VnTAIMK.K — VrriAKIA. 1<>7 



(47) VITTARIA Smith. 



llhizomo cn't'pin;;; fronds {jmss-likc, mure t<v Irss t\iftiMl; veins free; Miri 

 in enntinuiMis ni;UL,Mnal or inl r;imiir;;in;il iine>. Kitiplivtes in moist fort'sts, 

 very common, i'liere is no er^nns of ferns whose sjiecies are more ilillieiilt 

 of dctennination. Tlie followinj; list l>y no means e.xhausts tlie i'iiilippine 

 species; but includes all of who.se identity and distinctness 1 feel certain. 



1. Sorus in a two-lipped marginal groove (1) V. ilonyata 



1. Sorus a .'^UKlitly Intramarginal line, with the margin rolled 

 back over it at first. 

 2. Sorus narrow, fronds thii-k. 



3. Sori subimmeraed (2) I'. U>ica(a 



3. Sorl immersed (3) V. falcata 



2. Sorus broad, fronds thin (4) V. xrolopcndrina 



(1) V. elongata >S\v. Fronds 15 to (JO cm. lony, seldom 1 em. broad, 

 acute or oliiuse, coriaceous; veins simple, oblique, immersed, parallel, con- 

 nected by the int ramarj,nnal soriferous veinh't ; soi i (|iiite sunk in a mar<,'inal 

 groove with two nearly e(|ual lips o|)ening outward. As defined here, this 

 species includes V. cnsifonnis >>\v., collected in Luzon by Cuming, nos. 28 

 and 7G, and several other rather diverse forms. 



Malanipa, Zamboanga, Challenyer Exp.; Jolo Archipelago, liurhidrje; 

 ]?enguet and Kizal. Lohcr ; Mount Mariveles, Voiirlnnd 1401 : .Mount Apo, 

 Cupehnid 9!}2. 



Tropics of Eastern Hemisphere. 



(2) V. lineata 8w. Frond 1.") to 50 cm. long, less than 1 cm. broad, at- 

 tenuate below, passing insensibly into the stipe, coriaceous; costa reaching 

 the apex, veins innuersed, parallel, oblique; sorus intramarginal in a 

 shallow groove. ])rotected when young by the margin of the frond. 



l?enguet, Lohcf, Toppituj 210, Elmer 0125, 0277; Blount Arayat, Loher, 

 Merrill; Mount Mariveles, Copclaud 221. 222; southern Luzon, Baranda; 

 Negros, Copeland 57. 



Pantropic. 



V. lineata, var. trichoides Christ. DifTers from the typical form in 

 having fronds only one-luill mm. broad, and the margin so folded over the 

 sorus that it may scarcely appear. 



Davao, W'lnhiirn 1415L 



(.3) V. falcata Kimze. Frond 10 to 15 cm. long. 3 nun. broad, obtuse, 

 narrowed gradually to the base, very thick; costa reaching the apex of the 

 sterile but not of the fertile fronds, veins short, (>l)li((ue, parallel, immersed; 

 sori quite sunk in slightly intranntrginal grooves. V. minor VC'e is a 

 smaller fern included here. 



lviz;il, Lohcr. 



iLilaya. 



(4) V. scolopendrina M(>tt. Fronds .30 to 50 cm. long, 1 to 2 cm. broad, 

 acute, contracted gnulually to the ba.se, coriaceous, but not exceedingly 

 thick; costa thick, veins fine, oblique, simple; .«sorus in a rather broad 

 subniarginal groove protruding slightly from the n])per surface, protected 

 at first by the margin. 



(atanduanes, lidrinnln : Davao. Wnrhurrj 14152. 



Paleotropic. 



