l'82 F. DELFI XO, 



Limbus niellifer in cacabum pyriforinem conversus 

 ore anguslissimo. 

 Subgenus Byrsophyllum nob. Bractearuin petioli prope ba- 

 sini peduncularimi soluti; limbi bursiformes. Pedun- 

 culi longi in racemum corymbiformem disposili, non 

 secundi. 



ÌU. N. Adamantium Cambess. Rhachis racemi longa^ 

 mulfiflora; saccus mellifer bursiformis. 



\o. N. cuneifolia nob. Racenn rhachis brevis, pauci- 

 flora; saccus mellifer scrotiformis. Thalamus pedun- 

 kim obliquiler secans. 



Tribus II. SYMPHTTADENIAE. 



Bractearuni melliferarum petiolus necnon limbus pednnculis (ste- 

 rilibus) omnino adnalus. Sepala quatuor decussaliui inserta. Petala 

 quinquo in calyptraui eonferruminata. Flores polyandri, ornilhophili. 

 Duo bracleolse opposilse et decussatine calyci aggregala?. 



Genus IV. Marcgravia Plum. Pedunculi florales in racemum umbel- 



Iseformem pendulum disposili; centrales steriles et 



bracteali. Arbusculse hederreformes. 

 Subgenus Ortiiothalamium nob. Thalamus axem pedunculi 



orthogonice secans. Duo bracteolae in apice pedunculi 



sat conspicuse. 

 16. il/ polyantha nob. 



Umbellse graciles 20-40 florse. Pedunculi longissimi, 



folla tenuioria; abilus longe gracilior. 

 i7. M. macrocalypirn nob. 



Umbellse crassse subduodecimflorge. Neclaria brevia 



dorsaliter recla sacciformia. Calyplra oblongo-conica. 

 Subgenus. Plagiothalamiu.m nob. Thalamus axem pedunculi 



obliquissime secans. Duo pedunculorum bracleolse fere 



obliterata! et rudimenlarise. 



