14 DR. B. SEEMANN ON THE CRESCENTIACE^. 



PhyUarthron Thouamiammi, DeCand. Prodr. is. p. 244 (1845). 

 Geoffr. Disir. Madagascar {Peiit-Thouarsl in Herb. Juss. et Par.). 



There is no eAddence to show that this plant is a genuine species of JPhyllarthron, or 

 even a Crescentiacea, as neither the flowers nor the fruit of it are known. " Polia 

 abrupte pinnata " only occur once among Crescentiacece, and in that instance {Kigelia pin- 

 nata, DeCand.) by abortion. Amongst the genuine Bignoniacece such leaves are known 

 in only one imperfectly described species, Bignonia hijuga, Yahl, which, like Bh. Thouar- 

 sianum, is a native of Madagascar, and may possibly prove identical with it. 



3. Tan.ecitjm, Swartz. 



Calyx persistens, globoso-cylindraceus, obsolete 5-dentatus. Corolla tubulosa, infundibuliformis, limbo 

 5-fido subasquali, lobis tubo brevioribus, 2 superioribus erectis approximatis paulum minoribus, 

 inferioribus patentibus. Stamina 4, didynama, cum rudimento quinti ; antherm 2-loculares, loculis 

 divergentibus. Discus glandulosus ovarii basin cingens. Stylus elongatus ; stigma bilamellatum. 

 Ovarium uniloculare, raultiovulatum, placentis parietalibus. Bacca oblonga vel globosa, cortice 

 fragiliter corticosa, 1- vel spuria 2-locularis. Semina plurima, compressa aut angulata, in pulpa nidu- 

 lantia; albumen nullum. 



Frutices America tropica scandentes, ssepe radicantes ; foliis oppositis petiolatis simplicibus integerrimis, 

 trifoliolatis vel germinatis cum cirrho intermedio; foliolis petiolulatis integerrimis; floribus race- 

 mosis vel paniculatis axillaribus et terminalibus bracteatis bracteolatisque, corollis albis, coccineis, 

 roseis, violaceis vel lilacinis ; baccis ferrugineis vel nigris. 



Tanacium, Swartz, Prodr. ii. p. 9; Fl. Ind. Occ. ii. p. 1049 ; Endl. Gen. Plant, n. 4172 ; DeCand. Prodr. 

 ix. p. 245 ; Seem, in Bonpl. iv. p. 126, et in Hook. Journ. and Kew Misc. ix. p. 82. 



Schlegelia, Miquel in Bot. Zeit. ii. p. 788. 



BeslericB sp., Aubl. 



Citharexylon sp., Linn. 



Amongst the various species from time to time referred to this genus, there are three 

 which must be excluded. Tanceciuni ? pcmiculatum, Sieb. is a Bignoniacea proper (Arra- 

 biclcea paniculcda, Seem. *) ; Tcmceckt/m pinnatum, Willd. is identical with Kigelia pinnata, 

 IDeCand. ; and T. tripinna, Raeusch, a synonym of Colea tripinnata, Seem. Having 

 added two new ones {T. crucigerum, Seem, and T. lilaciniim. Seem.), the genus now con- 

 sists of four well-defined species, which arrange themselves into two very natural groups, 

 — the one having non-rooting branches, compound ecoriaceous leaves, and white pubescent 

 corollas ; the other rooting branches, simple coriaceous leaves, and glabrous corollas of a 

 scarlet, pink, or more or less bluish tint. The former is represented by T. crucigerum and 

 albijlorimi, the latter by T. parasiticmn and Ulacimmi. T. cruciget^nm is the old Bignonia 

 cmcigera of Linnseus, well figured in Burmann's edition of Plumier's work ; T. albifloriim, 

 DeCand. is the T. Jaroba of Swartz, the alteration of its name having become neces- 



* Arrabida-a panindata, Seem. MSS. {Tanceciuml paniculafum, Sieb.! Flor. Martinic. n. 81 ; DeCand. Prodr. 

 ix. p. 245 : 1845) ! ramis teretibus glabris, foliis oppositis petiolatis 3-foliolatis, foliolo medio ovali maximo, lateralibus 

 minimis, junioribiis velutinis adultis glabris, paniculis axillaribus laxe trichotomis, pedunculis ramulisque compressis, 

 minutissime puberulis, calyce cupnliformi, breviter 5-deiitato, sequali, corolla apice pulverulento-velutina ; fructus .... 

 (v. sp. s. in Herb. Vindob.) Martinica (Sieb. ! Fl. Martin, n. 81). 



