450 100. PiLicES. 



Roth. Clusters more marginal, often ultimately confluent. 

 In weU-grown plants tlie pinnules are suddenly widened to 

 their fiul extent just above their narrow stalklike base. 

 Sporules ivarUd. — y. C. Dickieana (Sim), pinnse usually over- 

 lapping, pinnules broad blunt emarginate, vein sndiny in the notch, 

 clusters scattered. Sporules warted. — S. C. alpina (Desv.) ; 

 frond bipinnate, pinnse ovate, pinmdes ovate deeply pinnatifid 

 with broadly and shortly linear segments partly cloven and 

 slightly toothed at the end, veins ending in the notch, E. B. 

 163. H. F. 24. Fronds much divided but compact and close. 

 — I have placed these plants under one species with much 

 doubt. — Rocks and walls, y. In a damp cave by the sea near 

 Aberdeen. 6. On a wall at Low Leyton, Essex. Teesdale. 

 Mr. J. Backhouse ! P. VU. Vni. E. S. I. 



2. C montdna (Link) ; fronds triangular tripinnate, pinnae and 

 pinnules spreading, lobes pinnatifid with linear notched segments, 

 — -ff. F. 25. S. 24. — Fronds in shape like those of Polypodium 

 Bobertianum, small, short, very finely divided. Lower pair of 

 pinnae much the largest ; their lower larger than their upper 

 pinnules. Stipe long, slender. Rhizome creeping extensively, 

 black. — ^Breadalbane and Grampian Mountains. P. VII. VIII. .'' 



S. 



Tribe III. Aspleniece. 



7. Athte'ittm Roth. Lady Fern. 



1. A. Filix-fcem'ina (Roth) ; frond lanceolate pinnate or pinna- 

 tifid, pinnae linear, pinnules linear-oblong deeply serrate or pin- 

 natifid. — H. F. 35. — a. A. rhoeticum (Roth) ; frond bipiimate, 

 pinnules toothed narrowly triangular-lanceolate convex remote 

 not connected toothed, upper ones minute confluent, clusters 

 ultimately confluent. iV. 245. A. canvexuml^&mm.. Pinnules 

 long, narrow, with deflexed edges, enclosing the clusters ; their 

 attachment broad ; segments gradually decreasing from the 

 base of pinnule. — p. A. Filix-famina (Roth) ; frond bipin- 

 nate, pinnules pinnatifid oblong-lanceolate bluntish flat remote 

 not connected, segments oblong- patent with lateral and ter- 

 minal sharp teeth. N. 237. Frond much divided dark green. 

 Pinnules much narrowed at their base. Clusters distinct. A. 

 latifolium (Bab.) is apparently only an extreme state of this. — 

 y. A. molle (Roth) ; frond pinnate, pinnules toothed oblong 

 blunt or slightly pointed flat remote all connected by wing of 

 midrib or lower ones distinct, segments ovate bidentate lowest 

 with 3 teeth uppermost with 1 tooth. N. 245. Frond scarcely 

 more than pinnate, bright green. Pinnules attached by a broad 

 decuirent base. Clusters distinct, in 2 rows. Sometimes 



