293 



[TAB. LXIL] 



ON A NEW GENUS OF THE NATURAL ORDER 

 OF TILIACE^, FROM THE ISLAND OF MA- 

 DAGASCAR. 



Communicated by Professor Bojer of the Mauritius. 



VINCENTIA TRIFLORA. 



Polyandria Monogynia. Nat. Ord. Tiliace^e. 



Gen. Char. Cal. 5-sepalus, sepalis reflexis, tortuosis, de- 

 mum deciduis. Cor. pentapetala. Petala 5, apice bifida, 

 basi squama instructa. Torus pentagonus. Stam. nu- 

 merosa, libera, tore stipitiformi inserta. Germen 1, 

 ovatum, hispidum. Stylus I, persistens. Stigma 4- 

 fidum. Capsula globosa, indehiscens, (vel drupa sicca,) 

 4-pyrena. Nuces loculis 5, vel, abortu, uniloculares, 

 monospermse. Semina horizontalia, pyriformia, compressa. 

 Albumen 0. Cotyledones planae. Radicula ad hilum 

 seminis versa. Bojer. 



Vincentia triflora, Bojer, MSS. (Tab. LXIL) 



Crescit in sylvis depressis ad ripas fluminis Marou-voaii 

 dicti in sinu Bombatac, ad eras occidentales Insula^ Ma- 

 dagascar. Bojer. 



Arbor procera, non rare 30-pedalis, et ultra, facie Ulmi cam- 

 pestris. Truncus brevis, cortice crasso donatus, ut in 

 Tilia europcea, valde ramosus. Rami alterni, elongati, 

 patentes vel penduli, versus apices flexuosi et virides, 

 glabri. StipulcB subulatse, deciduae. Folia alterna, petio- 

 lata, ovali-oblonga, juniora longe acuminata, grosse ser- 

 rata, basi obtusa ; adultiora magis cordata, undulata, 

 4-pollicaria, 2 uncias lata, glaberrima, nitida, basi trinervia, 

 venisque minutis transversalibus, supra viridia, subtus 

 pallidiora, venaeque magis prominentes. Petioli brevius- 

 culi, graciles. Pedunculi axillares, solitarii vel bini, apice 

 triflori. Flores pedicellati, terni, ante florationem bractea 

 late ovata, membranacea, nitida inclusa. Alabastra oblonga, 



