RUB I ACE ^.. 



315 



Hypohathrum {Tricalysia) 

 angolnn.e. 



appearance of a capitule. In Scyphostachijs, native of Ceylon, the 

 floral peduncle, axillary or supra- axillary, terminates in a small spike 

 of tetramerous flowers, with contorted corolla and pauciovulate 

 ovarian cells. But the bracts of the inflorescence, membranous 

 oblique and imbricate, take a large development and closely envelop 

 the flowers before blooming. The fruit is a few-seeded berry. 

 Cancphora (fig. 303), from Madagascar, ordinarily placed in another 

 group, has its small floral cymes united at the end of a common 

 peduncle in the form of flattened branches. The small funnel-shaped 

 4-6-merous corolla is contorted and the two ovarian cells enclose a 

 few ovules. 



The genus Hypohathrum is polymorphous ; the exterior parts are, 

 on a small scale, nearly those of Genipa, and often, like those of 

 Cremaspora, bear on their pedicels one or 

 several pairs of connate bracteoles forming a 

 sort of involucel. The corolla is constantly 

 contorted and the inflorescences are small 

 axillary cymes. But w^hat varies most in 

 the flower is the number of ovules contained 

 in each of the ovarian cells. In the same 

 plant, in fact, may be observed either two 

 ranks of several ovules occupying tbe margins 

 of the placenta, or two ovules only, one to 

 the right, the other on the left, very incom- 

 pletely anatropous, the hilum is ordinarily 

 very near the upper extremity, and the 

 micropyle directed downwards and outwards. 

 Generally also, the less numerous the ovules 

 are in a given cell, the greater is the 



development of the placenta forming for each a small cellule, similar 

 to that of Ixora, in which they are encased. In those of the section 

 Kmiissiella, there is only a single ovule ; the same in Nescidia, 

 Empogona has one or two ; Zygoon, one, two or three, without 

 dilatation of the placenta around them. Tricalysia (fig. 304) 

 generally has from two to ten, and in these the collarettes of the 

 pedicels are generally most developed. In Diplospora, which is 

 Asiatic, there are from two to four ovules or more; and in Hyptianthera, 

 likewise included in this genus, there are ten to twelve in a cell. In 

 all these plants, the fruit is small and fleshy, one- or few-seeded. 



Fig. 304. Flower with 

 ovarian cell open (|). 



