98 POLYPODIUM, § DRYNARIA. 



most to the rachis pinnatifid suddenly contracted at the base 

 which- forms a broad flexuose wing to the stipes, segments 

 3-6 inches long ^ an inch (if soriferous) to | inch broad if 

 destitute of sori, narrow-oblong obtuse or obtusely acumi- 

 nated entire or obscurely serrated, venation manifest, cos- 

 tules veniform, in the sterile segments united by transverse 

 veins forming 4-5 areoles again traversed by other veins 

 forming irregular areoles with included free veinlets, the 

 soriferous and narrower segments have a large central pri- 

 mary soriferous areole (the rest as in the sterile segments) so 

 that here the sori form a series exactly intermediate between 

 the costa and the margin. — Borrj, in Ann. Sc. Nat. ser. i. v. 5, 

 Atl. ?. 13 [very good as to general structure and arrangement 

 of the sort). Metten. Polyp, p. 120. t. S.f. 48 and 49, vena- 

 tion {certainly excl. Bl. Fil. Jav. p. 156. /. 66). 



Hab. Mauritius and Bourbon, Bory, Wallich, Carmichael. — I have never seen 

 this really well-marked species from any locality save the islands above men- 

 tioned ; but Bory suspects, and with reason, that it may very likely be found in 

 Madagascar. It has, as already observed, been confounded with P. propinquum, 

 Wall., or rather P. propinguiun with it. 



398. P. (Drynaria) diver sifolium, Br. ; caudex stout elon- 

 gated creeping clothed with ferruginous long-pointed scales, 

 fronds coriaceo-membranaceous of two kinds arranged in a 

 coronal tuft ; sterile ones a span or more long sessile oblongo- 

 ovate acuminate cordate at the base tawny-brown lobato- 

 pinnatifid, segments obtuse the upper ones narrower and 

 subacuminate; fertile ones 2-4 feet long long-stipitate pin- 

 nate, pinnse distant a span to a foot long linear-lanceolate 

 acuminate subpetiolate articulated upon the rachis with a 

 depression or obscure gland at the inferior base crenato-ser- 

 rate at the margin, costules veniform connected by an irre- 

 gular network forming however a long primary costal sorife- 

 rous areole, the lesser areoles rarely including free veinlets, 

 sori sensibly sunk in the frond with corresponding pustules 

 on the opposite surface arranged in a single series on each side 

 of and near to the costa. — Br. Frodr. p. 147. Hook. Gard. 

 Ferns, t. 5. Metten. Polyp, p. 121. Drynaria, J. Sm. Polyp. 

 Gaudichaudi, Bory, in Ann. Sc. Nat. ser. i. v. 5. p.4'Jl. t. 13. 

 Bl. Fil. Jav. p. 158. t. 67. MetteJi. Polyp, p. 120. t. 3./. 46 

 and 47 {venation). P. quercifolium, Willd. {fide Metten.) P. 

 glaucistipes, Wall. Cat. n. 297- Drynaria pinnata, Fee, Gen. 

 Fil. /;. 272. 



Hab. Tropical Australia, Brown, F. Mueller, All. Cunningham ; Blue Moun- 



