109 



A. Capsula pyriformis vel clavata, basi cuneata vel in stipitem longiorem brevioremve atte- 

 nuata vel abruptius contracta; flores minores vel mediocres 



a. Corpus lignosum compositum (rarius usque ad medios ramulos, vix altius simplex; 

 cfr. P. Ciiruru, pinnata) 



aa. Inflorescentiae (thyrsi) abbreviatae, in fasciculos vel glomerulos aggregatae 

 (petiolus rhachisque foliorum alata) 



a. Thyrsorum fasciculi in ramis junioribus e foliorum axillis enascentes 

 (alabastra hirtella, germen hirsutum ; folia ternata, foliola breviter 

 elliptica, supra opaca, subtus nitidula; species novogranatensis) 



1. P. densiflora Smith. 



ß. Thyrsorum fasciculi in caulibus vel ramis adultioribus ad foliorum 



delapsorum cicatrices Orientes (alabastra subglabra, germen adpresse 



pilosum; folia 5 -foliolato- pinnata, rarius transeuntia in ternata in 



P fasciculata) 



aa. Rami 3-angulares 



* Foliola elliptica, repando-dentata, sicca quoque viridia, supra 

 subtusque nitida; sp. guianensi-antillana) 



2. P. fasciculata Radlk. 



** Foliola lanceolata, remote serrato-dentata vel dentibus ob- 



soletis subintegerrima, sicca fuscescentia, nitidula (sp. peru- 



viano-brasiliensis) 3. P. alata Don. 



ßß. Rami 6-costati, 6-sulcati (foliola elliptico-ovata, apice anguloso- 

 dentata, sicca fusca, nitidula; sp. peruviano-brasiliensis) 



4. P. rhizantha Poepp. 

 bb. Inflorescentiae (thyrsi) solitariae vel paniculatim congestae 

 a. Petiolus vel certe rhachis foliorum alata 



aa. Folia ternata (foliola subimpunctata, epidermide inferiore interdum 

 non crystallophora) ; sepala sicca striato-costata (sp. antillano- 

 continentalis cisaequatorialis) . . . . 5. P. Cururu L. em. 

 ßß. Folia 5-foliolato-pinnata (rarissime depauperata) 



* Foliola serrato-dentata, sparsim pellucide punctata et lineo- 

 lata; sepala non vel vix costata (sp. americano-africana) 



6. P. pinnata L. em. 



** Foliola grosse crenato- vel repando-dentata, impunctata 



(sp. novogranatensis) . . . 7. P. macrophylla Kunth. 



ß. Petiolus rhachisque foliorum nuda (rarissime marginata in P. spicata) 



aa. Folia ternata, in ramulis ultimis interdum 5-foliolato-pinnata 



(foliola subcoriacea, subtransversim venosa, obscure pellucido- 



punctata; sp. peruviano-boliviensis) . 8. P. neglecta Radlk. 



ßß. Folia 5-foliolato-pinnata (rarissime superiora depauperatione 



ternata) 



* Foliola membranacea, obtuse dentata, subimpunctata; thyrsi 

 laxiflori (sp. brasiliensis) ... 9. P. elegans Camb. 



** Foliola chartacea, subrepando-dentata, pellucide punctata et 

 lineolata (epidermide inferiore non crystallophora) ; thyrsi 

 densiflori spiciformes (sp. guianensi-brasiliensi- novograna- 

 tensis) 10. P. spicata Benth. 



b. Corpus lignosum simplex 



aa. Petiolus rhachisque foliorum nuda 



a. Folia ternata; rami teretes (sp. venezuelano-novogranatensis) 



11. P. nitida Kunth. 

 15* 



