Prares XII. ano XIII 
THE SOFT PRICKLY SHIELD FERN 
(POLYSTICHUM ANGULARE). 
POLYSTICHUM, Roth. Schott 
Cluster pore-cases circular, medial, rarely terminal on the venules, covered by an 
m, or memb 
ous scale, Indwsium orbicular, peltate, ie, attached at 
ог near its centre, the 
their extremities, the lower anterior one in each fascicle, on 
the fertile parts of the frond, bearing a sorus, 
n becoming free. Veins pinnato-fureate ; venules 
direct, disunited 
P. awovzanz: fronds bipinnate, lanceolate, lax; pinnules distinct, acute or obtuse 
xd base, and attached by a distinct stalk 
lobed or serrated, the serratures tipped with a soft bristle; sori terminal or 
subterminal 
herbaceous, with an obtuse 
pong Moriaphia Britney ir. 05, Babington, Манын e Dich Di 
Bannan, History на Fores, Genera Fins, 28, 
Poorsrtewex ассын; 4. Groy, Мани of the Botany of the Northern Unite States, 682, Ва, Ge 
Asta ANGULAR, Kill ES, in Willen Spence PI +з. бей, Fnglish Flore ir 
Brig, берістен lo English Boleny, frst, ВАА Flora, OS. Macey, Pl 
Анти вольт, К 1848 (u, various synonyms), 
Мином uaseetast, Tino, Senis И. А. Жыр. pro өте 1890; Fora Solana, ir. 130; v. 90 
илтми are 
Var. тивысатом: fronds lincar-lanccolato; pinnae short bluntish; pinnules roundish 
oblong imbricated. 
Var. атом: fronds lanceolate rather small; pinnules decurrent with the winged 
secondary rachides, teeth rounded bristle-pointed. (Plate X. fig. С) 
Var. твомекати: fronds lanceolate, lax, bi- or tri-pinnate ; pinnules narrow, attenuated, 
ly stalked; usually decply-lobed, with the lobes widely separated 
proliferous on the rachis, 
"or. TRIPINSATUN: fr 
anterior basal one much elongated, distinctly pinnate the greater part of its 
length, its pinnulets stalked 
is ample lanceolate; pimæ crowded ; pinnnles imbricated, the 
EXPLANATION OF THE PLATES. 
E, Porverinew алатың at fom Net, S м: ии, 
rc, Conall; AJ Lowe, ©, Pouretionta эзогыза 
HABITAT is very Ъ bich, dit in shody wooded places, = aly distributed than 
