622 FILICES. [Lindsaya. 
segments subpinnate, with an oe marginal nerve. Sori submarginal, 
discreet, elongate or curved, those the sinus mostly confluent 
Es supported by 2—4 veins. Bee thin, often protruding beyond 
the rae cele: ene inside of it. 
| Halemanu ) 
& var. subbipinnata. — Pinnae substipitate, broader, cut throughout to 
base, the longest measuring 1‘ or more. Veins anastomosing only in the 
disk of the outer portion of the pinna, those of the pinnules free and 
simple. Sori small and narrow, mostly curved and often oblique to the 
segments, corresponding to their crenatures. 
With «. — Like Davallia Luzonica, Hook. Sp. Fil. I, tab. 60, the bipinnate form of 
D. pinnata, Cav. 
7+ var. — In a monstrous frond, sent by Mr. Knudsen, the upper pinnae 
exhibit the shape and character of L. falcata or L. erecta, the middle 
are obliquely lobed in cuneate-truncate segments, as is the case in L. 
Alexandri, and the lower much elongate pinnae are in their middle 
portion ee: cut to a bare rhachis into a hele cultrate and narrow 
cultrate-lanceolate pinnules, while the base and apex remain entire. 
is an analogon of the var. 6 of Polypodium pellucidum, and shows in its 
different parts the characters of nos. 2 or 3, nd 6, only the last 
species in a more ed form, the upper half of the base of the 
pinnules free from the rhachis. The most developed pinnules repeat the 
shape of the pinnae of L. falcata. 
6. L. Alexandri, sp. n. — Stip. 3—6‘ long, of a dark chocolate color, 
glossy, bearing at the salle a few dark and stiff lanceolate scales 
bri in no, 1. Frond thin chartaceous, 1'/2—3 ft. long, linear- tise 
elie. tapering at both ends, pinnate; the pinnatifd apex cut into cultrate 
and obcuneate segments; the lowest pinnae short deltoid and blunt. 
Rhachis fibrillose. Pinnae 30—40 on a side, the middle ones 2’ long 
and 3—5” deep at the base, sessile with an almost equilateral cuneate 
base, caudato-acuminate, and deeply cut by acute slits at angles of 10—30° 
(but often leaving a broad disk along the costa) into oblong and oblong- 
cuneate, obliquely truncate segments, ey on each side besides the 
notched end. Veins indistinct, mostly free, forking once or twice in each 
acetai the soriferous ones expanding at the apex and often anasto- 
i ceak even with the frondal margin or short of it. — Darker lines of 
sclerenchyma (spurious veins) descend from the sinus, but not quite to the 
midrib, and accompany the edges of the segments for some distance 
