110 



ß. Folia 5-foliolato-pinnata (vel superiora depauperata in P. anonlophylla) ; 

 rami e trigono 5 — 6-costati, 5 — 6-sulcati 



aa. Foliola reticulato-venosa, elliptico-oblonga, glaberrima (sp. brasi- 



licnsis) 12. P. anomophylla Radlk. 



ßß. Foliola clathrato-venosa 

 * Foliola subglabra 



f Foliola impunctata, glandulis microscopicis furcato- 

 geminatis insignia, oblongo-lanceolata, terminalia e 

 subobovato cuneata (sp. peruviana) 



13. P. obovata Pers. 

 ff Foliola pellucide punctata, elliptica, terminalia elliptico- 

 lanceolata (sp. novogranatensis) 



14. P. fraxinifolia Tr. & PI. 

 ** Foliola subtus subtomentosa, pellucide punctata (epidermide 

 inferiore non crystallophora), inferiora breviter ovata vel 

 subrotunda, superiora obovata (sp. peruviana) 



15. P. subrotunda Pers. 

 bb. Petiolus rhachisque foliorum alata; folia 5-foliolato-pinnata (vel superiora 

 depauperata in P. imberbi); rami e teretiusculo vel trigono 5 — 6-costati, 

 5 — 6-sulcati 



a. Capsula longius breviusve stipitata; foliola subtus in nervorum axillis 

 barbata 

 aa. Flores minores, pedicellati; petiolus rhacbisque anguste alata 



(sp. mexicana) 16. P. clavigera Schlecht. 



ßß. Flores majusculi, sessiles; petiolus rhachisque late alata (sp. 



mexicana) 17. P. sessiliflora Radlk. 



ß. Capsula breviter stipitata; foliola subtus in nervorum axillis non 

 barbata (sp. guianensi-brasiliensis) . . 18. P. imberbis Radlk. 



B. Capsula ovoidea vel ellipsoidea, sessilis; flores majores, immo maximi (thyrsi densiflori, 

 parte florigera breviuscula, interdum capituliformi ; corpus lignosum compositum; folia 

 5-foliolato-pinnata, petiolo rhachique alata) 



a. Bracteae bracteolaeque subulatae (foliorum epidermis inferior non crystallophora; 

 sp. guianensi -novogranatensis) 19. P. leiocarpa Griseb. 



b. Bracteae bracteolaeque late ovatae; flores maximi (sp. novogranatensi-peruviana) 



20. P. eriantha Benth. 



Sectio II. Diphtherotoechus Kadlk. 11. cc. Capsula exalata, acute triangularis vel triquetra, 

 lanceolata vel obovata, estipitata, varie vestita, saepius setoso-hirsuta, mesocarpio paren- 



• chymatico paucinervi, endocarpio tenaci e cellulis sclerenchymaticis elongatis exstructo, 

 Capsula sicca inde chartaceo-coriacea (unde nomen: dicpftega, corium) vel subcrustacea, 

 reticulato- nervosa (cf. Fig. II); semina breviter ellipsoidea, subtrigoua, glabra, arillo dorso 

 fisso usque ad medium obtecta; embryo oleoso-farinosus, cotyledonibus crassis oblique 

 superpositis; flores sat parvi, teneri, sepalis iuterioribus petaloideis, omnibus liberis; thyrsi 

 solitarii vel paniculatim congesti; corpus lignosum simplex; folia 5-foliolato-pinnata, petiolo 

 nudo, rhachi saepius alata, stipulis interdum magnis dilatatis lacerato- vel fimbriato-dentatis 

 scariosis; foliola interdum subspinuloso-dentata, in omnibus speciebus fibris sclerenchymaticis 

 brevibus (in P. steriopetala et interrupta crebrioribus) prope paginam superiorem instructa, 

 glandulis geniculatis vel malleoliformibus ornata; epidermis non mucigera. (Species brasi- 

 liensos, 1 guianensis.) 



