119 171 



number round the aërophore and at base of the costules and have here fully the 

 aspect of scales. These "scales" are, however, not true scales; under the micro- 

 scope they are seen to consist of an entangled mass of the long, brown fibrils, 

 probably brought together by mites and thus forming Acarodomatia, but not very 

 much resembling those common on the leaves of Tilia. — Very remarkable and 

 quite unique is the venation. Below the sinus extends to the costa a cartilagineous 

 membrane, which in dried specimens often is folded and form a keel quite as in 

 the preceding species; the pinnæ being incised scarcely to the middle the lower 

 4—6 pairs of veins run out to the membrane, and those coming from the same 

 side of the costule are united near the edge of the membrane into a common-vein 

 running along the membrane to the sinus (see fig. 23). — Other peculiarities of 

 the two species are the not deeply cut, stalked pinnæ and the subdistinct ter- 

 minal pinna. 



188. Dryopteris glandulosa (Desv.) C. Chr. comb, nov., non O. Ktze. ') 

 Syn. Polypodium (/landnlosiim Desv. Berl. Mag. 5: 317. 1811. 

 Goniopteris ubbreviata Presl, Tent. 183. 1836 (nomen). 

 Phegopteris abbreviata Mett. Pheg. nr. 45. 1858. 

 Phegopteris Pliimieri J. Sm. Bot. Voy. Herald 228. 1854. 

 Goniopteris rostrata Fée, 11 mém. 64 tab. 17 fig. 3. 1866 (bona!) 

 Nephrodiuiu brachyodon auctt. quoad pi. Ind. occ; Jenman, W. Ind. 



and Guiana Ferns 235. 

 Nephrodium dejectiim Jenman, Gard. Chron. III. 18: 640. 1895; W. Ind. 



and Guiana Ferns 241. 

 Dryopteris dejecta C. Chr. Ind. 261. 1905. 

 Type from the West-Indies without exact locality (Herb. Desvaux, Mus. Paris!). 

 A most distinct species, very well described by Mettenius and Jenman (loc. 

 cit.) and well figured by Fée. It can at once be distinguished from Ü. megalodus, 

 with which it often has been confounded, by its coriaceous texture, yellowish or 

 greyish underside, its falcate lobed, its simple not stellate hairs of the costæ beneath 

 and by the presence of aërophores and scale-like fibrils on the costæ beneath. 

 Further D. megalodus and related species have a terminal pinna like the lateral 

 ones, while the terminal pinna of D. glandulosa is hastate, i. e. below its broad 

 base and often confluent with it are to be found a pair of short, lateral pinnæ; 

 the next following pair of pinnæ are much larger. 



Rhizome 2—3 cm thick, ligneous, short-creeping, naked. Stipe often 60 — 80 

 cm long, stramineous, deeply sulcate above, glabrous. Lamina 30—60 long with 

 8—10 pairs of very remote (6 — 8 cm), opposite pinnæ, up to 25 cm long by 4 cm 

 broad, distinctly stalked with a prominent dark, acute or obtuse aërophore beneath. 



') D. glandulosa (Bl.) O. Ktze. = Aspidium glandulosum Bl. 1828 must subsequently be renamed. 

 I propose for it the new name Dryopteris raalayensis C. Chr. 



