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FILICES. (FERNS.) 
minutely toothed, crowded, each bearing 3-6 pairs of approximated 
oblong fruit-dots. — Rich woods, not rare. July. — A handsome 
pale-green and smooth Fern, with conspicuous parallel fruit-dots, as in 
the last, which are rarely double on the lowest veins. 
§ 2. Athyrium, Roth. — Indusium of the short fruit-dots free at the 
ends, vaulted, often becoming curved or crescent-shaped. 
. Filix-fcemina, R. Brown. Frond 2-pinnate (1°-3P 
high, smooth), oblong or lanceolate in outline; pinnae lanceolate, nu¬ 
merous ; the narrowly oblong pinnules confluent on the rachis by a 
narrow margin, sharply pinnatifid-toothed ; fruit-dots oblong, at first 
straight, 4 - 8 pairs on each pinnule (Aspidium Filix-fcemina and 
asplenioides, Swartz.) — A narrow form is Aspid. angustum, IVilld. 
Moist woods, common. July. 
MCK.SONIA, L’Her. Dicksonia. 
Fruit-dots globular (small), marginal, each placed on the apex 
of a free vein or fork, inclosed in a recurved little cup-shaped or 
2-lipped sac, which consists of a reflexed and changed lobelet or 
tooth of the frond united by its edges with those of a nearly simi¬ 
lar proper indusium, which is fixed along its base on the inner 
side : the receptacle elevated, globular. (Dedicated to J. Dickson , 
an English cryptogamous botanist.) 
1. D. piinctilolmla, Hook. Minutely glandular and hairy 
(2° high) ; fronds ovate-lanceolate and pointed in outline, pale green 
and very thin, with strong stalks rising from slender extensively 
creeping rootstalks, pinnate, the lanceolate pinnae twice pinnatifid and 
cut-toothed, the lobes oblong; fruit-dots minute, usually one at the 
upper margin of each lobe. (D. pilosifiscula, Willd. Nephrodium 
punctilobulum, Michx. Sitolhbium, Desv. Patdnia, Presl.) — Moist, 
rather shady places, very common ; odorous. July. 
12. Cl STOPTERIS, Bernhardi. Bladder-Fern. 
Fruit-dots roundish, borne on the middle of a straight fork of the 
free veins ; the delicate indusium oblong-kidney-shaped, hood-like, 
attached by a broad inflated base on the inner side partly under 
the fruit-dot, opening free at the other side which looks toward the 
apex of the lobe, and is somewhat jagged. — Tufted Ferns with 
slender and delicate 2 —3-pinnate fronds; the lobes cut-toothed. 
(Name composed of kvcttis , a bladder, and 7 rrcpls, Fern , from 
the sac-like indusium.) 
1. C. bulbifci’tl, Bernh. Frond lanceolate , elongated (l 0- ^ 0 
