CONTRIBUTIONS TO BOTANY. 
83 
fei’is, petiolo dimidio longioribus, glauco-tomentosis ; capsula 
compressa, siliquiformi, late lineari, glauca, subtomentosa, 
valvis convexiusculis subcrassis; seminibus plurimis, imbri- 
catis, compressis, testudiuiformibus, utrinque in alam opacara 
paulo latiorem expansis. — Prov. Rio de Janeiro, v. s. in herb. 
Mus. 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 3f^ poll, long., 6-7 lin. 
lat., diam. trausverso 4 lin. ; valvse convexiusculse, lineis 3-4 
abbreviatis ssepius evanescentibus, subcarinat* tuberculisque 
paucis signatae; replum compressum, 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. Prom 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 
Crescentiacece (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 
diagnoses of DeCandolle, he has been led into the further 
misconception of ascribing to Tanaecium a unilocular ovary and 
fruit — a structure which I find quite foreign to it. I agree, 
however, with Dr. Seemann in his conclusion that the Tanaecium 
parasiticum, Sw., to which I have just alluded, is congeneric 
with the Schlegelia lilacina, Miq., a genus unquestionably be- 
longing to Crescentiacece. Willdenow associated with Tanaecium 
Jaroba, Sw., not only T. parasiticum, Sw., but Crescentia pinnata, 
Jacq. As in these two plants the seeds are imbedded in pulp, 
it was then first incorrectly assumed that the fruit of T. Jaroba 
* This plant, with the analysis of the seed, will be seen in Plate 55. 
M 2 
