POLYPODIUM, § IMIHGOPTERIS. 2G7 



ment, "as many as six sori on the inferior segments," all the 

 rachises rough and copiously setose with almost black flexu- 

 ose subulate scales. Hook, et Am. Bot. of Jieech. Foy. p. 

 105. Brack. Fil. U. S. Expl. Exp. p. IG. 



Hab. Hawaii. Forests in the Sandwich Islands, Uecchey, Brackenri(hje. — 

 Tliis very distinct Fern was recognized hy Dr. Arnott and myself as a new spe- 

 cies from the fragments of a specimen, and I have only received two lesser frag- 

 ments from my valued Hawaiian correspondent, Dr. Ilillebrand. From Uracken- 

 ridge's work, however, 1 have been able to improve the specific character. 



214. P. (Phegopteris) unident atuiUy mook. et Arn.; cau- 

 dex apparently subrepent short, stipes 1 h foot long strami- 

 neous subscabrous subpaleaceous the very base clothed with 

 long (almost 1 inch) dark-brown glossy scales, frond 11-2 

 feet and more long firm-menibranaceous deltoideo-ovate 

 acuminate glabrous bi- below tripinnate, lowest primary 

 pinnce subopposite 8-10 inches long half-ovate much acumi- 

 nated, those near the middle 4-5 inches long, secondary 

 pinnae 1 .j-2 inches long (lower ones especially) sessile oblong 

 acute or subobtuse rarely acuminate more or less decjjly pin- 

 natifid, segments oblong obtuse serrated chiefly towards the 

 apex, teeth subspinulose and often one tooth or serrature is 

 larger than the rest, veinlets once (or at the base of the pin- 

 nule twice) forked, sori solitary marginal at the base of 

 sinus, rachises stramineous glabrous. Hook, ct Arn. Bot. of 

 Beech. Voy.p. 105. Brack. Fil. U. S. Expl. Exp. p. I7. 



Ilab. Sandwich Islands, Oahu, Beechey, Brackenridge, Hawaii, Dr. Ilille- 

 brand. — This also was first described from fragments of specimens. I have received 

 perfect ones from Dr. Hillebrand, showing tiiat the base of the stipes is densely 

 paleaceous, and tlie sori invariably close to the margin, at the base of a sinus of 

 the segments or of the lobules. 



215. P. (Phegopteris) Sandvicense, Hook, et Arn.; cau- 

 dex ?, stipes (upper portion only seen) and rachises and costaj 

 beneath castaneous more or less furfuraceo-paleaceous, frond 

 membranaceous deltoid-ovate 2-4 feet or more long bipin- 

 nate tripinnate below, lower primary pinnee often a foot long 

 all of them broad ovato-oblong acuminate, pinnules sessile 

 1-2 inches long h-^ of an inch wide subovato-oblong oljtuse 

 or shortly acuminate deeply pinnatifid almost to the rachis 

 (less so in those of the upper portion of the frond), segments 

 oblong obtuse subpinnatifid or crcnato-dentate, veiidets 

 forked, sori 1-3 on a segment nearer the margin than the 

 costule. Hook, et Arn. Bot. of Beech. Voy.p. 105. Brack. 

 Fil. U. S. Expl. Exp. p. 1 7. 



