1025 



sp. Synonym: Acrostichum thalictroides 

 L, sp PI 1070 (1763). 



Tribe BZ^BCKKZAJi. Sori dorsal, lin- 

 ear or oblong, borne on transverse veins, 

 parallel to midrib; Indusium fixed at 

 outer, opening at inner, margin. 



* Veins free. Struthiopteris; Blechnum. 



Veins more or less reticulate. Wood- 

 wardia. 



8TBTJTHIOPTESZS Scop, Fl Com ed 1, 

 168 (1760). 



Sori in a continuous band next midrib; 

 indusium elongate, formed of the re- 

 curved and altered margin of pinnae, or 

 submarginal; fronds of 2 sorts, elongate, 

 pinnate. Nearly 50 species, mainly of 

 south temperate zone. 

 8. SFZCANT Weiss, PI Crypt 287 (1770). 



Deer fern, Hard fern. Cal; Alk. 



Synonyms: Osmunda spicant L sp PI 

 1066 (1753). Lomaria spicant Desv Mag 

 Gesell Nat Fr Berlin 5:325 (1811). 

 Blechnum boreale Swz. Schrad J bot 

 1800 (2): 75 (1801). Blechnum spicant 

 J. E. Smith, Ac roy sci Turin mem 5:411 

 (1793). 

 BX.ECHHT7M L. 



Sori linear, elongate, continuous near 

 midrib; indusium continuous; fronds pin- 

 nate. Near 20 sp. 

 B. SERRT7I.ATT7M Richard. 



Stipes 6-12' long, stout, erect, nearly 

 naked; fronds oblong-lanceolate, 1-1% 

 long, 3-6' broad, with 12-24 pairs of dis- 

 tinct linear-oblong pinnae, margins finely 

 incised; texture coriaceous; veins very 

 fine and close, fertile pinnae narrower. 

 Fla. Synonym: Blechnum angustifolium 

 Willd. 



Genii* WOODWARDIA Smith. 



Sori linear or oblong, forming chain- 

 like rows; indusia separate. Chain fern. 

 Six sp. Named for Thomas J. Wood- 

 ward, an English botanist. 



Section EUWOODWARDIA. Fronds 

 uniform, veins forming at least one ser- 

 ies of areolae between sori and margins. 

 W. CHAMZSSOZ Brack, FUS Exp 138. B 

 2:344 as radicans. 



W. RADICALS Am, mem ac Turin 5:412. 

 B 2:344. Da 20. Baja! Greene, Cal ac b 

 2:415 Cruz. 



W. SPX2TC7X.OSA Mart & Gal, Mem Ac 

 Brux 15 (5): 64 (1842). 



Caudex stout, erect, rising a little 

 above ground; stipes stout, 8-12' long; 

 fronds 3-5 long, subcoriaceous, pinnate; 

 pinnae 8-15' long, 2-4' broad, oblique to 

 rachis, pinnatifid nearly to midrib; segs 

 spinulose-serrate; veinlets forming a 

 single row of oblong sorus-bearing areo- 

 lae next midvein. besides a few oblique 

 empty areolae outside the fr'ing ones, 

 thence free to margin. Cal; Ar; Baja! 

 Synonym: W. chamissoi Brock, in Wilk- 

 es' US Expl Exp 16:138 (1854). 



Woodwardia radicans americana 

 Hook, sp Fil 3:67 (1860). 



Washington to Baja Cal.; Arizona, 



Section AITCHISTZA Fronds uniform, 

 veins free between sori and margins. 

 W. VIRGINXCA J. E. Smith. 



Stipes stout, 12-18' long; fronds oblong- 

 lanceolate, 12-18' long, 6-9' broad; pin- 

 nae linear-lanceolate, 4-6' long, %-!' 



1026 



broad, cut nearly to rachis into linear- 

 oblong lobes. Can; Fla; Mich; Ark. 

 Synonyms: W. Banisteriana Michx. 

 Blechnum Carolinianum Walt. B. Vir- 

 ginicum JL. Doodia Vlrginica Presl 



Section LORINSERIA Presl. Fronds 

 dimorphous, veins everywhere forming 

 areolae. 

 W. ANGTTSTIPOI.IA J. E. Smith. 



Sterile frond with slender stipes, 9-12' 

 long, 6-8' broad, deltoid-ovate, with num 

 oblong-lanceolate sinuate pinnae; rachis 

 broadly winged; fertile frond with an 

 elongate, castaneous st; pinnae 3-4' long, 

 narrowly linear. Me; Fla; Mich; Ark. 

 Synonyms: W. onocleoides Willd. W. 

 areolata Moore. Acrostichum areolatum 



Tribe ASPLENTEAE. Sori dorsal, lin- 

 ear or oblong, oblique to midrib, or rare- 

 ly parallel with it; indusium fixed by one 

 margin to veinlet, opening at the other, 

 sometimes double. 



* Veins free. Asplenium; Athyrium; 

 Phyllitis. 



**Veins reticulate. Camptosorus. 

 ASPLENIUM L. 



Sori on upper side of a fertile veinlet, 

 rarely on both sides, oblong or linear, 

 oblique, separate; indusium straight or 

 rarely curved. Near 350 cosmopolitan sp. 



Section ETTASPLENIUM. Veins free, 

 simple or branched; indusium straight 

 or slightly curved, attached to upper side 

 of a vein. 



*Fronds simple. 

 A. SEBSATTJM L. 



Fronds growing in a crown from a sh, 

 stout, erect rtstock, 1^-2%* long, 2-4' 

 broad, simple, spatulate or Hnear T oblan- 

 ceolate, margin crenulate or irregularly 

 but finely serrate, subcoriaceous; midrib 

 prominent, keeled and often bk-ish-p be- 

 neath; veins closely placed, 1-forked; 

 sori elongate, following veins of upper 

 ^ of frond from near midrib halfway to 

 margin; indusia single, free edge entire. 

 Fla. 



**Fronds pinnatifid or pinnate below, 

 tapering to a point. 

 A. PXTTNATIPIDUM Nuttall. 



Stipes tufted, 2-4' Ig; fronds 3-6' Ig, 

 1-2^' broad, lanceolate, pinnatifid, or 

 pinnate below, tapering to a slender pro- 

 longation above; lobes roundish-ovate, 

 or lowest pair acuminate; sori num. Pa; 

 111; Ky; Ala. 

 T. EBENOIDES R. R. Scott. 



Fronds 4-9' long, broadly lanceolate, 

 pinnatifid, pinnate below; apex prolong- 

 ed and slender: divisions lanceolate from 

 a broad base, lower ones shorter; stipes 

 bk and polished, as is lower part of 

 midrib, especially beneath. Ct; NY; 111; 

 Ala. 



***Fronds once pinnate. 



I. Pinnae %-%' long, mostly blunt. 

 A. Rachis chestnut brown or bk-ish. 

 A. EBENETJM Ait. 



Stipes tufted. 3-6' long, chestnut 

 brown: nearly naked; fronds 8-16' long, 

 linear-lanceolate; pinnae 20-40, lanceo- 

 late, sub falcate, or lower oblong, %-!' 

 long, dilated base auricled on upper or 

 both sides; sori oft 10-12 on each side. 

 Fla; Ky; Can. Synonym: A, trichoman- 



