Asplenium.| FILICES. 591 
= var. myriophyllum. — Pinnules again deeply cut into linear segments, 
and sometimes one or more on each side pinnate, besides the basal ones, 
thus approaching A. myriophyllum, Presl. 
aha (Kn 
rious feature in many Kauai ese of this and the preceding var. is 2 
development of re Seong indusium on ventral face of the frond, corresponding 
a sorus on the dorsal face, els in su ak case is generally sterile. Particularly fins 
dareoid sori pact such compan 
A. varians, Hook. ‘ Gres Ie. Fil. tab. 172. — Stip. tufted on a 
very short root-stock, with a few short capillary semitransparent reddish 
scales at the base, otherwise glabrous, slender, green, 8/4—11/2/ long. 
Frond herbaceous, p een, oblong to lanceolate, not narrowing at the 
base, 1!/,—3/ >< 1/2—8/4', bipinnate with a pinnatifid apex and 7—8 pin- 
nae on a side. Pinnae stipitate (1), patent, rhomboidal, obtuse to ob- 
liquely lanceolate in outline, and cut at acute angles near the base into 
2 or 3 cuneate ew truncate pinnules or segments, which are 4—6-toothed 
t the apex or cut again into 2 or 3 truncate segments. Veins and sori 
Naina the ue acute at both ends, very delicate, opening irregularly. 
Spores smooth. — Hook. Sp. Fil. III, 192. — Synops. Fil. p. 216. 
Maui! (Baldwin). — Known from India, Ceylon and S$. Africa 
Group of A. Kaulfussii. Nos, 9—14. 
The three following species are closely connected and cannot without violence be torn 
from each other to be separately joined to geographically remote “ orms. bad ave in 
common a short and thick prostrate rooting rhizome with green stipites 
the end, which are covered at their bases only with few short and pais pevaee stiff 
i - 
nation in nearly a straight yo or in the broadest pinnae of no. 9 the 
deflect to angles of 50° and even 60°. Together with ses derivative forms of nos. 12— u 
they constitute a group which he its totality is unknown elsewhe’ 
For these reasons I deem myself bound to keep these shane species, which in turn have 
— a superficial view one or another o: above named, differ from them in various 
ways. 
To unite the six following oo in = did not seem advisable on account of the 
— the Pregeganis Bee es 
great diversity of the extreme forms on one hand, and 
until now leaves some gaps yet 9 the eile of forms. Should such a step, however, 
e nece i ture, the name 4 ssii, Schl., which was substituted for 
the older but untenable one A. protensum, Kaulf., would have the precedence. 
€ fo of no. approach most cl to A. obtusatum, Forst., or rather to 
varieties A. obliquum and lucidum; disti e characte the scales, 
the nervature, and ent in the paler color. The scales in A. 0b um 
aid indeed uliar, « , pointed out by Sir i sparent, 
cellate, as if the cell-membrane had os te aoe the t ebony and smooth net- 
tary remaining visible to the naked & e cells are quite empty, have no contents 
at all, and their membranes, where po paves transmit light without hindrance 
