THE FLORA HONGKONGENSIS. 123 
*Excecaria (Triadica) discolor, J. Müll in DC. Prod. xv. 1210. 
(=Stillingia discolor, Champ.; Benth. Fl. Hongk. 303.) 
*Excecaria (Sclerocroton, Parasapium) japonica, J. Miill. in DC. 
Prod. xv. 1217. (=Stillingia japonica, Sieb. and Zucc.; Benth. Fl. 
Hongk. 303.) 
*Excecaria (Euexcecaria, Commia) Agallocha, Linn. ; J. Müll. in 
DC. Prod. xv. 1920. 
A much-branched shrub, 8 to 10 feet high, growing plentifully 
by the side of the path in a salt or brackish marshy spot near 
Tai tum tuk, Z. Sampson, May 19, 1870. Widely spread through- 
out Southern Asia, Ceylon, the Malayan and Philippine Islauds, 
and Eastern Tropical Australia. There is a single sheet only of 
this in Mr. Sampson's herbarium, with flowers of both sexes and 
ripe fruit, but merely half a dozen leaves, the plant being hys- 
teranthous. 
l. Buxus Harlandi, sp. nov. : Ramulis pubescentibes, foliis subsessili- 
bus anguste obovatis apice emarginatis 10-15 lin. longis supra venis 
tenuissimis creberrimis ramosis elevatis notatis, floribus utriusque 
sexus sessilibus, filamentis capillaribus calyce triplo longioribus, an- 
theris duplo longioribus quam latis, ovarii rudimento calycis laciniis 
„obtusis paululum breviore longitrorsum sulcato claviformi nempe 
apice in discum magnum capitatum rugulosum conspicue 4-lobum 
dilatato, stylis ovario paulo longioribus crassis apice valde dilatatis 
bilobis recurvulis medio sulcatis, capsula leviuscula opaca 33 lin. 
longa cornibus ea quadruplo brevioribus apice recurvis. (=B. sem- 
pervirens, Benth. Fl. Hongk. 315, but not of Linneus.) 
In the very rocky bed of the stream above the bridge at Tai tam 
tuk, first discovered by the late Dr. Harland and myself, flowering 
in June, fruiting in October, 1858. Not certainly known to occur 
out of the island (Exsicc. n. 322). By the great development 
of the ovary-rudiment, this is far more nearly allied to B. ja- 
ponica, J. Müll., than to B. sempervirens, Linn.; but it differs by 
its much longer and narrower leaves, longer less stout filaments, 
shorter anthers, and long styles. The horns of the capsule are 
more slender and recurved than in B. sempervirens ; and the very 
delicate closely placed branching veins with which the upper 
surface of the leaves is marked are not found in either. Buxus 
chinensis, Link, cited as a synonym by Mr. Bentham, is Sim- 
mondsia californica, Nutt., placed near Buxus by J. Müller, but 
located in Garryacee by Le Maout and Decaisne (‘Traité Gén. de 
Bot. 255), and doubtfully by Nuttall. Both Baillon and Mueller, 
