ATHYRIUM. ASPLENIUM. 425 



Tribe III. AspIenietE. 



8. Athyriiim Roth. Lady-fern. 



1 . A. Filix-famina (Roth) ; frond lanceolate pinnate or pinna- 

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

 natifid. — a. A. conveomm (Newm.) ; frond bipinnate, pinnules 

 toothed narrowly triangular-lanceolate convex remote not con- 

 nected toothed, upper ones minute confluent, clusters ultimately 

 confluent. N. 245. A. rhxticum Roth. Pinnules long, narrow, 

 with deflexed edges, inclosing the clusters; their attachment 

 broad ; segments gradually decreasing from the base of pinnule. 

 — 13. A. Filix-famina (Roth) ; frond bipinnate, pinnules pinna- 

 tifid oblong-lanceolate bluntish flat remote not connected, seg- 

 ments oblong patent with lateral and terminal sharp teeth. IV. 23/. 

 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 pin- 

 nate, pinnules toothed oblong blunt or slightly pointed flat re- 

 mote all connected by wing of midrib or lower ones distinct, 

 segments ovate bidentate lowest with 3 uppermost with 1 tooth. 

 N. 245. Frond scarcely more than pinnate, bright green. Pin- 

 nules attached by a broad decurrent base. Clusters distinct, in 

 2 rows. Sometimes (A. trijidum Roth?) the pinnules are much 

 less connected, moderately cut, have a narrow attachment, and 

 lobes with more but connivent teeth. — Wet shady places. P. 

 VI. VII. 



2. A. fontanum (Presl) ; frond linear-lanceolate bipinnate, 

 pinnse oblong-ovate, pinnules obovate-cuneate with few spinose- 

 mucronate teeth. — E. B. 2024.— Fronds about 4 in. long. This 

 plant does not associate well with the genus. — Formerly on 

 Amersham church, Bucks. Above Wyboum, Westmoreland, 

 Hudson. Between Tan y Bwlch and Tremadoc, Merionethshire. 

 Ashford, Hants. P. VI.— IX. E. 



9. AsPLENiTJM Linn. Spleenwort. 



* Ultimate subdivisions with a distinct midvein. 

 AsPLENiuM Newm. 



1. A. lanceolatum (Huds.); fronds lanceolate bipinnate, pin- 

 nules ovate deeply and sharply toothed or lobed, clusters short 

 nearly marginal. — E. B. 240. N. 249. — Fronds sometimes nearly 

 linear and simply pinnate, always narrowed at the base. Clus- 

 ters oblong, ultimately rather confluent into roundish masses. — 

 Rocks and walls, rather rare. P. VI. — IX. E. I. 



2. ? A. acutum (Bory) ; fronds long-triangular repeatedly di- 



