1031 1032 



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

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

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

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

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



P. KOBERTXANA 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 juglandifolium 

 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- POXiYSTlCKUM 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 GONIOPTERIS Presl. Veins tate, fixed by depressed center; pinnae 

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

 groups uniting. a t 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 i a te scales; fronds %-2 hi, 3-5' broad; 

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



P. BEPTAWS D. C. Eaton, Torr cl b 10; rulate wit!h appressed bristly teeth; fer- 

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



Rtstock short, creeping; stipes 3-10' i ng 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- ro dium acrostichoides Michx, Fl Bor Am 

 late hairs, oblong-lanceolate, pinnate g-267 (1803) Aspidium acrostichoides 

 with nearly or quite sessile, oblong, $' wz s yn Fil 44 (1806). Dryopteria 

 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- p RnJNITTTM Presl, Tent Pterid 83 

 astomosing; sori on middle of veinlets, ngse) 



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

 rudimentary indusium. Fla. Synonyms: w ith 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. wa rd base; pinnae num, linear-acumin- 

 Genns ASPIDIUM Swartx. ate, 3-4' long, very sharply and oft 



Indusium orbicular and fixed by the doubly serrate, with appressed needle- 

 center, or reniform and fixed by sinus, like points; son num forming 1 ^ row 

 opening all round margin; sori mostly each side of midri & half-way to margin. 

 on back of veins. The sections of this Cal; Ore; Id; Alk. Synonyms. Aspidiun 

 genus, as formerly understood, now con- munitum Kaulf, Enum I Z 5 W \ 1 S*>C; 

 stitute the genera Dryopteris, Poly- Dryopteris munita Kuntze, Rev Gen I 



nCTABZJL Cav stalked, linear-lanceolate. 



Veins^TastSmosing copiously. P. I-ONCHITXS Roth, Tent Fl Germ 3: 



fern. Fronds 9-20' long rigid; 



s more long, brown- Hoy ern. rons - 



ish, scaly at base; fronds l-i^long, pinnae 1' or more Ions, broadly lanfeo- 



%-l brokd, with a large ovate-acumin- late-falcate, . or lowest triangular, 



ate terminal pinna narrowed or forked strongly auricled on upper side, low. 



at base, and 1 or 2 lateral ones on each obliquely truncate, deeply spmulose- 



side, the lowest mostly forked; primary toothed; son . con V T ? uo s >. a w Q h a Mnnt" 



veins distinct to margin; areolae fine, ffin. Can;. Wis; Ut; Cal; Wa sh Mont, 



copious, with free included veinlets; sori Colo; Artie .Am. Synonyms. JT: 



In rows near main veins; indusia orbicu- dium lonchitis L, sp PI 1088 (i i *6 >. 



lar, peltate. Fla; Tex. Synonyms: Poly- Aspidium lonchitis STVZ^ Schrad J R bot 



podium trifoliatum L, sp PI 1087 (1753). 1800 <2):30 (1801). Dryopteris loncn 



Aspidium trifoliatum Swz, Schrad J tis Kuntze Rev Gen PI 2 



bot 1800 <2):30 (1801). Dryopteris tri- *l*FjS5S r s ,i i "i n ^-t^ Zrn b S-^9 



foliata Kuntze, Rev Gen PI 2:814 (1891). P. SCOPTTLINTTM Maxon, Fern t 



Pterid (1? 'Staik very short; frond narrowly Ian- 



