1015 



T: LANCEOLATA R. Br. 



Rtstock creeping-; stipes 1-2' long; 

 fronds simple, 6-13' long, %-%' broad, 

 tapering both ways, edge entire or some- 

 times crisped, midrib prominent; veins 

 immersed, exterior free and clubbed at 

 apices; sori anti-marginal, in a continu- 

 ous line near apex. Old Rhodes Key, 

 Fla (Curtiss). Synonyms: Lingua cer- 

 vina Plum. Pteris lanceolata L. 

 Pteropsis lanceolata Desv. Neurodium 

 lanceolata Pee. 



Tribe VITTARIEAE. Sporangia borne 

 in a continuous marginal or intramarg- 

 ij?al furrow. 



VITTABIA J. E. Smith, Ac Roy Sci 

 Turin mem 5:413 (1793). 



Fronds simple, linear, grass-like, 

 Grass-fern. Thirteen tropical sp. 

 V: Z.INEATA J. E. Smith, Ac Roy Sci 

 Turin mem 5:413 (1793). 



Fronds 6-18' long, 1-5" broad, nar- 

 rowed gradually downward to a stout 

 compressed st, edge often reflexed; sori 

 in a broad intramarginal line in a slight 

 turrow, edge of frond at first wrapped 

 over it. Fla. Synonym: V. angustifrons 

 x. pteris lineata L. Sp PI 1073 



1016 



A. JOKDANI Muell, in bot zeit 22:25 t 

 1 f 1. B 2:485 as A emarginatum. 



Stipes rather stout, nearly bk, polish- 

 *ed; fronds ovate or deltoid-pyramidal, 

 bi-tripinnate; pinnules and upper pinnae 

 ample, smooth or nearly so, rounded or 

 even reniform, upper margin rounded, 

 slightly incised; sori 2-5, transversely 

 linear-oblong, subcontinuous. Gal; Ore; 

 NM; Nev; SD! Baja! Synonyms: A. 

 emarginatum Hooker. A. tenerum 

 Torrey 



California; I^evada; N. M. ; Oregon. 



n Fronds pilose, with w'ish hairs. 

 A: TKICHOLEPIS Fee. 8 me Mem Fam 

 Fong 72 (1854-57). 



Stipes smooth, polished, deep bk; 

 fronds oval; pinnules roundish, moder- 

 ately long-stalked; sori 3-7, of unequal 

 s i ze ; indusia very velvety. West Tex; 

 NM .' Synonym: A. dilatatum Nuttall. 

 **Fronds dichotomously forked, with 

 n um pinnae springing from upper side 

 o f the two branches. 



A . FEDATTJBt L,, Sp PI 1095. B 2:342. 

 z 1-148; 2:131. Greene, Gal ac b 2:415, 

 Cruz 



Stipes 9-15' long, dark chestnut-brown, 



Sori marginal or in- 



tramarginal, provided with an indusium 

 formed of the reflexed margin of frond, 

 opening inwardly. 



'Sporangia borne on a reflexed portion 

 of margin of frond. Adiantum. 



P I an V ia ? rn < a continuo " s vein- 

 receptacle which connects apices of 



face of frond. Cheilanthes; Crypto- 

 gramme; Pellaea. 



Genus ADIANTUM Linnneu*. 



Sp PI 1094 (1753) 



Sori com num and distinct. Midrib of 

 pinnules near lower margin or 0. Over 

 80 sp mostly tropical Am. Maidenhair. 

 Section EUADIAWTUM. 

 *Fronds at least bipinnate, pinnules fla- 

 bellate or cuneate. 



I. Fronds smooth. 



A. CAPILLUS-VENERIS L, Sp PI 1096. 

 Da 20. B 2:342 d. Greene, Cal ac b 2: 

 415, Cruz. P. 1:208, Cedros. 



Stipes nearly bk, polished, very slen- 

 der; fronds ovate-lanceolate, delicate, bi- 

 pinnate, upper half or third simply pin- 

 nate; pinnules and upper pinnae wedge- 

 obovate or rhomboid, rather long-stalked, 

 upper margin rounded and more or less 

 incised, crenate, or acutely dentato-ser- 

 rate, except where margin is recurved to 

 form the lunulate separted indusia. Va; 

 Ky; Fla; Ut; Baja! CD! SD Co! 



Venus-hair or black maidenhair fern, 

 United States. Mexico. 



A. TF.NERUM Swz, Fl Ind Occ 3:1719 

 (1806). 



Stipes 1 hi, erect, glossy; fronds 1-3 

 long, 9-18' broad, deltoid, tri-quadripin- 

 nate; pinnules articulated to their 

 petioles, falling off at maturity, cuneate, 

 upper edge rounded or somewhat angu- 

 lar, broadly often rather deeply lobed; 

 sori num, roundish, or transversely ob- 

 long. Fla. 



pinnules triangular-oblong, short-stalked 

 g Or i roundish or transversely oblong. 

 Maidenhair. Nova Scotia; BC; Alk; Ga; 

 M iss; Ark; Kans; Ut; Gal. 



Venus-hair fern; Black Maidenhair. 

 variety RANGIPERINUM Burgess. 



pinnules longer-stalked and deeply 

 cleft into narrow-toothed lobes on up- 

 BC. 



A . AETHIOPICT7M, Baker, Syn Fil 123. 



B 2: 342, in part as A. emarginatum. 



A. AMERICANTTM Carnutus, Can PI 



Hist 7 t 6 - B 2:343 as A - Pedatum. 



A. CHILE1TSE Kaulfuss. Of Ameri- 



can authors^A. emarginatum fide. B 



2:342. 



A. CONCINNTTM. Z 2:151. 



A. DIIiATATUM Nutt, in Hook hb. 



2:342. Identity doubtful. 



A. EMARGINATTTM Hook, Sp Fil 2 t 



75. Da 20. B 2:342, 485. Z 2:131, 382. 



Br 1:205. Cruz; 218 Rosa. 



PTERIS L, Sp PI 1073 (1753). 



Sori continuous; indusium delicate, 

 w'ish; midribs of pinnules central. A 

 cosmopolitan genus of over 100 species 

 (including Pteridium). 



Section EUPTEBI3 Veins free stipes 

 tufted, indusium single. 

 *Lower pinnae linear, undivided. 

 P: LONGIPOLIA L, Sp PI 1074 (1753). 



Stipes 6-12' long, clothed more or less 

 below with pale brown scales; fronds 

 1-2 long, 4-9' broad, oblong-lanceolate; 

 pinnae sessile, 2-5" broad, linear, entire; 

 veins close and fine, com once branched; 

 indusium y'ish-brown. Fla. . 

 **Lower pinnae forked or slightly pin- 

 nate blow. 

 P: CBETICA L, Mant 1:130 (1767). 



Stipes 6-12' long, erect, stramineous or 

 pale brown; fronds 6-12' long, 4-8' broad, 

 lateral pinnae com in 2-6 opp sessile 

 pairs, s-terile ones considerably the 



