AN ENCYCLOPAEDIA 
OF HORTICULTURE. 195 
Polypodium—continued. 
P. venosum (veined). A synonym of P. lycopodioides. 
P. venustum (charming). A synonym of P. himalayense. 
P. verrucosum (warted).* sti. firm, erect, 14ft. to 2ft. long, 
terete, naked. fronds 3ft. to 4ft. long, lft. broad; pinnz 6in. to 
8in. long, sin. to gin. broad, entire; rachis and both surfaces 
sometimes slightly hairy. sori confined to the inner row of 
areole, firm, immersed, forming very distinct papille on the 
upper side. Philippines and Malaccas. (H. G. F. 41.) SYN. 
chellolepis verrucosa. 
Adder’s Fern; Brake-root; 
rhiz. stout, with bright 
2in. to 4in. long, stramineous, 
fronds bin. to 12in. long, Sin. to 6in. broad, cut nearly or quite to 
P. (common), Golden 
Maidenhair; Wall Fern; Wood Fern. 
ferruginous scales. sti. firm, erect, 
the rachis; pinnz jin. to żin. broad, close, entire or slightly 
toothed, usually blunt. sori large, uniseriate. Temperate regions 
(Britain, &c.). ig. 246. Of this species, there are many 
varieties. The following are the most desirable. 
P. v. auritum (eared). This differs from the type in being 
auriculate at the > of the pinnz, on the upper, the lower, or 
both, margins. The fronds are 10in. to 15in. long, and over ĉin. 
wide. 
P. v. bifidum (twice-cut). A variety with fronds 10in. to Ibin. 
high and šin. wide, with the lobes forked, or sometimes bi- 
furca 
. 
| acid smell, but afterwards are nearly 
- | They vary in form, and grow indefinitely. 
 sitic on trees usually have the pileus sessile, 
Polypodium—continued. 
P, v. cambricum (Welsh).* fronds 12in. to 20in. long, 4in. to 
8in. wide, broadly ovate, bipinnatifid ; pinne ovate-lanceolate ; 
pinnules imbricated, and serrated on the margins. One of the 
earliest-known, best, and most distinct, forms. See Fig. 247. 
P. v. compositum (compound). fronds lft, to Lift. long, about’ 
4in. wide; some of them furcate on the points of the pinne, 
others partly forked and partly serrate, others much enlarged, 
and sometimes eared. 
P. v. cristatum (crested). fronds about 15in, long, 3in. to 
4in. wide, the apex bifid, each branch again forking, and often 
becoming crested ; points of all the pinne crested can curled. A 
handsome and very distinct variety. 
Fig. 248. POLYPODIUM VULGARE ELEGANTISSIMUM. 
P. v. elegantissimum (most elegant).* A form with very finely. 
divided fronds. See Fig. 248. Sars 
P. v. marginatum (margined). fronds about lft. long, linear- 
lanceolate; pinnæ unequally, sometimes deeply, serrate. 
P. v. multifido-cristatum (multifid-crested). A form with 
fronds 6in. to 10in. long, 3in. of which have only a narrow wing on 
each side of the stipes, but they are much forked upwards, and 
produced in a dense, multifid crest. 
P. v. omnilacerum (wholly-iorn). fronds pinnatifid; pinne 
deeply lobed, similar to cambricum, but the lobes are not im- 
bricated, and the tip of each pinna is more lengthened out. A 
handsome and rare variety. : 
P. V. gr maggpen Saget es (very beautiful). fronds lft. or more long, 
about 6in. wide, very similar to those of cambricum, the apex 
deeply serrated. A grand variety. : 
P. v. semilacerum (half-torn). /ronds lft. to lłft. Sin. to 
6in. wide, below deeply bipinnatifid, pinnate towards t to 
pinnæ irregularly toothed. Ireland. A handsome form. 
P. v. suprasoriferum (sori-bearing above). fronds 10i 
12in. long, narrow. sori frequently — at the margins o 
* >a surface. South of England. A very singular and 
P. v. variegatum (variegated). A but somewhat uncer- · 
tain, form, distinctly spotted and 'with whitish-yellow. 
P. Wildenovii (Wildenow’s). A synonym of P. propinquum. _ 
POLYPODY. See Polypodium. __ 
POLYPORUS (from the Greek polyporus, having 
many outlets; in allusion to the many openings or pores 
on the lower surface of the pileus). A genus of Fungi, 
belonging to the Hymenomycetes, or those in which the 
spores are formed on the tips of small projections from 
larger cells (of which each gives off four spores) on the 
surface (hymenium) of a definite part of the Fungus. See 
Mushrooms. ‘The species of Polyporus differ from the 
M ! 
true Mushrooms in that, while the latter bear the hyme- 
nium on the gills, the former bear it in a number of small 
tubes packed together to form a layer of peculiar aspect 
and texture on the lower surface of the cap, or pileus. 
They are usually dry and hard in texture, after a short 
time, and are rather long lived. They, at first, emit an 
