■WOODSIA. LASTREA. 
409 
iiidiisium, which no other person a])pears to have seen, and tliere- 
forc referred this and the following; to Polystichum. Newman 
places them in Lastrea. — Damj) places, loving the spray of water- 
falls. I’.YIl.— IX. 
0. P.l Dryopteris {h.); fronds ternate glabrous divisions jiin- 
nate, i)iiin8c pinnatifid ohtiise the uppermost nearly entire, sori 
marginal. — E. B. (il(i. N. li'l. — llhizoma 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 0 little balls on wires. Not at all glandular. — 
Shady mountainous places. P. VI. VII. 
4. P.? calcareum {Sm.); fronds triangular subteniate glandu- 
lar-mealy : lower branches pinnate, piniuE j)innatitid obtuse the 
uppermost nearly entire, sori marginal. — E. B. 1525. N. l.'il. 
P. Robertianum (llofim.) Koch. — Very different in habit from the 
preceding and always covered with very minute stalked glands 
giving a mealy character to the surface. Frond not so decidedly 
3-fid, the lower branches being much smaller in proportion to the 
middle one ; all the 3 erect, rigid. — On e.vposed mountain heaths 
or woods in limestone districts. P. VII. VIII. E. 
3. WooDSiA R. Br. 
1. W. ilvensis (R. Br.); frond lanceolate or oblong pinnate 
hairy beneath. — N. 134 and 147. — Our plants apj)ear to me to 
form only one si)ecies although they present 3 different apj)ear- 
ances, viz. — a. iloensis ; 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 narrow'ed 
from the base and rather acute. — (3. gracilis ; frond linear-lan- 
ceolate, pinnae triangular pinnatifid, lobes 5 — 9 oval entire or the 
lowest crenate. IF. Ayyjer5oreaE.B.2023,Tausch ! Pol.hyp.^.gra- 
cjVeWahl. — y. alpina ; fronds oblong, pinnae triangular-oval lobed, 
lobes 3 — 5 rounded very blunt. Pol. hyperboreum Wahl. Acrost. 
alpinum Bolt. 42. — A very small plant ; fronds 1 — 3 in. long, hairy 
and scaly. Rhizoma tufted. — Exposed alpine rocks, very rare. 
a. Glyder-Fawr, N. Wales. Falcon Clints, Teesdale, Durham. 
Ben Law’ers. Mr. Dickson \ y. Ben Lawers. Mr. W. Wilsonl 
I have not seen the plant from Clogwyn y Garnedd nor Clova. 
P. VII. E. S. 
Tribe II. Aspidiece. 
4. Lastrea Presl. 
I. L. Thelypteris (Presl) ; fronds pinnate, pinnae linear-lanceo- 
late pinnatifid slightly downy but without glands : lobes oblong 
with revolute edges, sori submarginal . — Aspidium Sm. N. 183. — 
T 
