ADIANTUM 



ADIANTUM 



25 



rubellum): anni 

 9 ; amabile, 29 ; 

 Capillus-Veneris, 

 einnum, 23 ; cun^ 

 30; decorum, 30; 





34. Adiantum Farleyense. 



forme, 1; £dgeworthii,2; elegans,ZO\ emur- 

 ginatum, 20 ; excisum, 25 ; Farleyeuse, 18 ; 

 J^ergusoni,2Q ; formosujn, 11; fragranii.^si- 

 mum, 28 ; gracilUmum, 31 ; hispidulum, 17 ; 

 intermedium, 10 ; Jordani, 20 ; Kaulfussii, 5 ; 

 Zathomi.ld; LeGriiiidi, 3i ; lunulatum, 1 ; 

 inacrophyllum,4; Mai risii , 2ii: iiuinuchlauiys, 

 32; Moorei, 29; wk/m/,,?,,,,/. js ; Novaj-Cale- '^ 



donise, U ; Oweui, i:" ; juili,i,iliii,i . :!,") ; peda- 

 tum, 15 ; Pfi-uviaiiuni. :i; pMlvi.hyllum, 7; princepx, 19 ; 

 ^,„/-. ,.,„,. 17; ].ulveruleunim, 12 ; W,.../../.7,//Hhw . 10 ; 

 ,;, , ;:; ; rubellum, ai ; ^unri.r Ciiha ,iii'i . i\ ; 



,s, ■ •■ ; ■^/.rciosum, 35; tt-ii.Tuiii, I'.i ; trai.czi- 



tn,-,,i,., .1 ; ,-,,,,,/„(«»!, 28 ; Tenustuiii, :;:■. ; I'.rsail- 

 l,!,.-,,, -.-, ; \ tuUti'M, 19; villosum, 13; Wagueri, 30; 

 Wiegatidl, 30 ; Williamsii, 21. 



A. Fronds with a single row of small leaflets on eitlier 

 side, rooting at the apex. 



1. la.mjilktam,Buna.(A. dolabrif6rme,Kook.). Fronds 

 1 ft. long on blackish wiry polished stipes; lower leaflets 

 nearly semicircular, all on hair-like stalks. India, Trop. 

 Amer., Australia. 



2. oauditum, Linn. {A. Edgewortliii.'B.ooW.). Fronds 

 6 in. to 1 ft. long on short brownish densely hairy stipes ; 

 leaflets deeply cut into several spreading narrow lobes. 

 Old World. 



AA. Fronds with usually a single roiv of large leaflets 

 OH either side, not rooting at the apex. 



3. Peruvi4num, Klotzsch. Fronds 1ft. or more long, on 

 polished stipes, with obliquely ovate pointed leaflets, 2 in. 

 long by 1!^ in. wide, on slender stalks ; sori 8-10 on either 

 side of the leaflet, twice as long as wide. Peru. 



4. macTOphyllum, Swartz. Fronds 1 ft. long, on rather 

 stout polished stipes, with 4-6 pairs of wedge-shaped ses- 



sile leaflets lK-2 in. long by %-l in. wide ; indusium 

 nearly continuous on either side of the leaflet. Trop. 

 Amer. 



5. Kaiilfussii, Kunze. Fronds 6-8 in. high, on slender 

 black stalks; leaflets 5-11, 2 in. long, %-l In. wide, with 

 unequal base ; indusia very long and narrow, forming an 

 almost continuous marginal band on either side of the 

 leaflets. Mex., W. Ind. 



AAA. Fronds at least Kpinnate, the segments dimidiate, 

 i. e. with the reinlets all springing from the lower 

 side of the tt-afht, irhirh is twice as long as broad. 

 E. Leaflets l^i-3 in. long. 

 C. trapeziSbrme, Linn. FrondslSin. or more high, with 

 the terminal leaflet longer than the lateral ; leaflets trape- 

 zoidal, with parallel sides, ^A-%in. wide, lobed, and with 

 numerous sori. A. Sdnctte-Catharlnw is a form with 

 deeper lobes. Trop. Amer. 



BE. Li'tifhtx xmnllrr, an inch or less long. 

 ('. Sliilh-s iioli shed, smooth. 



7. polyphyllum, Willd. Fronds often tripinnate, with 

 stout black stalks; i.iniur C-S, l,,ng, with closely set leaf- 

 lets which are Ji-l in. Inn-, tin- iiiipir margin curved, 

 with 4-6 circular or oblon;,' ni.luMa. S. Amer. 



8. diAphanum, Blumi". I'l-.m. Is simply pinnate or usu- 

 ally with 1 or 2 pinna, at Ihr l.asr ; h-aflets Hin. long, 

 Jiin. wide, with numerous .sori placi-il in the sinuses of 

 the inner and outer edges. Asia to N. Zeal. 



9. afilne, Willd. Fronds bipinnate, with a central pinna 

 and several lateral ones ; leaflets not exceeding Kin. long, 

 Jiin. wide, the upper edge parallel with the lower, and 

 crenate, bearing numerous rounded sori on the upper 

 and outer margin. N. Zeal. 



cc. Stalks polished but somewhat tomentose. 



10. intermedium, Swartz. Fronds 1 ft. or more long, 

 \\itli a t.niiinal pinna and 1-3 lateral ones on each side; 

 liaH.'ts 1 in. or more long, with interrupted sori on the 

 upper and two-thirds of the outer margins. Trop. Amer. 



CCC. stalks raa.jh or hairy. 



11. forrndsum, R. Br. Fn>n,ls l-'J ft. long, two-thirds 

 as broad, mostly tripiniiatr. w itli roiiu'li scabrous stalks 

 and rather small deeply lol.r.l l.atl.ts ',, --Sin. long, with 

 rounded and toothed out.i- in;ir;;iiis. Austral. 



12. ptllverulfintum, Linn. FmiHls ..Itm a f"..t long.with 

 a large terminal pinna ami scNiral lai. ral om-s, bipin- 

 nate; stalks purplish, liairv. as at-.' a|s,,tliiTa.-hisps ; leaf- 

 lets %-l in. long, Jiiii. wi.lr, ,l..s< ly i)laced, the outer 

 edge rounded or truncatr. W. In.l. 



13. vllldsuin, Linn. {.I . rh. ^inh,.;, I, am. iiwurtz). Fronds 

 large, with a terminal ami sev.ral latiral pinnee 6-12 in. 

 long, on stout villous-hairy stalks ; leaflets numerous, 

 nearly 1 in. long J'ain. wide, trapezoidal, with the inner 

 side parallel to the racliis ; indusia forming an almost 

 continuous line along the upper and outer margins. W. 

 Ind. and S. Amer. 



14. Ndvae-CaleddniaB, Keys. Fronds G-8 in. long and 

 wide, somewhat pentagonal, once pinnate with one or two 

 secondary basal pinniB on the lower side at base; leaflets 

 attached to the rachises byal.roa.l base, nearly 1 in. long, 

 pointed, irregularly imisi.l, lirarini,- 1^ rounded sori 

 next to the base. New Calnl.Miia. 



AAAA. Fronds forked, the twa hnnirhes bearing pintice 

 from the apjier side. 

 B. Stalks polished, smooth. 

 ^ 15. pedAtum, Linn. Fig. 33. Common Maidenhair of 

 our northern states, with circular fronds on purplish 

 stalks 1 ft. or more high. — Sometimes transplanted into 

 gardens, requiring a shady, moist and protected place. 



16. curvatum, Kaulf . Fronds forked and with the main 

 divisions once or twice forked; leaflets X-Wi in. long, 

 nearly Kin. wide, the upper margin rounded and lobed. 



BE. Stalks scabrous {or rough). 



17. hispidulum, Swartz (.4. pnbescens. Schk.). The 

 two divisions branching like a fan, with the largest pinnae 

 6-9 in. long, made up of numerous leaflets Kin. or more 

 long, two-thirds as broad, with numerous circular indusia 

 on the upper and rounded outer margin. Old World. 



