598 FILICES. (FERNS.) 
cal ring. Fronds elongated, climbing, the branches usually in pairs with a short 
common foot-stalk. 
1. L. palmatum, Swartz. Fronds slender, pinnæ deeply cordate at the 
base, palmately 4-7-lobed, the lobes oblong, obtuse, entire; the upper pinne 
decompound and bearing the fruit on the very narrow segments. — Low shady 
woods, Florida, and northward ; not common. — Rootstock very slender, creep- 
ing. Fronds 2°- 5° high, climbing on weeds and bushes. 
20. ANEIMIA, Swartz. 
Sporangia ovate, many-rayed at the apex, attached by the base in a double 
row to the narrow one-sided paniculate divisions of the two lower branches of 
the frond, or on separate fronds. Indusium none. Fronds erect, comfnonly 
three-branched, the middle branch sterile and 1 —3-pinnate. . 
1. A. adiantifolia, Swartz. Fronds sparingly pubescent, erect on a slen- 
der stipe; the two lower branches elongated, pinnately decompound, fertile ; 
sterile part of the frond deltoid-ovate, 2—3-pinnate; ultimate segments obovate, 
cuneate, entire or lobed, striate above with numerous flabellate veins. — Key 
West, &c., South Florida. — Tronds 6/~12! high, rather rigid. Rootstock creep- 
ing, slender, covered with a black tomentum. 
21. OSMUNDA, L. Frowerine Fern. 
Sporangia globular, short-pedicelled, having an incomplete transverse ring, 
represented by a few parallel striæ near the apex, opening by a vertical chink 
into two nearly equal valves, paniculately arranged on contracted parts of the 
frond or on separate fronds. Fronds tall, erect, several from a stout rootstock, 
1-2-pinnate. Veins forking, free. 
* Fronds bipinnate, fertile at the top ; sterile pinnæ few. 
1. O. regalis, L. Fronds ovate, smooth; sterile pinne distant ; the finely 
serrulate pinnules distinct, oblong-lanceolate, cordate or truncate at the nearly 
sessile base, sometimes auricled at the lower side of the base; the upper pinnze 
erect, panicled and thickly covered with light brown sporangia. (O. spectabilis, 
Willd.) — Swamps, Florida to Mississippi, and northward. — Fronds jp» 
high ; pinnules 1/— 2/ long, 3" — 4” wide. : 
* * Sterile fronds pinnate: the pinnce numerous, deeply pinnatifid, with oblong entire 
