456 100. PiLicBS. 



Tribe II. Aspidiea. 



4. Lab'tkba Presl. 



* Lateral veins simple oi- forked. Clusters on the simple veins or 

 either or both branches. 



1. Z. Thelyp'teris (Presl); rhizome slender far-oreeping, 

 fronds pinnate, pinnae linear-lanceolate pinnatifid slightly downy 

 but without glands, lobes oblong, clusters submarginal. — S. F. 

 13. iV. 183. — Fronds lanceolate ; earlier barren with flat lobes ; 

 later fertile with revolute-edged lobes ; 2 or 3 lowest pairs of 

 pinnse decreasing in size. Lateral veins alternate, forked, 

 extending to the edge. Clusters at length confluent, midway 

 between the midrib and edge. Height 6 — 8 inches. — Marshy 

 and boggy places. P. VII. VIII. Marsh^Fern. E. S. I, 



2. X. Oreo^'iOTS (Presl) ; rhizome thick short, fronds pinnate, 

 pinnse linear-lanceolate pinnatifid glandular beneath gradually 

 decreasing from about the middle of the frond to near the root, 

 lobes oblong flat, clusters marginal. — H. F. 14. E. B. 1019. 

 N. 187. — Fronds remarkably narrowed downwards, rising in a 

 circle from a tufted rhizome, fragrant when bruised. Lobes 

 blunt, entire ; lateral Teias simple or forked. Height 2 — 3 feet. 

 Indusium often scarcely distinguishable. — Mountain heaths. 

 P. Vn. Sweet Mountain-Fern. E. S. I. 



** Lateral veins branched orforlcsd. Chister upon the first upper 

 lateral veinlet. 



3. L. Filix-mas (Presl) ; fronds lanceolate subbipinnate, pinnse 

 linear-lanceolate lowermost pair rather smaller than the second, 

 pinnules oblong blunt or acutish serrate (not spinulose) attached 

 by their whole width or often connected below, clusters near the 

 midvein. — F. B. 1458. N. 198. — Fronds only slightly nar- 

 rowed downwards and the lowest pinna of considerable size, 

 rising in a circle from a tufted rhizome. Stipe and rachis 

 nearly glabrous, yellow, or densely clothed with purple scales. 

 Indusium very persistent, convex, with no marginal glands. 

 Height 2 — 4 ft. — a; pinnules crowded linear-oblong blunt 

 slightly confluent broad-based adpressed-serrate.^ — ^. L. Borreri 

 (Newm.) ; stipe and rachis very scaly, pinnules truncate sub- 

 entire at the sides. — y. L. affinis (Fiscn.) ; pinnules less crowded 

 longer acutish narrow and often slightly auricled at their base, 

 teeth patent lower ones notched. Var. incisa Moore. — 8. L. 

 dbbreviata (DO.) ; clusters near the base of the confluent 



