200 ASPLEXIUM, § EUASPLENIUM. 



191. A. (Euasplenium) strictum. Brack.; caudex short 

 thick erect, stipites 2-4 inches long lurid-green tufted, fronds 

 6-12 inches and more long membranaceous oljlong-lancco- 

 late tapering much below bipinnate, primary piniuc 1-1 5 inch 

 long rather distant horizontal shortly petiolate lanceolate or 

 from a broad cuneato-rhomboidal base lanceolate deeply 

 pinnatifid or generally again pinnate in the lower half, pin- 

 nules or lobes all cuneate superior basal ones the largest 

 3-4-lobed the rest bi-trifid or retuse at their truncated apex, 

 uppermost lobes entire rarely sulifalcate obtuse, veins forked 

 subflabellate in the broader lol^es or pinncE, sori rather small 

 linear-oblong 2-G on the disc of the pinnules and these some- 

 times diplazioid and on the narrow terminal ones quite da- 

 rcoid situated at the margin, involucres membranaceous 

 brown, rachis very ol)scurcly winged straight or subflexuose. 

 —Brack. Fil. U. S. Exp]. Exp. p. 168. t. 23. /. 1. Metten. 

 Asplen.p. 115. Aspl. patens, Hook, et Arn. Bot. Beech. Voy. 

 p. 106 {not p. 274, from Bonin, which is a var. of A. laser- 

 pitiifolium). 



Ilab. Sandwich Islands ; Oahu, Donglaa, Nuttall. Kanai, on open mountain 

 ridges, Brackcnridgc. Owhyhee, Nuttall {\. miiltifidum, Nutt. MS.). — A species 

 which Dr. Arnott and I had taken for the A. patens of Kaulfnss. Brackenridge 

 alludes to its affinity with A. rhizophyllum, Sm., and it is, ])erhaps, too near that 

 species, especially that form of it which has been called A. Macrcei, Hook, and 

 Grev., from the Sandwich Islands. 



192. A. (Euasplenium) rhizophyllum, Kze. ; caudex rather 

 stout ascendant or erect paleaceous at the summit with black 

 subulate scales, stipites 2-6 inches long tufted brown niargi- 

 nato-alate as well as the rachis, fronds 6-12 inches long 

 broad-lanceolate acuminated membranaceous attenuated be- 

 low (with distant small pinnes) dark green pinnato-pinnatifid 

 or bi-tripinnate, primary pinnae an inch long horizontal 

 deeply almost to the rachis pinnatifid or again pinnated in 

 the lower half, the upper half pinnatifid with linear monoso- 

 rous segments straight or curved rarely bifid, lower segments 

 or pinnules larger more cuneate and l)roader the lowest one 

 at the superior base largest and auriculiform bi-trisorous 

 sometimes deeply pinnatifid with linear segments (var. my- 

 riophyllum), veins solitary in each segment, sori 2-3 in the 

 disc of the larger basal pinnules quite dareoid in the narrow 

 segments, involucres pale membranaceous, "rachis elongated 

 and rooting at the apex.^' — (Normal and more simple form), 

 Kze. in Linnaa, ix. p. 71 {not Linn.). Pr. Tent. Pterid. 



