ADIANTUM 



nate, often tripinnaie 

 numerous rather sm( 

 shaped leaflets with vei 



lodges deeplij cut into a series of narrow lobes. 

 Farley^nse, Moore. Fig. 34. Fronds often reach- 

 15-24 in. in length, forming a rich profusion of 

 closely overlapping pin- 

 nae, light green; leaflets 

 more or less wedge- 

 shaped at base, with cur- 

 ved sides and the outer 

 margin rounded and 

 deeply cut into 10-15 

 narrow lobes, which rare- 

 ly bear sori. Barbadoes. 

 I.H. 19: 92. -Said to be a 

 garden variety of A. ie- 

 nerum, but apparently a 

 good species, 

 cc. Edges not lacin- 

 iately cut. 



19. t^nenun, Swartz. 

 Fronds deltoid, 12-15 in. 

 long, two-thirds as wide, 

 the terminal leaflets 

 equally, the lateral un- 

 equally wedge-shaped at 

 base, all of them rhombic 

 and deciduous when dry, 

 with 10 or less small sori 

 on the outer and inner 

 margins. A. JL(lthomi,A. 

 VietbricB, A. rhodophyl- 

 lum, A.prlnceps, and A. 

 Baiisei are horticultural 

 forms. Fla. and Trop. 

 Amer. 



20. Jdrdani, C. Muell. 

 (A. emaryindtum, D. C. 

 Eaton, not Hook.). 

 Fronds 1 ft. or more long, 

 G in. wide, mostly twice 

 pinnate, with nearly 

 semicircular leaflets ; 



sori elongate, the indusium almost continuous around the 

 margin of the leaflet. Calif, and Oreg. 



21. Williamsii, Moore. Fronds triangular, nearly 1 ft. 

 high ; leaflets nearly semicircular, 3-4-lobed on the outer 

 margin, bearing 5-8 sori covered with oblong indusia. 

 Peru. — Similar in habit to the last, but smaller and with 

 more numerous sori. 



BB. Leaflets mostly less than a half inch across. 

 c. Frniid.'i lit least •/iiadripiunate, broader than long. 



22. Collisii. ^1.. i, l-,,i,,lv 1 ft. or more long, very 

 br.ia.l, iiriitly repeatedly forking; 

 leati. I .111-, those towards the outer 

 porti..ii- |..ii_'c r ;iii.| l;ir_. itlian those nearer the base.— 

 Of gardi-ii origin. possil>ly a hybrid. 



■ oblong, longer 



cc. Fronds mostly triangular 



than broad. 

 Shape of leaflets rhomhie. the in 



23. 



12-18 in.long.G-9 iii.wn;. , ' . 

 leaflets rhombic-oblong;, -::l'.1iiI; 

 leaflet, usually set close tiigfthi-r 

 DD. Shape of leaflets roundi.-<h with obtuse ba 



21. ffithiopicum, f.inii, i !.» 



idney-shaped 



2-3-pinnate, 

 black stalks; 

 ri 4-8 on each 

 Braz. 



11,1 !.»»'■'■ f III/ ',', Swartz). Fronds 



1 ft, "!■ ■•■ i-.i..,,,, .', ,,,i,,- -1,11,. ■J-:i-pinnate, rather 



narr'> , ;:-lobed, the mar- 



gin 11' I ' i t . with oblong or 



kidn.-} -ii;!!'. .1 ii,.ii,-:,,, Aw. -.,:,.[ ,\u-tr:a. 



25. exclsum, Kuuze. Fronds 2-3-pinnate, G-12 in. long, 

 3-4 in. wide; leaflets about J^in. wide, roundish, with the 

 margin cut into small rounded lobes; sori large, 2^ to 

 each leaflet, kidney-shaped or circular. Chile. 



DDD. Shape rif leaflets 



E. llidlisia ..1,1,., 



26. Capillus -Veneris, 



i.DIANTUM 



iiiefly cuneate at the base, 

 indistinctly lunate. 



I. (,l. F4rgusoni, A. Mai- 

 rlsii. Moon), l-'ii.', :;r,, I'l.ni.l^ L'-:i-pinnate,6-20 in. long, 

 3-8in. widf; l.-atlits n.arly '...in. wide, more or less ir- 

 regularly lobed at the outer margin ; sori 1-3 to each 

 leaflet, with oblong or more or less elongate narrow 

 indusia. Native southward, and widely distributed 

 throughout the Old World. — Exists in many varieties, 

 some of them deeply lobed, like A. Farleyense ; a com- 

 pact imbricated form is very effective. 



27. b^llum, Moore. Small, 3-8 In. high, bipinnate; leaf- 

 lets with the outer margin erose and often divided into 

 2-3 shallow lobes ; sori 2-3 to each leaflet, rather long 

 and broad or somewhat lunate. Bermuda. 



EE. Indusia nearly circular, with a narrow sinus. 



28. cune&tum, Langs. & Fisch. {A. limulum, A. mun- 

 dulum, Moore. A. VersailUnse, A. fragrantissimum, 

 Hort. ) . Fronds 3-^-pinnate, deltoid, 6-15 in. long, 5-9 in. 

 wide ; leaflets numerous, obtuse or broadly wedge-shaped 

 at base, the margin rounded and more or less crenately 

 lobed ; sori ,3-5 to each segment, with rather small rounded 

 indusia. Braz. — Runs into many forms, of which A.va- 

 riegAtum is one. 



29. Modrei, Baker (A. amdbile, Moore, not Liebm.). 

 Fronds 2-:i-pinnate on long slender stalks, 6-15 in. long; 

 li-at1<-ts S-^jin. long, rhomboidal, with wedge-like base, 

 il.-r|,lv luli.-.l ; .sori of medium size, 4-6 to each leaflet. 



t. 1 .1 . deeoram. A.Wiigandi, A. ile- 



, ,Moore). Fronds 2-3-pin- 



ii'-ral leaflets rhomboid, 



I M ' I or incised ; sori 4-6 



\ir\ t:ir-i membranous circular in- 



iiehreelitii, Hort., "supposed to be a 



decorum and A. Williamsii," has 



.■:o. WAgnerl, Jl.' 

 gans, A. Oweni. J 

 nate, 6-9 in. Ion LT, i 

 the terminal cuni 

 to each leaflet, wit 

 dusia. Peru.— ^. 

 cross between A. 

 strong, graceful fronds thickly set with round pinnules 

 of firm texture. 



31. rubillum, Moore. Fronds 4-6 in. long, deltoid, bi- 

 pinnate ; texture membranous, bright green, reddish 

 when young ; leaflets Kin. wide, deltoid or the lower 

 rhomboid, the outer margin deeply lobed and the lobes 

 finely toothed ; sori round at the apices of the lobes. 

 Bolivia. 



Pinna of Adiantum Capillus-Veneris. Xattiral s 



