33 
decumbent. Fronds 1 to 1} feet high, rachis strigose, paleaceous, the 
lower pinne small, entire. It is Pol/ypodium decursive-pinnatum, Hort. Ang. 
Has. China. Received from Mr. D. Cameron in 1841. | 
Oss. My first knowledge of this fern was from a specimen 
presented to me in 1834, by the late A. B. Lambert, Esq., who 
had received it amongst a collection of dried plants from China. 
In 1841 I observed it in a living state in the Birmingham 
Botanic Garden, but have not learned by whom it was introduced 
into this country. 
On referring to my observations under the tribe Aspidiee, 
and also under the genera Zastrea and Nephrodium, in the 4th 
vol. of the ‘Journal of Botany’, it will be seen that I have 
noticed the difficulty that sometimes occurs in determining 
whether certain species belong to <Aspidiee or to Polypodiee, 
the presence or absence of an indusium being the technical 
distinction; but, on account of the small size and fugacious 
nature of that organ, its absence is not always a proper test to 
rely upon. ‘This is peculiarly the case with the present species ; 
for, on examining specimens in herbaria, it will, without hesi- 
tation, be referred to the tribe Polypodiee; yet, on carefully 
viewing it in its nascent state, a small ciliate indusium is 
observable, which is soon concealed by the enlargement of the 
sporangia. 
2. L. Thelypteris, Pres?; Sw.; Hort. Kew. 
8. L. noviboracensis, Pres? ; Sw.; Hort. Kew.; 
4. L. Oreopteris, Pres! ; Sw.; Hort. Kew. 
5. L. chrysoloba, Pres?. Aspidium chrysolobum, Link, 
Has. Brazil. Received from the JJessrs. Loddiges in 1841. 
6. L. vestita, J. Sm. Polypodium vestitum, Radd. Bras. Fil. t.36. 00 
Has. Brazil. Received from the Messrs. Loddiges m 1845. 00 
7. L. contermina, Pres/. Aspidium conterminum, Wié/d. Bit) 
Has. West Indies and many parts of tropical America. Raised in 1835. 
8. L. invisa, Presi; Sw. Miia 
Has. Jamaica. Cultivated in 1830. 
9. L. patens, Presi; Sw.; Hort. Kew. 
10. L. Filix-mas, Pres/; Sw.; Hort. Kew. 
11. L. marginalis, Pres/? Sw.; Hort. Kew. 
12. L. elongata, Presi; Sw.; Hort. Kew. 
18. L. cristata, Pres? ; Sw.; Hort. Kew. 
14, L. intermedia, Presl ; Willd. 
Has. North America. Cultivated in 1838. 
15. L. spinulosa, Pres’; Sw.; Hort. Kew. 
16. L. dilatata, Pres?; Sw.; Hort. Kew. 
