIUM, § CAMPTOSORUS. 



subflabellate, sori short and in opposite pairs on the free 

 portion of the veins sparse generally solitary among the 

 anastomosing veins. — Schaffneria nigripes, Fee, Foug. 8me 

 Mem. p. 56. t. 17- Asplenium (Schaffneria) nigripes, Hook, in 

 Kew Gard. Misc. ix. p. 268. t. 9. 



Hab. Mexico, between Vera Cruz and Orizaba, Midler, Bchaffner. — The habit 

 of this little plant is very remarkable ; but as far as the fructification and venation 

 are concerned, it quite corresponds with Antigramme of authors, which I con- 

 sider a section of Scolopendrium rather than as forming a genus distinct from it. 



§ Camptosorus. — Veins anastomosing near the costa, free and forked at the 

 margin. Sori tisiially in opjwsite pairs, but more or less divaricating. 



7. S. (Camptosorus) rhizophyllum, Hook. ; rhizome small 

 erect or decumbent, stipites tufted 1-3 inches long green, 

 fronds a span and more long flaccid from a broad and deeply 

 cordate base with large rounded lobes gradually tapering to a 

 very long cordate slender almost filiform apex often prolife- 

 rous at the point, sori short divaricated. — Asplenium rhizo- 

 phyllum, Linn. Sp. PL p. 1536. Sw. Sijn. Ftl. p. 74. TVilld. 

 Sp. PL V. J). 305. Mich. Am. ii. p. 64. Hook. FiL Bor. 

 Am. ii. p. 262. Camptosorus, Link, FiL Hort. BeroL p. 83, 

 Fr. Tent. Pterid. p. 12\. t. A.f. 8. Hook. Gen. FiL t. 4.f. 8. 

 Exot. Ferns, t. 85 {excL syn. C. Sibiricus, Rupr.). C.rumici- 

 folius, Lk. FiL Hort. BeroL p. 83. Antigramme, /. S7n. Cat. 

 Cult. Ferns, p. 49. Moore. 



Hab. United States of America, as it would appear, widely dispersed, yet local ; 

 " New England to Wisconsin, and southward, rare " {Asa Gray). Our herbarium 

 possesses specimens from New York, Vermont, Schuyllkill, Wisconsin, Kentucky. 

 Pennsylvania; in British N. America, from Canada to the Saskatchawan, Gouldie, 

 Drunimond. — A very remarkable plant, which by means of copious plantlets pro- 

 duced from the long slender proliferous apices of the fronds, traverses a good deal 

 of ground, and is known in the United States by the name of the " Walking-leaf." 



8. S. (Camptosorus) Slbiricum, Hook. ; caudex small as- 

 cending, stipites 3-4 inches long slender tufted, fronds very 

 membranaceous flaccid, sterile ones short oblong-ovate acu- 

 minate, fertile ones 5-6 inches long from a lanceolate acute 

 base very long and caudately attenuated rooting at the apex, 

 sori rather short sometimes solitary. — Hook, in 2nd Cent, of 

 Ferns, t. 35 [where for " Hook. Sp. Fd. iii. ined.,'' read iv. 

 p. 4). Camptosorus Sibiricus, '^' Rupr. in Beitr.2. Pfianzenk. 

 d. Russ. m. p. 45." Ledeb. FL Ross. i\.p. 523. 



Hab. Siberia, River Angura, Steller. Kamtschatka, Georgi. Island of Tsus 

 Sima, Strait of Korea, Wilford, n. 790. — A rare and very little-known species. 

 Our collector, Mr. Wilford, secured only one specimen, which quite accords with 



