CONTllIBUTIONS TO BOTANY. 
247 
Deo river, in Dewangiri, at the foot of the Bhootan Mountains ; 
and the ? on Mount Panukka, at an elevation of nearly 6000 ft. 
In hahit it has no resemblance to any species of Cyclea, to which 
the ? plant was referred by the authors of the ‘ Flora Indica,' 
and bears an aspect very different from that of any species of 
the CissampelidecE, to which section it evidently belongs. The 
wood of its scandent branches, which are ^ inch in diameter, is 
very hard and exhibits the peculiar structure of the order ; the 
branchlets are twining, 5 inch thick, with axils f-lj inch apart; 
the leaves are 5-7 inches long, inches broad, with a basal 
sinus terminating in a more or less acute angle, |-1 inch deep ; 
the petiole is extremely thickened and tortuous at its base, 
inches long, and inserted ^-1 line within the margin of the 
contracted sinus. Several ^ panicles are fasciculated in the 
aphyllous nodes of the older bi’auches; they are about 1 |- inch 
long, the alternate branches | inch long, whose approximated 
branchlets, each bearing five or six flowers, altogether form a 
corymbulose head; the calyx is glabrous and J line in dia- 
meter. The ? racemose panicles grow out of the denuded nodes 
of the older branches, or out of the leaf-bearing axils in the 
younger branches; when single, they are 7 inches long, when 
geminate or fasciculated upon annotinous bare wood, they 
are 3-5 inches long, with spreading ramifications 3 lines apart 
and 9 lines long ; the bracts are subulately linear, I line long, 
and very pilose ; the pedicels ai’e 1 line long, quite glabrous, 
tumid at the apex ; the sepals are 1 line long and broad, fleshy, 
glabrous, formed like a deep pouch with its upper margin 
somewhat truncated and reflexed, persistent when the ovary is 
abortive, but caducous after it is fertilized ; the ovary is shorter 
than the sepals, and seated between their claws; the drupe is 
fleshy, smaller than a pea, with the persistent style near the 
point of attachment; the putamen is If inch long, nearly orbi- 
cular, compressed, with many hamately truncated, short, erect, 
obtuse spines in three concentric series on eaeh face, surround- 
ing the laminiform imperforated condyle. This form of putamen 
is different from that of Cissampelos or Pericampylus, and stiil 
more unlike that of Cyclea. 
The flowers in the eartouch fixed on the sheet of one of the 
above specimens belong to Cyclea laxifiora. 
33. Perichasma. 
1 propose this genus for a plant, belonging to the tropical 
African flora, which offers many peculiar characters. Although 
the number of its floral parts corresponds with that of Stephania, 
