24 Th. Loesener, 



2. Fol. snbtns epunctata. 



g Folia subtus appresse villosulo-pubescentia. Species Peruviana. 



68. I. sessiliflora Tiiana. 

 §§ Fol. subtus plerumque tantum novella sub lente parce brevissime 

 puberula, glabrescentia. Species Brasiliensis et Argentinensis. 



140. I. brevicuspis Reiss. 

 ß. Folia integerrima vel integra vel tantum iuxta apicem pauciserrulata vel- 

 cienulata etc. 



1. Folia subtus dense velutina, pube saepius spurie stellata. 



189. I. velutina Mart. 



2. Fol. subtus manifeste et + dense, praecipue in costa, nervis margineque, 

 pubescentia vel hirtella vel tota in facie puberula, vel tantum in costa 

 liirtella, in facie glabra. 



g Folia ovalia vel ovata vel obovata, basi obtusa vel rotundata rarius 

 subacuta, 2 — 5, raro — 7,5 cm longa, costa media supra plana vel sae- 

 pius basi prominula, vel lamina in fol. subrevolutis secundum costam 

 impressa, costa ipsa subprominula, nervis lateralibus utrinque 5 — 8 sub 

 angulo 45 — 67» patentibus. 103. I. asperula Mart. 



g§ Fol. obovata usqne obovato - lanceolata vel elliptica vel ovalia, basi 

 obtusa vel acuta vel cuneata, 5 — 9 vel usque 11 cm longa, costa 

 media supra subimpressa vel impresso - subinsculpta, rarius subplana, 

 nerv, lateral. 6—10 sub angul. 50 — 70" patentibus. 



190. I. Brasiliensis (Spreng.) Loes. 

 §§§ Fol. obovata, basi acuta vel subcuneata, raro obtusa, 4,5 — 9,5 cm 



longa, 2,6 — 5 cm lata, costa media supra plana vel prominula. 



191. I. pseudotheezans Loes. 



3. Fol. subtus tantum sub lente in costa parce brevissime puberula vel 

 pilosula vel niinutissime pulverulento-hirtella, glabrescentia. 



§ Eamuli, petioli, inflorescentiae nudo oculo pubescentia. Folia apice 

 obtusa vel plerumque rotundata. 38. I. Sellowü Loes. 

 §§ Glabra vel ramuli et inflorescentiae sub lente pulverulento-hirtella. 

 Folia apice obtusa vel saepe, interdum obtnsiuscule, acuminata vel 

 subacuta. 



f Folia basi cuneata vel cuneato-acuta, rarius cuneato-obtusa, apice 

 obtusa vel breviter obtusiuscule acuminata, margine i. s. anguste 

 recurvato integerrimo. Species Guyanensis. 



214. I. umbellata Klotzscb. 

 ff Fol. basi obtusa vel acuta, rarius cuneato-obtusa vel cuneato-acuta, 

 apice acuminata rarius subacuta, margine i. s. angustissime recurvato 

 vel subplano, integerrimo vel saepe iuxta apicem brevissime serrulato. 

 Species Brasiliensis vel Argentinensis. 



140. I. brevicuspis Reiss. 

 b. Folia, certe adulta, subtus glaberrima vel glabra. 



ß. Folia subtus + dense punctata, punctis parvis vel interdum minutis sed 

 nudo oculo vel certe sub lente manifestis. 



