Sadleria.] FILICES. 581 
“Oy toward the costa. Veins forking close to their bases, the forks 
ting for the reception of the receptacle into a continuous series of arches 
next to the costa, which give off one or more free parallel rays toward 
the margin (nervy. Doodyae). Annulus of sporangium with 18—28 cells. 
Spores bilateral, ovoid-reniform to subglobose. — Erect, mostly arbores- 
cent ferns, with bipinnatifid to bipinnate fronds. Sterile fronds like the 
fertile ones, but without costal arches. Two large lateral fib. vas. ducts 
close to the sides of the ventral sulcus, 1 circular one at the head of 
it, and im the larger species 9—10 smaller ones which form an arch 
concentric with the back of the stipes 
According to the disposition of he: fib. vas. ducts the genus stands 
nearer to Blechnum than to Woodwardia, with which Mettenius has united 
it. Interrupted sori only occur near the apex, where pinn atifid pinnae 
pass into entire ones, and in the tripinnatifid variety of no. 4. The 
anastomosis for the soriferous arch is almost entirely formed by the 
anterior fork-branch of the vein, a short recurrent branch of the next 
upper being only observable in no. 4 
A Hawaiian genus, scarcely distinct from Blechnum. Nat. name: « Amamau>. 
Stipes paleaceous with soft scales at bra base only, sori sori long: 
Scales ovate or ovate-lanceclate, pa’ Ts" 
ong, the middle and basal ones ng aes peetinate : 1. S. Souleytiana. 
Scales linear-lanceolate, reddish; segments 1/2—1’ long, all entire 2. S. cyatheoides. 
Stipes and rhachis paleaceous econebines with stiff scales; sori 
shorter: 
Frond oe alana with entire linear-oblong segments; veins 
prominent: 3. S. pallida. 
Frond hipinnate, with oblique ovate crenate or ‘lobed pinnules; 
eins obscur 4. S. squarrosa. 
1. S. Souleytiana, Hillebr. — Trunk 3—5 ft. high, 8—10’ thick. Stip. 2—3 ft. 
ee: 1—11/2‘ thick at the base, deeply sulcate, pale, thickly clothed in the 
lower third with bright cinnamon-colored thin diaphanous ovate or lanceolate 
long-pointed scales of about 2‘ in length, furfuraceous or glabrate above. 
forked or seraie sianaks in the pectinate pinnules. Sori 
extending to near the apex, narrow, not filling the under face. — Spores 
unevenly margined. — Blechnum Souleytianum, Gaud. Bot. Bon. tab. 2 
and 134, 
in forests at elevations of 2000 ft.: Oahu! Pauoa; L Lanai! Frond larger than 
that of any other species. With the uppermost scales of the stipes generally a few narrow 
