I’OLYSTICHUM. 
411 
narrow iittaohinciit. Stipes short, scaly. Covered with minute 
stalked glands. Height 1 — 2 feet.— Ingleborough, Arnside Knot, 
and near Settle. P. VII. VIII. E. 
fi. L. spinulosa (Presl); fronds linear-laneeolate bipinnate, 
))iniiules oblong inciso-|)iuuatilid, segments serrate .s/jw/ose-nmero- 
nate, indusium ))ersistent without marginal stalked glands, stipes 
clothed with broad roundish concolorous scales. — Aspidium Sm., 
L. spinosa Is'. 20.4. — Fronds nearly erect ; the lowest pinnae 
equalling those that follow. (See A. N. H. xv. 322.) — Marshy 
plaees and wet woods. P. VIII. IX. 
/. L. dilatata (Presl); frond ovate-lanceolate bipinnate, pin- 
mdes pinnate or pinnatifid, segments serrate spinose-mucronate, 
indusium with marginal stalked glands, stipes clothed with long 
pointed scales with a dark centre and diaphanous margin . — 
Aspidimn Sm., L. multifiora N. 215. — Fronds arched, often 
drooping, convex ; the lowest pinnae shorter than the following. 
Fronds of young or starved plants often deltoid, of older and 
jrerfect ones never. — Woods, banks, &c. P. VIII. IX. 
8. L. Fosnisecii ; frond triangular bipinnate, pinnules pinnate 
or pimiatifid, segments serrate spinose-mucronate, indusium 
jagged at the edge, stipes clothed with long narrow laciniated 
concolorous scales. — Nephroihum Fccnisecii Lowe ! L. recurva 
N. 225. — Frond elongate-triangular concave above ; the lower 
pinnae much the largest. A smaller plant than the two pre- 
ceding. — Damp ])laces. P. VIII. IX. 
5. PoLYSTICHUM Roth. 
1. P. Lonchitis (Roth); fronds rigid linear simply pinnate, 
pinnae not lobed serrate spinous their base auricled above oblique 
below. — N. 163. Aspidium Sm., E. B. /97. Stipes verj' short. 
Fronds narrow very rigid and leathery. Pinnae overlapping and 
twisted (most in the Irish, much less so in the Welsh plant), 
lower ones usually auricled both above and below. — A'oung and 
simply pinnate fronds of the next species are often distinguished 
from this with difficult}-. — Alpine rocks. P. VII. 
2. P. aculeatum (Roth) ; fronds rigid linear or lanceolate bi- 
pinnate, pinnules obliquely decurrent acute. — N. 169. Aspidium 
aculeatum and A. lobatum Sm. — Stipes usually short. First 
upper pinnule of each pinna longer than the others, its lower 
side (next the main rachis) usually nearly straight, its upper 
acutely am-icled and forming an acute angle with the lower and 
^vith the partial rachis at the point of attachment. In young 
plants the pinna; are serrate or pinnatifid or with one or more 
jjinnules ffistinct. A few of the low-est pinnules are often slightly 
stalked but veiT cbfferently from those of P. angulare. — A. loba- 
T 2 
