91 



costules manifest straight extending to the margin, venation 

 very obscure but ajiparently as in the preceding species, sori 

 large copious forming invariably a single series rather nearer 

 the costa than the margin. 



Ilab. Khasya and Assam, Mrs. Mack, Griffith. — The almost invariably altor- 

 nate and petioled and narrow-lanceolate pinnae, cuneato-attenuate at the base, 

 and drawn out at the apex into a singularly elonu;ated and narrow jjoint, would 

 suggest that this species was very distinct from P. capitellalum, and these charac- 

 ters are very constant in all my specimens, and they seem to he both common in 

 Assam and Khasya, yet the diti'erences are rather of comparison than of struc- 

 ture. If this and the preceding and following are really distinct as species, they 

 are very closely allied to each other. 



386. P. (Phymatodes) Himalnyense, Hook. ; caudex creep- 

 ing clothed with bright ferruginous hair-like scales, sti|)ites a 

 span to 1 foot and more long, fronds 1-H foot long thin- 

 membranaceous and sometimes pubescent or even subto- 

 mentose glabrous subcoriaceous in age pinnated, pimiic almost 

 invariably opposite sessile in distant pairs 5-8-9 inches long 

 by 1 h-2 inches broad from an obtuse base elliptical-ol)long 

 finely and long-cordately acuminated entire but with a very 

 distinct membranous margin, costules manifest cotniected by 

 transverse veins forming areoles of which one or all are sori- 

 ferous, these areoles are filled up with a network of lesser 

 areoles which have free included veinlets, sori often large 

 1-2 in the primary areoles hence they are 1-2-serial between 

 each pair of costules and 3-4-serial in a direction parallel 

 with the costa. — P. venustum, JVa/l. Cat. w. 305, not of Desv. 



Ilab. Nepal, Wallich ; Boutam, Grijrth, Booth (ah. 7 bOO (eei) ; Sikkim, IIooAer 

 fil. and Thomson ; Khasya, Simons. — This Fern has almost invana})ly opposite 

 pairs of pinnae, sometimes quite membranaceous and pubescent in age, glabrous 

 and subcoriaceous, the sori vary, 1-2 biseriate between the costules, sometimes 

 there is oidy one series parallel with the costa, sometimes 3-4 : in general the 

 fewer the sori the larger they are. 



387- P. (Phymatodes) /eio?-/«*row. Wall. ; caudex very thick 

 creeping paleaceous with ovate appressed deciduous ])eltate 

 scales, stipites I5 and more feet long stout, fronds ample 

 suljcoriaceo-membranous glabrous 2-3 feet long oblong or 

 oblong-ovate pinnated, pinnae 10-12-30 erecto-])atent 8-12 

 inches and more long oblongo-lanceolate much and very finely 

 acuminated caneate and slightly petioled superior ones ses- 

 sile and subdecurrent terminal one very long the margins 

 entire, venation manifest uniform, costules scarcely distinct 

 from the veins but they do anastomose so as to form large 

 costal soriferous areoles and a less imperfect series near the 



