420 99. FILICES. 



late united at the base pinnatifid with linear-oblong blunt lobes, 

 lowest pair of pinnae turned downwards and forwards the rest 

 upwards, clusters marginal. E. B. 2224. N. 115. Rhizome 

 nearly black, wiry, slightly scaly, creeping extensively. Fronds 

 triangular. Pinnae very acute, pointing upwards, rather hairy, 

 connected by their whole width with the rachis; lowest pair 

 quite distinct, with a minute stalk, standing forwards and point- 

 ing from the others. Roth (Fl. Germ. iii. 73) found an evanes- 

 cent indusium, which no other person appears to have seen. 

 Damp places, loving the spray of waterfalls. P. VII. IX. 



3. P. ? Dryopteris(L.) ; fronds ternate glabrous, divisions pin- 

 nate, pinnae pinnatifid blunt uppermost nearly entire, clusters 

 marginal. E. B. 616. N. 123. Rhizome black, wiry, creeping, 

 slightly scaly. Stalk slender, brittle. The three divisions of the 

 frond loosely spreading, the middle one rather the largest. Ver- 

 nation resembling 3 little balls on wires. Not at all glandular. 

 Shady mountainous places. P. VI. VII. 



4. P. ? Robertianum (Hoffm.) ; fronds triangular subternate 

 glandular-mealy, lower branches pinnate, pinnae pinnatifid blunt 

 uppermost nearly entire, clusters marginal. P. calcareum Sin., 

 E. B. 1525. N. 131 . More erect and rigid than the preceding, 

 always covered with very minute stalked glands giving a mealy 

 character to the surface. Frond scarcely 3-fid, the lower 

 branches being much smaller in proportion to the middle one ; 

 all the 3 erect, rigid. On broken limestone ground. P. VII. 

 VIII. E. 



3. WOODSIA R. Br. 



1. W. ilv ensis (R. Br.) ; frond lanceolate or oblong pinnate 

 hairy beneath. IV. 137 and 147. Our plants seem to me to 

 form only one species although they present three different appear- 

 ances, viz. a. ilvensis; fronds lanceolate, pinnae oblong deeply 

 lobed or pinnatifid blunt, lobes ovate crenate. W. ilvensis 

 E. B. S. 2616. In the continental plant the pinnae are narrowed 

 from the base and rather acute. j8. gracilis ; frond linear-lan- 

 ceolate, pinnae triangular pinnatifid, lobes 5 9 oval entire or the 

 lowest crenate. W. hyperborea E. B. 2023, Tausch ! Pol. hyp. 

 . gracile Wahl. y. alpina; fronds oblong, pinnae triangular- oval 

 lobed,, lobes 3 5 rounded very blunt. Pol. hyperboreum Wahl. 

 Acrost. alpinum Bolt. t. 42. A very small plant ; fronds 1 3 in. 

 long, hairy and scaly. Rhizome tufted. Exposed alpine 

 rocks, very rare. a. *Glyder-Fawr, N. Wales. Falcon Glints, 

 Teesdale, Durham. /3. Ben Lawers. Mr. DicJcson ! y. Ben 

 Lawers. Mr. W. Wilson \ Clogwyn y Garnedd, Snowdon. 

 P. VII. E. S. 



