CONTRIBUTIONS TO BOTANY. 
71 
Kew. There still remains a large amount of new plants to be 
described, or of known species to be better characterized. These 
I leave to abler hands, hoping to see the task elaborated by some 
careful botanist, who, after long and cautious study, may be en- 
abled to schedule the species into sections by subdivisions, so 
as to avoid the necessity for frequent repetition of many essen- 
tial features in the specific characters (now unavoidable), and 
thus render the determination of specimens more easy to the 
student. 
A D E N OC AL Y M N A . 
This genus was first proposed by Prof. Yon IMartius, for a 
group of climbing plants, mostly from intertropical Brazil, which 
are distinguished by the presence of peculiar greenish glands, 
almost constantly upon the calyx, and more rarely upon the 
corolla, whence its generic name. Its branching stems are 
generally rugose, and spotted all over with hollow lenticels, and 
often pitted at the nodes with crowded porous dots. The oppo- 
site leaves are 3-foliolate when the terminal leatiet is somewhat 
larger, or they are conjugate with an intermediate cirrhus, both 
conditions often existing in the same plant. The inflorescence 
is either axillary in short racemes, or it is terminal, when some- 
times, by the abortion of the superior axillary leaves, it forms a 
pyramidal or elongated panicle. At the axils, within the base 
of each petiole, there is constantly seen a pair of simple stipuloid 
leaflets, generally reduced to the size of bracts, which are fur- 
nished with glands similar to those of the calyx. The flowers 
are large and showy, covered with velvety down, and are of a 
dull-yellow colour, or sometimes purple. The fruit has been 
hitherto unknown ; but I was fortunate enough to find it : it is 
very different from that of any other Bignoniaceous genus, both 
in its form and the structure of its seeds. The capsule in the 
two species I met with is quite cylindrical, about 6 inches long, 
and mch in diameter, formed of two thick coriaceous valves, 
which split open along the edges of the flat dissepiment, as in 
all Eubignoniea. The seeds, so remarkable in their form and 
structure, have been described in a preceding page (p.45). 
I have not seen any of the plants referred by DeCandolle to 
his genus Pachyptera, with the floral structure of which he was 
unacquainted ; the genus was established merely on the peculiar 
development of the seed, the expanded margins of which are thick 
and coriaceous, like the central discoid portion. This structure, 
among the Monostictides, occurs onl)', perhaps, in Adenocabjmna , 
the seed of which was not then known ; so that there is some 
probability that the two genera are identical. This opinion is 
