140 C. XA1IM\. — MELASTOMACEARUM 



10. D.? guyanensis DC, /. c. — Nonne species afïinis D. ci- 

 liatœ ? 



11. D.? PERUVIANA DC, /. C. 



CXLVI. CENTRONIA. 



Centronia Don, Mem. Wern. soc, IV, 314. — DC, Prod., III, 106. — 

 Endlich., ^p». plant., n° 6181. 



1. Centronia laurifolta Don, l. c, 315. — DC, /. c. 9 106. 



CXLVII. LEIOSTEGIA. 



Leiostegia Bentham in Hook. , Lond. journ. ofbot., Il, 294. — Walpers , 

 Repert., V, 699. — Endlicher, Gen. plant, supp., II, p. 94. 



1. L. vernicosa Benth., /. c. — Walp. , /. c. 



CXLVIII. — SAMŒNTARIA. 



Flos 5-merus. Calycis tubus (saltem fructiferi) ovoideus, ner- 

 vis 10 robustis prominentibus costatus, limbus in lobos 5 rotun- 

 datos brèves denticulo externo tuberculiformi instructos divisus. 

 Petala genitaliaque ignota. Capsula calycis tubo inclusa ejusque 

 dentibus coronata, loculicide 5-valvis, demum in fragmenta se- 

 cedens. Placentœ elongatao sed acolumella parum productœ, un- 

 dique spermophorse. Semina numerosissima minuta linearia aut 

 potius acicularia, embryonem in medio tantum monstrantia. 

 Nervi calycini, parenchymate intermedio soluto,in lignum indu- 

 rati persistentes, apicibus alternatim bifurcis nervulo transverso 

 inter se concatenati et locellum 10-fenestratum fructus formam 

 adhuc retinentem formantes. 



Suffrutex? guyanensis sarmentosus scandens? macrophyllus 

 glabratus, ramis herbaceis teretibus lœvibus; foliis oppositis ovatis 

 acuminatis integerrimis aut tenuiler sinuato-denticulatis bnerviis ; 

 paniculis terminalibus magnis thyrsoideis multifloris. 



Speciei adhucdum indescriptae duo specimina nostra fructifera 

 floribusautem destituta a laudatissimo Candollœo cum Blakea in 



