Asclepias. PENTANDRIA DIGYNIA. 47 
Flos Siamicus. Rumph. Amb. 7. t. 26 f. 1. 
Mal. Tonki, or Tonkin, 
Cynanchium odoratissimum. Lour. Cochin. Ch. 164. 
Beng. Kunja-luta, 
The Telingas have no name for it. , 
Eng. West coast creeper. 
This plant is said to have been originally introducd 
into our gardens from Sumatra, where it continues to be 
carefully cultivated ; hence its English name, the West. 
side of that Island on which we have our settlements, be- 
. ing generally called in India, amongst the English, the 
West coast. . 
For my part I cannot well consider this plant as a-spe- 
cies of Pergularia ; it seems to uuite the character of this 
genus with that of Asclepias. |The nectary which I be- 
lieve is the most essential part, is that of the latter ; and 
the corol that of the former. At all events I consider it 
asa perfectly distinct species from P. tomentosa ; on ac- 
count therefore of the exquisite fragrance of its flowers, I 
call it odoratissima, It is in flower from the beginning of 
the hot, till near the end of the wet season. The Root con-., 
sists of many, horizontal, crooked, ramifications, covered 
with thick spongy bark. 
Stems twining, wood y. Bark deeply cracked, il cor- 
ky on the old parts ; smooth, ash-coloured on the young- 
er, jointed ; where the joints rest on the ground they 
strike root ; young, tender shoots slightly downy. Leaves 
opposite, petioled, cordate, waved, sharp-pointed, entire ; 
when young a little downy, aboui four inches long, and 
three broad, Petioles round, about an inch long. Umbels 
axillary, solitary, alternate, shorter than the leaves, ma- 
ny-flowered. Bractes lanceolate, Flowers middle-sized, 
yellow, or orange coloured, exeedingly fragrant. Calyx 
‘five cleft ; divisions waved, permanent, Corol ; tube per. 
bous, longer than the calyx; inside covered with soft — 
down, Border spreading ; divisions cbtiqualy-snmeie# 
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