49 



50 



long, obtuse, entire or toothed; sori near Indusium peltate; fronds simply pin- 

 margin. Newfoundland; Alk; Va; Colo; nate with broad pinnae; veinlets com 

 Ore; Greenland. Synonyms: Polypodium uniting slightly near margin, 

 dryopteris L, sp PI 1093 (1753). — Ne- aUEIOULATA Underwood, Torr cl b 

 phrodium dryopteris Michx. 26:212 t 359 f 3-4, t 36 f 2 (1899). 



.e. BOBEBTIANA Underwood. Our Na- Stipes tufted, clothed below with large 

 tive Ferns, ed 6, 109 (1900). scales; fronds %-2° long, coriaceous; 



Stipes 6-10' long, stramineous when pinnae 2-12 pairs, short-stalked, ovate- 

 dry, glandular; fronds 6-8' long, 5-7' oblong or broadly lanceolate, terminal 

 wide, deltoid-ovate in outline, bipinnate, one distinct, and in small fronds the 

 lowest pair of pinnae far the largest, largest, appressed- serulate, smooth on 

 pinnatifid or again pinnate; upper pin- both surfaces; veins pinnate, veinlets 

 nae smaller, pinnatifid; lobed, or entire; few, free or uniting near margin; sori 

 sori copious, forming submarginal rows scattered in several irregular rows. Tex; 

 around segs. Minn; la; Id; Labrador to Ar. Synonym: Aspidium jugiandif olium 

 Manitoba. Synonyms: Polypodium ro- in part of recent authors, not Kunze, 

 bertianum Hoffm, Deutsch Fl 2: add 4 Klotzsch, Linnaea 20:363 (1847). 

 (1795 ). — Phegopteris dryopteris rober- POLYSTICHUM Roth, Tent Fl Germ 3- 

 tiana Dav, Cat Dav Hb Suppl 47 (1883). 69 (1800). 



- — P. calcarea Fee, Gen Fil 243 (1850-2). Indusium orbicular and entire, pel- 

 Section GONIOFTERI5 Presl. Veins tate, fixed by depressed center; pinnae 



pinnate, lower veinlets of contiguous and pinnules com auricled on upper side 



groups uniting. at base, mucronately serrate; veins free. 



P. TETRAGON A Fee. *Fronds simply pinnate, long-stalked, 



Rtstock creeping; stipes erect, 6-18' lanceolate. 



long, naked or slightly villose; fronds 1- p. ACROSTICHOIDES Schott, Gen Fil 



2° long. 6-12' broad; pinnae num, spread- 1834. 



ing, 3-6' long, lowest narrowed at base Christmas fern; evergreen wood-fern; 

 and sometimes stalked, deeply pinnati- Shield fern. Stipes 6-8' long, densely 

 fid; texture thinly herbaceous; rachis clothed below with pale brown lanceo- 

 and under surface finely pubescent; sori late scales; fronds 1 / ^-2° hi, 3-5' broad; 

 in rows near midrib. Marion Co, Fla pinnae linear-lanceolate, somewhat fal- 

 ( Reynolds). cate, half-halbred-shaped at base, ser- 



P. BEPTANS D. C. Eaton, Torr cl b 10; rulate with appressed bristly teeth; fer- 

 101 (1883). tile ones contracted and smaller, bear- 



Rtstock short, creeping; stipes 3-10' ing contiguous sori near middle, soon 

 long, clustered, gray-stramineous, slen- covering entire surface. Nova Scotia; 

 der, naked; fronds 4-12' long, membran- wis; la; Miss; Fla. Synonyms: Neph- 

 ous, softly hairy with branched or stel- rodium acrostichoides Michx, Fl Bor Am 

 late hairs, oblong-lanceolate, p'nnate 8:267 (1803). — Aspidium acrostichoides 

 with nearly or quite sessile, oblong, y WZ; Syn Fil 44 (1806). — Dryopteris 

 crenately pinnatifid pinnae, apex pin- acrostichoides Kuntze, Rev. Gen PI 2: 

 natifid, oft elongate and rt-ing; veins #12 (1891). 



pinnate, simple, basal veinlets oft an- ^ , MiJialiUM Presl, Tent Pterid 83 

 astomosing; sori on middle of veinlets, (1836J. 



rather small, sometimes with a minute Stipes 4-12' long, chaffy like rachis 

 rudimentary indusium. Fla. Synonym*: W nh brown scales; fronds growing in a 

 Polypodium reptans Swz, Fl Ind Occ 3: crown 1-4° long, tapering slightly to- 

 1655 (1806). — Aspidium reptans Mett. ward base; pinnae num, linear-acumm- 

 Genus ASPIDIUM Swartas. ate, 3-4' long, very sharply and oft 



-r -, i * « * w 4-n doublv serrate, with appressed needle- 



Indusium orbicular and fixed by the ^ D1 £ oi ° e ts; sori nU m, forming 1 row 

 center, or reniform and fixed by sinus, poi . midrib ha if-way to margin, 



opening all round margin; t .sori mostly JaP Ore- Id; Alk. Synonyms: Aspidium 



munitum' Kaulf, Enum Fil 2^6 J 1^.4),— 

 stitute ""the* "genera ^Dryopteris, Poly- P. 3 P ( ] g\fi ) 



upturns clix iuumi o^i i injouij _ r\yo ■ Trl • 



on back of veins. The sections of this L , ' u ,^' t["', 



genus, as formerly understood, now con- mU nita"Kuntze, Rev Gen PI 



stitute the genera Dryopteris, Poly- .V o^o noqi V 



stichum, Phanerophlebia and Tectaria, * fronds simply pinnate, scarcely 



nOMKA Cav. . . J^cSBX. Fl Germ 3: 



Veins anastomosing copiously. *\- , ,V 



T. TBIPOLIATA Cav. Hoi lv fern Fronds 9-20' long rigid; 



Stipes tufted, 1° or more long brown- n :^° fl 1 i y r o r n more long, broadly lanceo- 

 ish. scaly at base; fronds 1-1% "long, E^cate or lowest triangular, 

 broad, with a large ovate-acumm- ^'^v auric led on upper side, lower 

 ate terminal pinna narrowed or forked f {ron^ly aur r u nca te, deeply spinulose- 

 at base, and 1 or 2 lateral ones on each ^wely Y contiguous and near mar- 

 side, the lowest mostly forked; primary ^ r«n Wis Ut- Cal; Wash; Mont; 

 veins distinct to margin; areolae fine. gin. ^jn wis Synonyms: Polypo- 

 copious, with free included veinlets; son ^olo, Arnc ai y iog8 (1753)> _ 

 in rows near main veins; indusia orbicu- ^^jf^Yonchitis Swz, Schrad J bot 

 lar, peltate. Fla; Tex. Synonyms: Poly- Aspidium lo nchitis ^ • teris lonehi . 



M 0 ^*^ 80 ^™?^^ ? ; «S» Maxon, Fern „ S*. 



PHANEROPHLEBIA Presl, Tent Pterid t 1 ™^ yery snort; frond narrowly lan- 

 84 (1836). 



