9 
Allosorus ; and, as I possess specimens, which I have hitherto kept 
as species of Polypodium, but which I find difficult to characterize 
as different from Hypolepis repens, except in the sori not being 
quite at the margin, and therefore the crenules not so evidently 
indusiiform, I do not hesitate in removing Hypolepis from Pte- 
ridee, and placing it in Polypodiee, the species differing from 
Polypodium chiefly by the peculiar elongated rhizoma and (in 
most cases) by the evident reflexed crenules. 
4. Srrutuiopreris, Willd. 
1. S. Germanica, Wii/d. Onoclea Struthiopteris, Hort. Kew. 
2. 8. Pennsylvanica, Willd. 
Has. North America. Cultivated in 1823. 
5. Atrosorus, Bernh. 
1. A. crispus, Bernh. Pteris crispa, L.; Hort. Kew. Cryptogramma, R. Br. 
6. Nornotana, A. Br. 
1. N. tenera, Gil/.; Hook. Bot. Mag. t. 3055. 
Has. Chili. Received from Mr. D. Cameron in 1842. 
2. N. nivea, Desv. Pteris nivea, Sw. Syn. fil. t.1. £.2. N.incana, Presi, 
Relig. Haenck. t.1. f. 2. 
Has. Chili, Mexico, and Peru. Received in 1844 from J. Riley, Esq. 
3. N. trichomanoides, &.Br. Pteris trichomanoides, Linn. ; Schk. Crypt. t.99. 
Has. Jamaica. Received from the Royal Botanic Garden of Berlin in 
1844. 
4. N. : 
His Meio, and other parts of South America. Received in 1841 
from the Royal Botanic Garden of Berlin. 
5. N. lanuginosa, Desv. Acrostichum velleum, Hort. Kew. 
6. N. vestita, J. Sm. Cheilanthes vestita, Sm. ; Schk. Grypt. t. 124. 
Has. North America. Received in 1841 from the Royal Botanic Garden 
of Berlin. 
" os, we feeive in 1841 from the Royal Botanic Garden of 
Berlin. 
8. N. si : ichum sinuatum, Sm. 
ie Mee “~; nade 1841 from the Messrs. Loddiges. 
9. N. Marante, R. Br. Acrostichum Marante, Schh. Crypt. t.4. 
Has. South of Europe and Madeira. Received in 1843 from Dr. Welwitsch. 
10. N. Eckloniana, Kunze in Linnea, vol. x. p. 501. Link. En. Fil. Hort. 
Berol. p. 146. 
Has. Cap: dé Good Hope. Received in 1843 from Mr. D. Cameron. 
VOL. I. D 
