FLORA OF THE ISLAND OF HOKGKOXG. 429 
747. L\STR3 A podophjjUa, J. Sm.—Aspidium (Lastrea) jjodojjhyllum, Hook, in Jouru. Bot. aiiJ 
Kew Misc. vol. v. p. 236. t. l,~Aspidium Sieboldi, Van Houtte, Cat., Mett. Fil. Hort. Lips. t. 20. 
f. 1-4. — Pycnopteris Sieboldi, T. Moore. Hongkong; Japan.— v, v. Hort. Kcw. 
The genus Lastrea, as characterized by Presl, contains a very heterogeneoua mass of species, all agree- 
ing in having punctiform sori, seated on or below the apex of free veins, and furnished with a reniform in- 
dusium, the latter character distinguishing Lastrea from another esteiisiTe group {Polysticfium), the t^-pical 
species of which have an orbicular indusium, and are also known by their fronds being more coriaceous, 
rigid, and spinose than in Lastrea; unfortunately for the value of these charLUJters, there are speeiM 
possessing the general character of the fronds of Polj/stichum, but with reniform indusia, hence the form of 
the indusium proves of little value as a character whereby to distinguish Lastrea from Polystichum ; indeed 
the limits of the two genera cannot readilj' be defined ; the numerous species are however capable of being 
arranged in natural sections, characterised by their modes of vernation and other points of diflference, 
' which some Eiuthors have considered of sufRcient importance to constitute several new genera, the present 
species being typical of one, but which I do not adopt. Its nearest afUnity is with Lastrea atrata, J. Sm.i 
{Aspidium atratum, Wall.), and belongs to the sequence containing Lastrea FiUx-mas. 
748. Lastrea opaca, Hook. mss. Hongkong (Hance! Seemann!)j Shanghai (Tonncrre!); Macao 
(Vachel!). 
749. Lastrea decnrrens, J. Sm. En. Fil. Hort. Kcw. 1846. — Aspidinm decursive-pmnatum, 
Kunze. China {Herb. Lambert. 1834, J. Sm.) — v. v. Hort. Kew. ^ 
r 
750. Nephrolepis tuberosa, Presl, Pterid. p. 79. — Aspidium tuberosum, Bory, Willd. I.e. p. 
234. — Nephrodium edule, Don. Hongkong (Hance ! Seemann !) ; East Indies. — v. v. Hort. Kcw. 
751. Nephrolepis hlrsutula, Presl, 1. e. p. 79. — Aspidium Mrsutnlum, Sw., AA'illd. 1. c. p. 232. 
— Schk. Fil. t. 33. Hongkong {Hance! Seemann!) ; East Indies.— v. v. Hort. Kcw. 
Tribe Dicksokie.e, /. Sm. I. c. 
§ LIKBSJE^, 
753. ScHizoLOMA ensifolium, J. Sm. En. Fil. Philipp. I.e. p. i\^.—Linds(Ba ensifolia, llook. 
Sp. Fil. vol. i. p. 220.— Hook, et Grev. Ic. 1^1. t. 3. Hongkong (Hance !) ; Malayan Archipelago; 
Australia; East Indies. — v. v. Hort. Kew. 
753. ScHizoLOMA heterophyllmn, J. Sm. I.e. p. ^\4^.~Lindsaia heterophylla, Dry., Trans. Linn. 
Soc. vol. iii. t. 8. f. 1.— Hook. Sp. Fil. vol. i. p. 223. Hongkong (Hance! Seemann!); :\Ialayan 
Archipelago. 
The pinnffi of this species vary much in form, aiid in the venation being free or anastomosing, thus 
showing that the technical characters of Linds<:ea and ScJdzoloma, observed in their typical species, are 
not constant. 
754. Undsma flabeUulaia, Dry. I.e. t. 8. f. 2.~Hook, Sp. Fil. vol. i. p, 211. Hongkong 
(Hance! Seemann!). 
755. Odontosoria iermifolia, J. ^m.-DavaUh (§ Odontosoria) ienuifolia, Presl, Ptcrid. p. 129. 
Davallia tenuifolia, Sm., Hook. Sp. Fil. vol. i. p. im.^Stenoloma tenuifoHa, Fee. Hongkong (Hance ! 
Seemann !) ; very general throughout the tropics of the Eastern hemisphere, and in Brazil.-v. v. 
Hort Kew. 
