PALMAE juss. (Borassus.) 221 



squamis convexiusculis. Mart. — In sylvis uliginosis, juxta 

 fluvium Japura. (Provincia Rio Negro.) — Caudex 10-12-peda- 

 lis, rectus, inermis, superne plerumque petiolorum amplexicau- 

 lium basibus persistentibus arcte convolutus atque quasi tuni- 

 catus. Petioli 2-3-pedales. Lamina frondium 3-4 spithamas 

 longa. Bacca obovata, vix magnitudine ovi columbac, cervino- 

 fusca, nitida. (Mart.) 



2. L. TENUE Mart. Palm. 51. t. 47. Frondibus flabelli- 

 formi-fissis, bipartitis ; pinnis lanceolatis; spadicibus glabriuscu- 

 lis; spatbis adpressis, lineari-lanceolatis, basi nigro-annulatis ; 

 baccis ellipticis ; squamis planiusculis. Mart. — In sylvis 

 ad Canuma, Provinciae Rio Negro vicum. — Caudex prae- 

 cedentis, sed nonnihil tenuior, 6-8-pedalis, rarius altior. Fron- 

 des 5-6-pedaIes. Spadices 2-3-pedales. Bacca oblongo-cylindrica, 

 magnitudine nucis avellanae majoris; squamis miniato-fuscis, in 

 margine inferiore dilutioribus, in apice ipso nigro-fuscis. (Mart.) 



III. BORASSINAE mart., endl. Ovarium tri-, rarius 

 bi- vel quadriloculare ; ovula solitaria, adscendentia vel re- 

 supinata. Drupa (indivisa vel lobata) tri-, rarius mono-, di-, 

 rarissime tetrapyrena, interduni bacca monosperma. Stamina 

 hypogyna. Fro?ides aut palmato -flabelliformes y pinnis in- 

 duplicatis, aut piunatae vel pinnato -Jindendae, pinnis re- 

 duplicatis. Flores plerumque dioeci^ masculi teoctura 

 quasi glumacea, spadicis foveolis e squamarum coalitione 

 ortis immersi^ sub anthesi emergentes , quasi amentacei. 

 Spathae coriaceae vel sublignescentes , aut incompletae y 

 spadices articulato -vaginantes^ aut rarius completae eos- 

 que omnino cooperietites. 



A. FLABELLIFRONDES. 



BORASSUS Etm.) MART., BNDL. 



Lontarus Rumph. 



Flores dioeci in spadice spathis pluribus incompletis 

 vaginato. Masc. : Amenta cylindrica e coalitione squamarum 

 dense imbricatarum ; flores bracteati, biseriatim in foveis ag- 

 gregati, sensim emergentes. Calyx exterior 3-fidus; interior 

 3-partitus. Stamina 6; filamenta ima basi connata (libera 

 Endl.); antherae sagittatae. Fem. : Amenta pauciora, minus 

 dense squamata; flores intra amenti squamas solitarii, brac- 

 teis binis , quaternis aut pluribus primum omnino obvoluti : 

 Calyx exterior 3-, interior 6-sepalus (6-9-sepalus Endl.); 

 sepalis sibi arcte imbricato-convolutis. Stamina abortiva sex 



