I-^ILIOES. (FERN FAMILY.) 



909 



Fk;. 433. 



Tip of frond of A«- 

 pleniuin Jiourgmi. 



Fm. 434. 



Pinna of Asple- 



niumTriclioman«!i 



1 diameters. 



12. ASPLEXIIJiri, L. Spleenwort. 



Sori oblong or linear, oblique. Indusium one- 

 sided, fixed by one edge to the inner side of the fer- 

 tile vein, opening inward (upward). Stipe continuous 

 with the root-stock — Tufted ferns, usually growing 

 in shady places. 



1. A. Bourg^sei, Boiss. If .05 to .15. Fronds 

 oblong-lanceolate, pinnate ; the short stipe and rachis 

 greenish-h'own, glabrous with exception of scattered, 

 membranous, veined chaff; pinnae oblong, obtuse, 

 sessile, somewhat decurrent, pinnatifid, with minute, 

 oblong, denticulate lobes — Clefts of rocks — Natural 

 bridge of Litany ; Amanus, and northward. 



2. A. Tricliomanes, L. 2^ .1 to .4, densely 

 tufted. Fronds linear-lanceolate, short, stipe and ra- 

 chis, darh^ polished hrowti, the latter with a crenulate, 

 winged margin ; pinnae nearly or quite sessile, obliquely 

 cuneate or truncate at base, roundish-oblong or elliptical, 

 unequal-sided, crenulate — Summer — Clefts of rocks 

 and walls ; common. 



3. A. Rutamuraria, L. 2f .05 to .15. Fronds 

 ovate, glabrous or glandular, 3-3-alternate-pinnate ; 

 long stipes and rachis greeny blackish at base ; the few 

 ultimate pinnules obovate, with wedge-shaped base, 

 and crenulate or denticulate apex — Summer and au- 

 tumn — Alpine summits of Sunnin and Makmel. 



4. A. Adiantiim-nigruiii, L. 11 Silver Fern. .2 to .4. Stipes 

 long, black, glossy, stout. Fronds glabrous, coriaceous, triangular- 

 lanceolate, acuminate, 2-3-pinnate; lobes of ultimate pinnules oblong, 

 cuneate at base, entire or dentate at apex — April to July - Shady 

 rocks; common in lower and middle mountain zones. 



Var. Virgilii, Boiss. ^NFore dissected than in type. 



5. A. septeutrionale, L. 2^ .1 to .2, tufted; root-stock short, 

 covered with tawny scales. Fronds on long, glabrous stipes, coriace- 

 ous, glabrous, forked into 2-5, linear, elongated, petiolulate, acute, 

 entire or sparingly incised-toothed lobes; sori linear, at length conflu- 

 ent, covering the whole lower surface of the lobe ; margin of indusium 

 entire — July — Clefts of rocks; Amanus, and northward. 



6. A. Filix-Fccniiiia, L. Lady Fern. 11 .G Fio. 435. 

 tol; root-stock thick. Stipe more or less covered 

 at base with dark-brown, scarious scales ; frond ob- 

 long, lanceolate, tapering at base and apex, bipin- 

 natisect; pinnje oblong, tapering; pinnules numer- 

 ous, oblong-lanceolate, lobes ovate, usually 3-1 

 toothed on each side toward tip; sori oval or rcni- 

 form; indusium fringed — July — Woods; Amanus. 



13. ASl'IDIUM, Sw. Shield Fehn. IajI.poi a pinnule of 



Son orbicular, in rows or scattered. Indusium iiiamcters. 



orbicular, peltate, fixed by umbilicate centre, free all around margin. 

 Stipe continuous with root-stock. 



