308 PROCEEDINGS OF THE AMERICAN ACADEMY 



10. CinchonecB. 



The following are two new genera of this subtribe in the collection 

 of the South Sea Exploring Expedition ; one of them founded upon 

 Forster's Cinchona corymhifera, the other upon new discoveries. 



BADUSA, Nov. Gen. 



Calyx tubo clavato ; limbo brevi cupulato 5-dentato persistente. 

 Corolla hypocraterimorpha, glabra, 5-fida ; limbo tubum adasquante, 

 lobis lineari-oblongis aestivatione contorto-imbricatis (uno exteriore), 

 explicatis patenti-recurvis. Stamina 5, exserta : filamenta filiformia, 

 imge basi corollge inserta, inferne villosa ; antherge lineares, dorso supra 

 basim affixje, mox versatiles. Stylus filiformis, ramis 2 brevibus cum 

 stigmatibus subcapitatis intus planis in clavellam angulatam congluti- 

 natis. Ovarium biloculare. Ovula in placentis lineari-oblongis crassis 

 plurima, anatropa, sese imbricantia, superiora adscendentia, inferiora 

 pendula. Capsula clavato-oblonga, cartilaginea, bilocularis, polysperma, 

 ab apice ad basim septicida. Semina ovalia, modice alata. Embryo 

 rectus albumine carnoso paullo brevior; radicula tereti cotyledonibus 

 ovatis longiore. Frutices sempervirentes ? Oceanici, glabri ; stipulis 

 brevibus vaginatis ; pedunculis axillaribus apice foliatis cymoso-pluri- 

 floris ; floribus albis. 



Badusa cortbibifera. Cinchona corymbifera, Forst. C. Philip- 

 pica, Cav. ? Exostemma, R. S^ S. — Distinguished from Exosteina by 

 the aestivation, the versatile anthers, and the inflorescence. 



DOLICHOLOBIUM, Nov. Gen. 



Calyx tubo cylindrico elongato ; limbo amplo submembranaceo cya- 

 thiformi truncato integerrimo (rariusve sublobato) persistente. Corolla 

 hypocraterimorpha ; limbo 4 - 5-partito, lobis oblongis obtusissimis 

 plurinerviis aestivatione contortis. Stamina 4-5, tubo infra faucem 

 inserta, glabra, inclusa: filamenta brevissima : antheras lineares, basifixaj, 

 introrsum adnatce. Stylus bifidus, ramis subspathulatis sursum peta- 

 loideo-dilatatis intus secus costam stigmatosis. Ovarium biloculare. 

 Ovula in placentis elongatis crassis numerosissima, minuta, sursum. im- 

 bricata, acicularia. Capsula siliquajformis, teretia, longissima (4 - 6- 

 pollicaris), calycis limbo crateriformi seu pateriformi (fructu multoties 

 latiori) plerumque coronata, demum septicida ? Semina creberrima, 

 nucleo ovali, a^a angustg, utrinque in caudam simplicem longissimam 

 sensim attenuata. Embryo in albumine parco carnoso rectus ; cotyle- 



