ANCHED T 
THE SMOOTH THREE-DI 
'OLYPODY 
resa und йкес sf a: fro tasa paalo of ip pore tenn vidi aioe me EE 
Ee e sis gus тынан ин Ana Lal Wy өседі М rw mar ді 
о ots se suae y tho eration, Branch йым or mae DEN 
Ph other слећу in thia, that while tho upper or central ono has liy sides пошу ea 
шша] once have tho plano on thelr lowe side larger, eometimae tice an large as hood du the upper 
0 that they ire obliquely triangular. Pinna opposite variable ойе from ovate io nes 
la impu уйине И senta м well as зету eniro at 4 
apex ; those of the central branch more decidedly pinnate t of the 1м nen. P 
ot ober blong obtuse, crenata or cronato-obato,amaller and Jes divided towards the ap 
Venation of the more compound, that is the erenato-lobate pinnules, consisting of а Пех 
with alternate veins, one to each lobe, these veins pinnato-fureately branched, the t 
Pructifoation on tho back of the frond, and spread over its whole surfaco. Sort small, circular 
consisting of numerous crowded spore-cases quite uncovered, arranged in а linea xowded seri 
along each side of tho pinnules near to but distinctly within the margin, the sori being seated s 
distance below the apex of the venules, Sometimes the fronds are less abundantly fructified, and th 
sori appear distant and senttered. Apore-cases small, d m, roundish-obovate, a қ 
Duration. "The rhizome is per fronds are annual about April, and in 
to dior. Tt can, however, hardly bo supposed that those who have seen tolerably good bot 
would hesitate to admit their distinctness, P. Dryopteris differs from Р. Jt а havin 1 
ling habit, while the fronds of the latter are rigid an vith alks and ribs, an 
Aly the caso with the latter, although by a misapplication of term metin bod 
Р. Dryopteris is decidedly three-branched, ав Па venation, compared to three little balls on slender 
wires, certifies ; whilst in Р, Robertianum, as Mr. Newman well states, the th ling portio 
globe, tho pinne rolled in on the Fachides, and the entire frond upon ite rachis, во that the frond is‘ 
ordinary Dipimnate structure, Of less Botanical importance perhaps, but equally, or still more clearly 
available as distinguishing cha he perfect smoothness of Р. Di ompared with 
Фе glandular pubescence of P. oberian, most readily seon on the stipes and. rachis, but equally 
mark tho plants as abundantly distin 
Most writers describo а cruciform бр g formed by the basal ріш Td 
pine in Р. Dryopteris; and iti Me ic ETE RAS Ж 
imens we have never seen it im any marked 4 
pinnules (the upper pair) are smaller, and nearly parallel, w 
divergent 
‘This species is a moisture-loving plant, although, as in most 
be stagnant. It is also peculiarly a shadeloving Fern; for 
hado and shelter of some kind is afforded it. It is a 
grows readily in pots. It increases with facility by division of th 
