34 DR. B. SEEMANN ON THE CRESCENTIACE^E. 
Phyllarthron Thouarsianum, DeCand. Prodr. ix. p. 244 (1845). 
Geogr. Distr. Madagascar (Petit-Thouars \ in Herb. Juss. et Par.). 
There is no evidence to show that this plant is a genuine species of Phyllarthron, or 
even a Crescentiacea, as neither the flowers nor the fruit of it are known. "Folia 
abrupte pinnata " only occur once among Crescentiacece, and in that instance {Kigelia pin- 
nata, DeCand.) by abortion. Amongst the genuine Bignoniacea? such leaves are known 
in only one imperfectly described species, Bignonia bijuga, Yahl, which, like Ph. Thouar- 
sicmum, is a native of Madagascar, and may possibly prove identical with it. 
3. Tan^citjm, Swartz. 
Calyx persistens, globoso-cylindraceus, obsolete 5-dentatus. Corolla tubulosa, infundibuliformis, limbo 
5-fido subaequali, lobis tubo brevioribus, 2 superioribus erectis approximates paulum minoribus, 
inferioribus patentibus. Stamina 4, didynama, cum rudimento quinti ; anthera 2-loculares, loculis 
divergentibus. Discus glandulosus ovarii basin cingens. Stylus elongatus ; stigma bilamellatum. 
Ovarium unilocular^ niultiovulatum, placentis parietalibus. Bacca oblonga vel globosa, cortice 
fragiliter corticosa, 1- vel spurie 2-locularis. Semina plurima, compressa aut angulata, in pulpa nidu- 
lantia; albumen nullum. 
Frut 
trifoliolatis vel germinatis cum 
mosis vel naniculatis axillaribus 
roseis, violaceis vel lilacinis ; baccis ferrugineis vel nigris. 
72 
Hook. Journ. and Kew Misc 
Miquel in Bot. Zeit. ii. p. 788 
Besleria sp.^ Aubl. 
Citharexylon sp.^ Linn. 
Amongst the various species from time to time referred to this genus, there are three 
which must be excluded. Tancecium ? paniculatum, Sieb. is a Bignoniacea proper (Arra- 
bidcea paniculata, Seem. *) ; Tancecium pinnatum, Willd. is identical with Kigelia pinnata, 
DeCand. ; and T. tripinna, Baeusch, a synonym of Colea tripinnata 3 Seem. Having 
added two new ones (T. crucigerum, Seem, and T. lilacinum, 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 
albiflorum, the latter by T. parasiticum and lilacinum. T. crucigerum is the old Bignonia 
crucigera of Linnaeus, well figured in Burmann's edition of Plumier's work ; T. albiflorum, 
DeCand. is the T. Jaroba of Swartz, the alteration of its name having become neces- 
* Arrabidaa paniculata, Seem. MSS. {Tanceciuml paniculatum, Sieb.! Flor. Martinic. n. 81 ; DeCand. Prodr. 
ix. p. 245 : 1845) ! rarois teretibus glabris, foliis oppositis petiolatis 3-foliolatis, foliolo medio ovali maximo, lateralibus 
minimis, junioribus velutinis adultis glabris, paniculis axillaribus laxe tricbotomis, pedunculis ramulisque compressis, 
minutissime puberulis, calyce cupuliformi, breriter 5-dentato, sequali, corolla apice pulverulento-yelutina ; fructus 
(v. sp. s. in Herb. Vindob.) Martinica (Sieb. ! Fl. Martin, n. 81). 
