26 Descriptions of Plants belonging to the Genus Hoy a. 



distinct veins of rather lighter colour than the leaf, from 

 which smaller veins occasionally branch off. The petioles 

 are not particularly thick, and less than half an inch long ; 

 they are of the same colour as the stems. The umbels are 

 globose, producing very beautiful pale flowers with the same 

 waxy appearance as H. carnosa, and smelling like the 

 Peruvian Heliotrope, they are of a yellowish colour. The 

 corolla is slightly downy, and much reflexed. The crown 

 has a pinkish centre. 



The figure annexed is engraved from a drawing made by 

 Mrs. Withers, from the original plant when it first blossomed 

 in 1825. 



V. HOYA TRINERVIS. 



Several of this species formed part of the extensive and 

 valuable collection of Chinese plants brought home for the 

 Horticultural Society, by Mr. John Damper Parks, on board 

 the Lowther Castle East Indiaman, commanded by Captain 

 Thomas Baker, in May, 1824, and they blossomed first in 

 the present year in the Garden at Chiswick. 



The plant has a slender, filiform, gray, stem, producing a 

 few warts and roots. The leaves, vary from two inches and a 

 half to four inches and a half in length, they are oblong, very 

 sharply acuminate, beneath of a pale green, and mottled with 

 small brownish red spots, above light yellowish green, with 

 three prominent veins (whence the specific name) for the most 

 part of the same colour as the leaf, but sometimes paler. The 

 petioles are round and thickly covered with a roughish scaly 

 bark of rather a lighter colour than the stem. The umbels 

 are globose. The flowers are pale greenish yellow, and 



