1009 1010 



exserted little or very much. Ala; glossy; fronds 2-6 long, 1-2 broad, 



Tenn; Ky. Synonym: T. speciosum upper pinnae fertile, slightly smaller 



Willd. than the barren ones; texture coriaceous; 



Sub-order SCHIZAEACEAE Presl, areolae small, copious, without free 



Sporangia ovate, sessile, arranged in veinlets. Southern Fla. 



spikes or panicles, having a complete, A: IiOMABIOIDES Jenman, Bot Dept 



transverse, articulated ring at apex, Jam b 11, 5:154 (1898). 



and opening by a longitudinal slit. Description not seen. Southern Fla. 



LYGODITJM Swz. Chrysodium lomariodes, Jenm, Timehri 



Sts scandent. Sporangia borne in a 4:314 (1885). 



double row on narrow fertile segs, each Tribe FOLYPODIEAE. Sori dorsal, 



on a separate yeinlet and provided with borne at or near ends of veinlets, in- 



a special indusium. Includes 16 species, dusia 0. 



I,: PAI.MATUM Swz. Climbing-fern. POLYPODIUM L. 



Mass; NY; Ky; Fla. Synonym: Hy- Sp PI 1082 (1753). 



droglossum palmatum Willd. Characters of the tribe, as formerly 



OBNITHOFTEBIS (Aneimia Swz.). treated; 350 or more species. Sections 



Sts not scandent. Sporangia naked, Phelbodium, Campyloneuron and Phy- 



attached by their bases to the narrow matodes are considered as distinct gen- 



divisions of the panicled fertile segs of era by recent writers. 



frond. Near 30 species, chiefly tropical. Section EUFOLYFODIUM. Veins free; 



O: ADIANTIFOLIA Bernh. fronds in one species pinnate. 



Rtstock creeping; stipes 1-1% Ig, *Sori Large. 



firm, naked; fronds sparingly pubescent, P: VTJLGABE L. 



the 2 lower branches elongate, pinnately Stipes 2-4' long, firm, erect; fronds 



decompound, fertile; sterile portion del- 4-10' long, 1-3' broad, cut nearly or quite 



toid-ovate, bi-tri-pinnate; ultimate seg to rachis into entire or slightly toothed, 



obovate or cuneate, entire or lobed, com blunt pinnae; veins once or twice 



striate above with num flabellate veins, forked. New England; Ore; Ala. 



Fla. Synonym: Aneimia adiantifolia Variety OCCIDENTALE Hooker. 



Swz. Fronds larger, pinnae sharply serrated, 



O: ME XI CAN A Underwood. long-pointed. 



Rtstock creeping, covered with narrow PrFAIiCATTTM Kellogg. 



blackish chaff; stipes slender, scattered, Stipes 5-8' long, stramineous; fronds 



6-12' long; the 2 lower branches of 12-15' long, 4-8* broad; pinnae num, tap- 



frond fertile, long-stalked, glandular, bi- ering to a slender point, sharply serrate; 



pinnate with densely clustered fructifi- sori nearest midrib; veins with 2-4 vein- 



cation; the rest of the frond like the lets. Cal; Wash. Synonym: P. glycyr- 



sterile ones, deltoid-ovate, simply pin- rhiza D. C. Eaton. 



nate; pinnae about 6 pairs and a rather **Sori smaller, often minute. 



large terminal one, short-stalked, ovate- P: PLTTMULA H B K. 



lanceolate, subcoriaceous, smooth and Stipes 1-4' long, bk, slender; fronds 



somewhat glossy; midrib distinct, veins narrowly lanceolate, 9-18' long, 1-2' 



free, oblique, parallel, closely placed, broad; pinnae num, narrow, entire, blunt, 



once or twice forked. Western Texas, lower gradually reduced; surfaces naked 



Synonym: Anemia Mexicana Klotzsch. except the bk wiry rachis; veinlets fork- 



SCHIZAEA Sm. ed, obscure. Fla. Synonym: P. elasti- 



Sts not scandent. Sporangia naked, cum Rich. 



fixed in a double row to the midrib of P: FECTINATT7M L. 



the narrow fertile segs. Sterile fronds Stipes rigid, 2-6' long; fronds elliptical- 



simple or dichotomously forked. In- lanceolate, 1-2% long, 2-6' broad, cut 



eludes 16 species. to rachis into horizontal, entire or tooth- 



S: PUSILIiA Pursh. ed pinnae, lower ones much reduced; 



Sterile fronds linear, very slender, rachis naked or finely villose; veinlets 



flattened and tortuous; fertile ones pellucid, once or twice forked; sori in 



equally slender, 3-4' hi, and bearing at long rows, of medium size. Fla. 



top the fertile appendage consisting of Se ction GONIOPHLEBIUM Blume Veins 



Scotia ewfoundand ' * times almost imperceptible), each with a 



single distinct free included veinlet, 



Sub-order FOX.YFODIACEAE Presl, bearing a sorus at its terminus. 



Tent Pterid 167 (1836). *Under surface squamous. 



Sporangia pedicelled, surrounded P: INCANTJM Swz. 



more or less completely by a jointed Rtstock woody, wide creeping, covered 



vertical, and elastic ring, bursting trans- with small brown scales; stipes 1-4' Ig, 



versely. Sori dorsal or marginal, borne erect, densely scaly; fronds 2-6' long, 



on a leafy frond, with or without in- 1-1%' broad, cut to rachis into entire 



dusia. pinnae; texture coriaceous; sori email; 



Tribe ACBOSTICEEAE. Sporangia veins indistinct, united or frequently 



spread in a stratum over the under sur- free Va; 111; southward. 



face, or rarely over both surfaces of P: THYSANOLEFIS A. Br. 



frond; indusia 0. Rtstock slender, firm, densely covered 



ACBOSTICHUM L. sp PI 1067 (1753). with minute lanceolate scales; stripes 



Sori covering entire surface of up- 3-12' long, erect, scaly; fronds ovate, 3-9' 



per pinnae. Near 200 species. long, 2-3' broad; pinnae distinct, ascend- 



A: AUBETTM L, Sp PI 1069 (1753). ing, blunt, dilated at base (except low- 



Stipes 1-2 long, tufted, strong, erect, est), thick, subcoriaceous, covered below 



