632 FILICES. [Schizostege. 
shaped expansions of simple veins. Invol. marginal, reflected, interrupted, 
but closely contiguous, one to each sorus, scarious, oblong , almost square. 
Sporangia stipitate, with an vanes vertical ring. male tetraedrous, 
mostly angular, with 3 radiating lines. 
1. S. Lydgatei, Hillebr. — Caudex short. Stip. not much crowded, 
10—16‘ long, deeply furrowed, stramineous, glossy, paleaceous at the 
base with dark-brown shining linear scales of 5—6“ in length. Frond 
oo harsh and helddle’ when dry, pale, glabrous, ovate-lanceolate, 
. long and 8—20’ broad below, bipinnate at the base, cyatheoid. 
ines subopposite, subsessile, 8—10 on a side, besides a long terminal 
one, those of the lowest pair nearly 1 ft. long and each with 2 or 3 pe- 
dately deflected long pinnules on the lower side only, all others and the 
pinnules linear-lanceolate, 2—11/2‘ broad and deeply pinnatifid to near 
the Shock in oblong inititatonte obtuse lobes which are about 4“ broad, 
crenato-dentate near the sterile apex, otherwise entire in both fertile 
and sterile fronds. Veins (nerv. Eupteridis) once forking, the last ones 
only simple; the sterile ones free and ending in a prominent clavate 
apex, the branches of forked fertile ones united at their apices by intra- 
marginal veinlets, the simple fertile ones expanding in T shape. Sori 
5—10 on each side, their involucres 1—1'/2“ broad and nearly as deep, 
closely contiguous but disereet to the base, rarely several united com- 
pletely or partially. Sporangia large, the annulus broad, with 15—20 cells. 
Spores large and dark. — Fib. vas. fase. large omega-shaped, its ends 
extending into the anterior angles. — Cheilanthes, Baker, Synops. Fil. 
and Edit. p. 475. 
First Piet tas cd the author in a sterile state at a te oni pro near es head of so 
gulch of Waihee, W gion 9 nd subsequently found fertile by his son and J. Lydgate 
valley of Wailupe, Oahu 
P| fern of the habit ‘and ele of Pteris + eer more akin to Pteris . to opaaganosio 
nt vol 
ascert. 
by boiling a fragment in caustic potash, soaking in glycerine, and carefu 
with some sc 
to’ spr occur also occasi: gs P s 
thus in one specimen the fork-branches of the first upper vein unite again with their 
apices, forming elliptical aie and junctions of the first upper and lower vyeinlets of 
contiguous segments at the sinus, either directly in the manner of Goniopteris, or by 
short recurrent veinlets, are not rare. 
p a a ae are catadro and in fully developed ferti peathvateeen 
only the lowest pair have the first et ssieuaiiet nearest to the rhachis, wile p the 
and all segments the first inferior segment or vein rises from the rhachis 
of the order. 
two age near the base and a sien one only in the outer eae: without any serene 
