i 



a teibl of ehizophoeace^. 69 



Pellacalyx. 

 Of the single species known of this genus, P. axillaris, Korth., 

 I have seen specimens from Penang, from Phillips's Collection, 

 formerly in the Horticultural Society's herbarium, and among 

 Griffith's Malacca plants. To Korthals's detailed and accurate 

 description I have only to add that the seed, as in GynotrocJies, is 

 small, ovoid, with a crustaceous testa, and a straight cylindrical 

 embryo in the centre of the albumen. The genus is quite distinct 

 both from Carallia and Sa/plopetalum in the form of the calyx and 

 the clustered ovules, as well as in habit and other characters. 



Haplopetalum. 

 I have seen no specimens of this plant ; but A. G-ray's elaborate 

 description and beautiful plate in the ' Botany of the American 

 Exploring Expedition' are sufficient to characterize it in every 

 respect, excepting the fruit, which is unknown. The habit, inflo- 

 rescence and flowers are those of Gynotroclies, except that the 

 petals are sessile and entire, the ovary inferior with a central 

 axis, but not divided into cells, probably from the disappearance 

 of the dissepiments after a very early stage, and that there are but 

 two collateral ovules to each cell. 



G-TIJrOTEOCHES. 



This genus was originally established by Blume in his 'Bijdragen,' 

 but having been referred to Guttiferce, it was very naturally over- 

 looked by Arnott, when describing his Dryptopetalvm. Blume has 

 subsequently, in his ' Museum Botanicum,' established the generic 

 identity of these two plants, which indeed are probably but one 

 species, not uncommon in the Indian Archipelago. The length of 

 the pedicels and number of parts of the ovary and stigmata vary 

 equally in the Javanese, the Penang, and the Malacca specimens. 

 Blume' s third species, however, with minute, almost sessile flowers, 

 from Borneo and Sumatra, is probably distinct. As a genus they 

 differ from Cassipourea (of which they have the inflorescence and 

 most of the characters) by the small deeply -cleft ■ calyx, the 

 ovules 4, not 2 only, to each cell of the capsule, and by the terete 

 embryo. As in Blepharistemma, the flowers of the common species 

 are to a certain degree dioecious ; in some specimens the ovary is 

 slender and empty, whilst the petals and stamens are very fully 

 developed ; in others the ovaries are complete and the petals and 

 stamens more or less reduced. This gives to different specimens 

 a very different aspect, and may explain the differences which 

 induced A. Grray to describe as distinct his G. reticulata from 



