153 205 



<S: Rachis and costæ beneath besides the mostly 

 once branched stellate hairs clothed with thick 

 hairs, which are often cleft at the point. Most 

 or all pinnæ sessile. 



9. Pinnae 6- 7 cm long by I'/a cm broad, sessile, 

 the lowes ones reflexed and scarcely narrowed 



towards their base 241. D. ciirtn Christ. 



U. Pinnæ 10 — 14 cm long by 2'/a- 3 cm broad, the 

 lower ones not reflexed, narrowed towards 

 their base. 



10. Grass-green, thin leaved; only the basal 

 pair of veins run to sinus; long hairs of 

 rachis and costæ fewer, reddish. 



242. D. heterotrichu C. Chr. n. sp. 

 10. Grey-green, firm; 3— 4 lower pairs of veins 

 connivent to sinus; long hairs very nu- 

 merous, thill, rarely reddish; rachis u))- 

 wai'ds very tonientose . 243. D. liigubriformi.s Ros. 

 7. .South-Brazilian species. Rhizome creeping. 



iS. Pinnæ 4 — 6 cm long by I'/s cm broad, scarcelj' 

 incised to the middle. Rachis and costæ beneath 



without scales 244. D. Schivackeana Christ n. sp. 



iS. Pinnæ 15—18 cm long by 2— 3 cm broad, incised 

 above the middle. Rachis and costæ beneath with 



small scales 245. D. lugubris (Kze.) C. Clir. 



ir>. Indusiuni glabrous 234. D. venusta (Kze.) C. Chr. 



5. Indusiuni with stellate hairs, rarely absent. Underside 

 throughout with scattered, minute, branched hairs. 

 6. Lamina rigidly coriaceous, narrowed downwards; pinnæ 



4 — 8 cm long. Basal veins united. 218. I), scleropliylla (Kze.) C. Chr. 

 6. Lamina herbaceous or membranous; lower pinnæ not 

 shortened, 10 — 25 cm long. 



7. Branched hairs with 3—5 cm long, erect or hori- 

 zontal branches. Sori medial, sporangia glabrous. 

 8. Veins 10— 14-)ugate, lower ones often united. 

 No scales on rachis and costæ beneath. 



248. D. nephrodioides (Kl.) Hieron. 

 8. Veins 15 — 16-jugate; scales on rachis and costæ 



beneath 245. 0. lugubris var. quadrangularis (Fée). 



7. Branched hairs of the underside erect, anchor- 

 shaped (i. e. with 2—3 short recurved branches at 

 the top). 

 8. Sporangia with similar hairs. Veins free, sori 



inframedial. Brazil 246. D. glochidiata (Mett.) n. sp. 



8. Sporangia glabrous. Basal pair of veins united. 



Andes 247. D. ancyriothri.v Ros. 



Eugoniopteris. Lamina pinnate-liipinnatitid with a terminal pinna, 

 which in most species resembles the lateral ones, in others, it is larger 

 and often hastate, i. e. with one or two larger lobes below. 

 2. Pinnæ without aërophore beneath. Stellate hairs occur always on 



the scales of the rhizome and in most species also on rachis. 



Veins free or anastomosing. 



1). K. 1). Vitlensk. Selsk SUr., 7 H;L'Ukc. ii:iliiivid<Misk, "« inalhein. Altl. X. 2. '^^ 



