Polypodium.} FILICES. 553 
te spades! eee rks 32. — Stip. ravuae on very short 
rhizomes which nly a few dar e and stiff ovate long acuminate 
scalelets, short ale aad oe ree nears, 11 /2—5‘ 
1—2“, obtuse, the upper fourth or third suben and broadest, the 
rest autchid or cut to near the rhachis into eas aca or ovate 
lobules, gradually narrowing into the winged stem, naked, thick charta- 
ceous. Veins simple, slightly curved, terminating with a clavate apex, 
one to a segment. Sori confined to ‘ho subentire portion of the frond, 
oblong on the veinlets from their base to near the apex, adpressed to 
the costule and filling the under surface. — Sp. Fil. 1V, 174. — Synops. 
Fil. p. 323. — Xiphopteris serrulata, Kaulf. — X. Jamesonii, Hook. Second 
Cent. tab. 14. — Grammitis serrulata, Sw. — P. myosuroides, Sw. — P. mini- 
mum, Brack. Fil. U. 8. E. E. p. 5, pl. 1. — Exceptio sally a few of the upper 
segments are found soriferous. Sterile fronds are ober: throughout, 
Rare, on trees at heights of 3000—6000 ft. Hebregeesen Oahu! Eeka, Maui! 
Waialeale, Kauai! — This pretty little fern is seth the Andes from Mexico to Chili, 
in the W. Indies, Juan Fernandez, Mauritius, Aiahacibose’ and on the Guinea coast. e 
W. Indian fern has a rather different ae but Hooker's figure of Xiphopteris Jamesonii 
corresponds well with our form, only that the nerves are less spreading and somewhat 
arched in the latter. Nat name: Kihes. 
{ Chaetothecae. — Sporangia armed with 2—5 setae. Nos. 3—4. 
3. P. Hookeri, Brack. Fil. U. 8S. E. E. p. 4. — Rhizome e short and 
rather thick (1), the scales oes and thin, ue or lanceolate, ob - 
pale brown or yellow. Stip. crowded near the end of the dace 1/4—1‘ 
long, dark, ciliate with stiff eae reddish single-celled hairlets. 
Fron aitainice dark, ciliate or hispid, linear-lanceolate, 3—9' < 1/4—5/s’, 
acute or bluntish, entire, gradually narrowing at the base, occasionally 
ifid. Veins sissies or once or twice forking, ah the simple ones near 
the apex terminating with a swollen end, the others running out acutely. 
Sori dark brown, large, round or somewhat oblong, seated at the beginning 
of the upper branch near the bifurcation, forming two rows close to the 
midrib. Sporangia mostly echinate with 2 or 3 stiff purple setae near 
the apex and 1 or 2 near the base of the annulus. — Sp. Fil. IV, 171. — 
egg Fil. p. 319. — P. setigerum, Hook. & Arn. in Bot. Beech. p. 103, 
tab. 21. — Luerssen, Fil. Graeff. p. 100, 
® var rond subcoriaceous, less hispid with purplish hairs. Veins 
hidden. Sori rather oblong and often impressed, dorsal on the middle 
of the anterior branches, terminal on the apical ones, forming two rows 
midway between rib enn 
On trees in all islands, but common ; the variety from the highest parts of Molokai. 
are given as echinate, but the position of the sori with e yeinlets is not 
adverted to in the description. The Queensland, Bourbon and Philippine forms which 
