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THE GENERA AND SPECIES OF CULTIVATED FERNS. 
I 
5. P. Phcyoptcris, Linnaeus. — A deciduous, hardy, indigenous species, found in most European countries, as far 
north as Lapland. Fronds from six to twelve inches long, lateral, adherent to a somewhat scaly creeping 
rhizome ; hipinnatifid, the lower pinnu3 standing forward, deflexed, with linear-lanceolate, entire segments, the 
lower ones adnate-decurrent. Son rather oblong, intramarginal. 
6. P. liexagonopterum, Michaux. — A very handsome, hardy, deciduous Fern ; from North America. Fronds 
triangular, about one and a half foot long, rather hairy, lateral, adherent to a creeping rhizome ; hipinnatifid, 
pinuae opposite, sessile, decurrent at the base, with oblong-obtuse crenulate segments. Sori submarginal. 
7. P. subpetiolatum, Hooker. — A pale-coloured, evergreen, greenhouse Fern ; from Mexico. Fronds one to 
three feet long, pubescent, lateral, articulated, on a scaly, creeping rhizome ; linear-lanceolate, pinnate, the 
pinnrp entire but without a footsalk. Sori uniserial ; nearly all the fronds soriferous throughout. 
8. P. Hcnchmanii, J. Smith MS. — A glabrous, evergreen, stove Fern; from Mexico. Fronds two feet 
long, quite smooth, pinnate, with long, linear-lanceolate, narrow pinna?, decurrent at the base, very dark green, 
lateral, articulated on a scaly creeping rhizome. Sori large, uniserial, bright brown. This plant has been in 
cultivation for several years, but unnamed. 
9. P. alpestre, Sprengel. — An ornamental, hardy, deciduous Fern ; native of Switzerland. Fronds one and a 
half foot long, glabrous, terminal, adherent to a short, creeping rhizome ; lanceolate, bipinnate, with lanceolate- 
acuminate pinna;, narrowing towards the base, the pinnules distant, pinnatifid, oblong. Sori medial, round and 
uniserial. 
10. P. Dryopteris, Linnaeus. — A deciduous, hardy, British species; also found throughout Europe, Northern 
Asia, Africa, and N. America. Fronds six to ten inches high, lateral, adherent to a creeping rhizome ; ternate, 
smooth, bipinnate with deflexed spreading divisions, and obtuse, subcrenated segments. Sori rather oblong, 
intramarginal. 
11. P. calcareum, Smith. — A hardy, deciduous British Fern; found in most parts of Europe and North 
America. Fronds from six to twelve inches high, erect and rather rigid, lateral, adherent to a rough scaly 
creeping rhizome ; triangular, three-branched, the branches doubly pinnate, with somewhat crenated obtuse 
segments. Sori round, intramarginal ; veins simple, occasionally forked. 
12. P. triclwdes, Beinwardt. — An ornamental, evergreen, stove species; from the East Indies. Fronds three 
to five feet high, hairy, terminal, adherent to a thick, creeping rhizome ; bi-tripinnate, fragile, pale green, 
with linear-lanceolate pinna?, the pinnules pinnatifid, with somewhat ovate, bluntly lobed segments. Sori round, 
medial. Stipes and rachis covered with a fine powder ; stipes scaly, especially near the rhizome. This Fern is 
in cultivation under the name of Zastrea paludosa. 
13. P. effumm, Swartz. — An evergreen, stove Fern ; from Jamaica. Fronds membranous, three to five feet 
long, glabrous, pale green, adherent to a creeping rhizome ; deltoid, four times pinnate, with lanceolate pinnae, 
the pinnules linear-lanceolate, with pinnatifid segments, the lower ones distant. Sori round, medial ; veins 
pinnately forked. Stipes scaly, especially near the base. 
14. P. lachiopodium, J. Smith. — A very ornamental stove species, of a soft delicate texture ; from Jamaica. 
The fronds are from two to four feet long, terminal, adherent, forming an erect (caudiciform) rhizome ; deltoid, 
bi-tripinnatifid, with lanceolate-acuminate pinnules, and oblong-linear, obtuse, hairy segments. Sori round, 
medial. Stipes and rachis densely covered with narrow brown scales. 
MTPOLEPIS Bernhardt. — Name derived from hypo, under, and lepte,, a scale ; in allusion to the sori being 
partly concealed by a scale-like indusium. 
Sori round, terminal, marginal, partly concealed by an indusiform reflexed crenule, 
and situated opposite the sinus of the segments, forming a row on each side the 
ultimate rib. \ eins forked or pinnate ; venules direct, free, the lower exterior one 
sporaugiferous. Fronds from two to six feet high, bi-tripinnate, segments smooth, 
crenulated or covered with glandulous hairs. — This genus is usuaBy placed in Pterideae, 
owing to the reflexed marginal crenule being taken for an indusium ; but, from 
repeated observations of its affinities, it is now arranged in Polypodies, the reflexed 
marginal crenule being considered analogous to what occurs in Struthiopteris, and 
Allosorus ; it hence forms a connecting link between Struthiopteris and Polypodium. 
It is difficult to conceive that any other station could be correctly assigned for it, for 
in one species the crenule is scarcely reflexed, and this having also forked veins and 
medial sori, seems scarcely divisible from Poljijodium. Fig. 3 represents a pinnule 
of S. repens (nat. size). 
1. H. riiyitlosa, J. Smith (Polypodium mgulosum, Zabillardiere). — A rambling 
growing, evergreen, greenhouse species, distributed more or less throughout the East 
and West Indies. The plant now in cultivation comes from New Holland. Fronds 
from two to four feet high, lateral, adherent to a very peculiar, elongated, rough, 
creeping rhizome; tripinnate, pinna; lanceolate, with lanceolate-acuminate pinnules, 
and oblong, rather obtuse segments, the lower ones distant and pinnatifid, margin 
slightly crenulated. Sori round, medial. Fronds covered with glandulous hairs. 
.'. //. repens, Presl (Lonchitis repens, Linnam; Cheilanthes repens, Kaulfuss). — A large, coarse-growing, 
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