— 169 — 



nuatum; flores pallide lutei. Calycis tubus in pedicellum gradatim atte- 

 nuatus; sepala lanceolata, sub anthesim reflexa, plus minusve cohrerentia. 

 trinervia, dorso fulvo-pilosa. Petala 5, valde exserta, majuscula, ungue 

 filiformi, centimetralia et ultra, pilosissima; lamina elliptica. abrupte ad 

 unguem constricta, utrinque pilosa, ad marginem corrugata. Stamina 

 fertilia 2, filamento dense ferrugineo-hirto, antheris ellipticis, dorso pilo- 

 sis, rimis dehiscentibus; st. sterilia 7-8, glabra, duplo minora, antheris 

 imperfectis vel obsoletis. Germen hirsutum, stipitatum; stipes cum stylo 

 pilosus; stigma parvum; ovula 7. Fructus... — Folia 7-10 cm. longa, 8-10 

 lata, petiolo 4-7 cm. longo. Inflorescentia j-i3 cm. longa, 6-i5 cm. lata, 

 pedicellisusque 7 cm.longis, bracteis8-io mm., bracteolis 6-7 mm.longis, 

 aiabastro 8-9 mm. longo. Petala 2 cm. et ultra longa, ungue 1 cm. circiter 

 longo. Stamina fertilia 1 5 - 1 8 mm. alta. 



Laos : Attopeu, mars 1877, n° KS40 [Harmand]. Cochin- 

 chine : Phu-quoc, janvier 1874, n° 1399 [Pierre], 



3. B. Bonii Gagnep., sp. n. 



Scandens. Rami graciles, lœvissimi, glaberrimi, cirris gracilibus, parce 

 pilosis, pilis appressis. Folia triangula vel ovato-orbicularia, basi truncata 

 vel pœne cordata, apice obtusa, paene vel haud emarginata, glaberrima, 

 firma ; nervi 7, tenues, secundarii ab ultimis vix distincti, cum iis rete 

 tenue efformantes; petiolus gracilis, glaber. Inflorescentia racemosa, rufo- 

 pilosa, pilis appressis; pedicelli inter se œquales, supra basim bibracteo- 

 lati, bracteis et bracteolis lineari-acuminatis, sat persistentibus, aiabastro 

 elliptico (cum tubo'i obtuso; floribus albidis. Calycis tubus brevis, turbi- 

 natus ; sepala ovato-acuta, dorso pilosa, pilis parcis appressis, intus gla- 

 bra. Petala dorso pilosa, ad tertium unguiculata; lamina elliptica. Sta- 

 mina fertilia 3, vix exserta, filamento glabro; anthera elliptica vel oblonga, 

 rimis 2 dehiscens. Germen subsessile, basi et margine pilosum, stylo sub- 

 glabro, stigmate obtuso, vix capitato. Fructus... — Folia 35-70 mm. longa, 

 3o-55 mm. lata, petiolo i5 mm. longo. Inflorescentia 5-io cm. longa, 

 2 cm. lata, pedicellis 5 mm. longis, 2-5 mm. remotis, aiabastro (cum 

 tubo) 5 mm. longo. Calycis tubus i,5 mm. longus; sepala 3 mm. longa. 

 Petala (in aiabastro) 2,5-3 mm. longa. Germen (post anthesimi cum stylo 

 5 mm. longum. 



Tonkin : Kien-khé, n" 3 2336, 2751 ; Vo-xa, n os 2822 et 283g 

 [Bon], 



4. B. calycina Pierre mss., sp. n. 



Rami rufo-villosi, vix sulcati, cirris pilosis. Folia ovato-cordata, intégra, 

 apice acuminata vel rotunda, sœpe mucronata, supra nitida glabriuscu- 



