ASPLENIim. 451 



(A. trifidum Roth P) the pinnules are much less connected, 

 moderately cut, have a narrow attachment, and lohes with 

 more hut connirent teeth. — There are innumerahle subvarieties. 

 —Wet shady places. P. VI. VH. E. S. I. 



8. Aspee'ihum Linn. Spleenwort. 



• Ultimate subdivisions with a distinct midvein. 

 AsPLBNiUM Newm. 



1. A. fontdnum (Presl) ; frond linear-lanceolate bipinnate, 

 pinnae oblong-ovatejjinules obovate-cuneate with few spinous- 

 mucronate teeth. — E. B. 2024. H. F. 34. — Fronds about 4 in. 

 long. — A very doubtful native. Stations want confirmation, to 

 see if it was planted. Formerly on Amersham Church, Bucks ! 

 Wyboum, Westm. Hudson. Northumberland. J. Backhouse. 

 Tan y Bwlch and Tremadoc, Merionethshire. Ashford, Hants ! 

 P. VI.— IX. E. 



2. A. lanceoldtum (Huds.) ; fronds lanceolate bipinnate, pin- 

 nules obovate deeply and sharply toothed or lobed, clusters short 

 nearljr margiaal.— ^. B. 240. H. F. 32. iV. 249.— Fronds 

 sometimes nearly linear and simply pinnate, always narrowed 

 at the base. Clusters oblong, ultimately rather confluent into 

 roundish masses. — Bocks and walls, rather rare. P. VT. — IX. 



E.I. 



3. A. Adiantum-nigrum (L.) ; fronds mate-triangular or tri- 

 angular-prolonged twice or thrice pinnate, pinnse and pinnules 

 triangular sharply toothed, clusters long central. — E. B. 1960. 

 N. 225. — Clusters 2 or 3 times as long as in the preceding, 

 placed near the midrib and ultimately confluent in oblong masses 

 often covering the whole under surface of the pinnule. — a; 

 fronds about as long as the stipe ovate-triangular, pinnaa and 

 pinnules triangular-prolonged, ultimate subdivisions blunt. — ^. 

 A. Serpentini (Tausch) ; pinnules triangular very broad, lobes 

 ovate blunt. — y. A. acutum (Bory) ; fronds much shorter than 

 the stipe triangular-prolonged, pinn» and pinnules lanceolate- 

 attenuate, ultimate subdivisions very acute. W. 231. — Rocks 

 and walls. /3. " Serpentine rocks of Cabrach, Aberdeenshire." 

 T. Moore, y. South-west of Ireland. P. VI. — IX. Black 

 Spleenuiort. E. S. I. 



4. A. Trichom'anes (L.) ; frond linear pinnate, pinnae roundish- 

 ovate crenate, veins forked below the clusters. — E. B. 6i7Q. H. 

 F. 29. N. 285. — Raohis black, keeled beneath. Pinnae scarcely 

 oblique ; both edges rounded and crenate except at the base, 

 upper often bluntly auricled below. — ^. A. anceps (Sol. ?) ; 



