Tas. 5081. 
PLOCOSTEMMA LASIANTHUM. 
Woolly-flowered Plocostemma. 
Nat. Ord. ASCLEPIADE®.—PENTANDRIA DIGYNIA. 
Gen. Char. PuocostemMa, Bl. Calyx quinquepartitus. Corolla quinquefida, 
patens v. reflexa, intus ad basin stuposa. Corona staminea pentaphylla, gyno- 
stegio subsessili adnata ; foliolis carnosis, erectis, compressis, subtus condupli- 
catis, angulo interiore in dentem anther incumbentem producto. Anthere 
membrana stigmati incumbente terminate. Pollinia basi affixa, erecta, oblonga, 
compressa, hine marginata. Stigma apiculatum. Folliculi . . .—Frutices Archi- 
pelagi Indici, volubiles ; foliis oppositis, coriaceis, subvenosis, glabris ; umbellis pe- 
dunculatis, terminalibus v. interpetiolaribus, multifloris. Bl. 
PiocostemMa lasianthum ; foliis ovalibus breviter cuspidato-acuminatis venosis, 
umbellis longe pedunculatis pendentibus, corolla reflexa intus ad basin dense 
stuposa. ud 
PLocosremma lasianthum. Blume in Rumphia, v. 4. p- 30 ; Mus. Bot: Iugd.-Bat. 
v. 1. p. 60. f. 14. ee 
Hoya lasiantha. Herb. Korthals. (Blume). 
We are favoured with this remarkable Asclepiadeous plant by 
Mr. Low, of the Clapton Nursery, who imported it from Borneo. 
It proves to be a genus of the family allied to Hoya which 
Professor Blume has lately established in his ‘Rumphia, and 
figured in his valuable ‘Museum Botanicum Lugduno-Batavorum, 
differing from Hoya, but having the foliola of the staminal crown 
erect, compressed, conduplicate beneath, and the corolla at the 
base within densely woolly. The author characterizes two spe- 
cies, both natives of the Malay Islands ; the present one peculiar, 
as far as yet known, to Borneo. It flowers with us 1n July. 
Descr. A long-stemmed, climbing shrub, with quite the habit — 
of a Hoya ; the branches terete, dark-green, glabrous, as in every 
part of the plant, save the corolla. Leaves opposite, petiolate, a 
span long, oval, or rather ovate, subcordate at the base, apiculato- 
acuminate, thick, fleshy, dark-green, especially above, with occa- 
sionally a few pale blotches, veined ; principal veins very distinct 
in the recent leaf. Petiole about an inch long, terete. Peduncle 
NOVEMBER Ist, 1858. 
