THE FLORA HONGKONGENSIS. 115 
and generally rather more distinct obliquity of the calyx in the 
former to distinguish the two, I do not think they can be kept 
separate, not being, in fact, natural genera. 
*Centranthera hispida, R. Br. 
In every fresh specimen I have examined from Hongkong, the 
neighbourhood of Canton, or Amoy, in all which localities I have 
myself gathered it, I have found the corolla of a dull ochreous 
yellow with reddish-brown blotches inside. 
27. Siphonostegia chinensis, Benth. in DC. Prod. x. 538; Hook. and 
Arn. Bot. Beech. t. 44. 
Found by the late Dr. Harland and myself in July 1856, grow- 
ing abundantly on moist grassy slopes by the sea near West 
Point; but I am not aware that it has been collected by others, 
and I have not myself met with it since in the island. Extends 
into Northern China, the Amur territory, and Japan. 
*Utricularia exoleta, R. Br.; Benth. Fl. Austr. iv. 526. (=U. 
diantha, Roem. and Schult.; Benth. Fl. Hongk. 256.) 
28. Calosanthes indica, Blume; DC. Prod. ix. 177. 
In ravines on the northern side of the island, above Head- 
Quarter House. Occurs in India, chiefly near the coast, the 
Malayan islands, and Cochinchina. 1 have no specimens of this 
in my herbarium; but have seen fresh flowering ones and copious 
fruits gathered by Captain Maclean, formerly Military Secretary 
in Hongkong. 
*Barleria cristata, Zinn. 
The late Dr. Thomas Anderson, in his “ Enumeration of Indian 
Acanthaceæ” (Journ. Linn. Soc. ix. 491), gives Hongkong and 
Canton as localities, with the remark “ certissime ex hortis!" 
There is no reason offered for this very decided opinion ; and the 
plant is not by any means common in Hongkong, occurring, for 
the most part, on the south side ofthe island: but I see no ground 
for doubting its being a genuine native. As to Whampoa and 
Canton, I can speak with greater confidence. It there occurs, 
in Danes’ Island and in the low undulating hills to the north of 
the city, mingled with Symplocos sinica, Ait., Bambusa flexuosa, 
Munro, Scolopia chinensis, Clos, Sageretia theezans, Brongn., Rosa 
Brunonis, Lindl., Berchemia lineata, DC., and other ordinary 
plants, and has indubitably an equally good claim to be regarded 
as indigenous. I may add that I have never, during my long re- 
sidence in China, seen the plant cultivated in a Chinese garden. 
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