Mr. J. Miers on the Bignoniacese. 113 



glabris, ad nodos dilatatis; foliis 3-foliolatis aut conjugatis et 



ecirrhosis, foliolis ellipticis, imo obtusiusculis, aut subacutis, 



3-nerviis, apice brevissime attenuatis, obtusis et emarginatis, 



coriaceis, supra pallide viridibus, opacis, costa mediana ner- 



visque subimmersis cano-puberulis, subtus pallide glaucis, 



glaberrimis, nervis venisque valde reticularis, prominen- 



tibus, nervo marginali cartilagineo, reflexo, dense poroso- 



punctulatis, glandulisque paucis immersis signatis; petiolo 



petiolulis paulo longiore cunctis apice tumidulis, teretibus, 



dense et sordide cano-tomentellis ; racemis axillaribus fructi- 



feris, petiolo dimidio longioribus, glauco-tomentosis ; capsula 



compressa, siliquiformi, late lineari, glauca, subtomentosa, 



valvis convexiusculis subcrassis; seminibus plurimis, imbri- 



catis, compressis, testudiniformibus, utrinque in alam opacam 



paulo latiorem expansis. — Prov. Rio de Janeiro, v. s. in herb. 



Mm. Brit. (Itaguahy, in sepibus, A. Cunningham). 



Planta scandens, habitu Adenocalymna comosum aliquomodo 



simulans. Internodii 2^-3 poll. dist. ; petiolus crassiusculus, 



9 lin. long., petioluli laterales 5 lin., terminalis 7 lin. long. ; 



foliola 3 poll, long., If poll, lat., terminale paulo angustius 



et longius ; foliola stipuloidea linearia, erecta, eglandulosa, 



2 lin. long., 1 lin. lat. ; racemi rachis crassiuscula ; pedicellus 



valde incrassatus, 5 lin. long. ; capsula 3^-4 poll, long., 6-7 lin. 



lat., diam. transverso 4 lin.; valvse convexiusculse, lineis 3-4 



abbreviatis ssepius evanescentibus, subcarinatse tuberculisque 



paucis signatse; replum compi-essum, utrinque liberum. Semina 



plurima, transversim elongata, utrinque 1-serialia, compressa, 



disco crasso-coriaceo, testudiniformia, 6 lin. diam., hilo lineari 



submarginali 6 lin. long., inclusis extremitatibus in alas opaco- 



membranaceas expansis 4 lin. lat., 2 poll, longa*. 



Tanaecium. 



This genus is remarkable for the extreme length and narrow- 

 ness of the tube of its corolla, as well as for the peculiar struc- 

 ture of its fruit and seeds. From the evidence here adduced, it 

 will be seen that its structure and affinities have been little under- 

 stood. Dr. Seemann, in a recent monograph of the genus (Hook. 

 Kew Journ. ix. 81), and again in his interesting Synopsis of the 

 Crescentiacea (Linn. Trans, xxiii. 1), follows the example of De- 

 Candolle in placing it in that order : he there adopts the mis- 

 take of preceding botanists in associating with the typical spe- 

 cies the parasitical plant which Swartz had originally, and with 

 much hesitation, conjoined with it; contrary, however, to the 



* This plant, with the analysis of the seed, will be seen in the ' Contri- 

 butions,' Plate 55. 



Ann. fy Mag. N. Hist. Ser. 3. Vol. viii. 8 



