25i ME. W. p. HIEEN 0£( THE PECUL1AEITIE3 



ovules In the flower. Monosperinous fruits are also common in 

 the case of the genera with 2-cened and solitarj-ovuled ovaries. 



Tiie fruit is a syncarpium in Sarcoceplialus and Morinda, baccate 

 and indehiscent in the tribes Mussaeudeae, Hameliese, and Grar- 



denieae. 



Mitragyn 



meris, and SpermacoceBe. It consists of pyrenes in the tribes 

 G-uettardete, Vangueriete, Ixoreae, and PsychotriesB ; and it is cap- 

 sular in the tribes Cinchonese and Hedyotideae and in some genera 

 of Kaucleea?, being septicidal in the genera AJina, Uncaria, Oto- 4 



meria, aud Rekistocarpa, and loculicidal in Ht/menodictyon, Gory- 

 nanthe, Crossoptcryx, Fentas, and Virecta; it bursts irregularly 

 at the apex in Argostemma, and dehisces variously in Oldenlandia. 

 In the genus Virecta one valve of the capsule is deciduous, whilst 

 the other valve is persistent. 



The fruit splits up from the base in Siplwmeris and Hypode- 

 matium ; the latter genus differs only by this peculiarity from 

 Spermacoce, the fruit of which is dicoccous, splitting down the 

 middle from the apex. In the genus SipJiomeris the epicarp is 

 membranous and bursts in a valvate manner from the base, and 

 each of the compressed pyrenes hangs from the apex of a filiform 

 exterior column, and the general appearance of the fruit much 

 resembles that of Umbelliferte. 



In Guettarda the endocarp is very hard and woody and more 

 or less lobed ; in Triainolepis the pyrenes are bony. 



The form of the fruit is commonly globular ; it is pisiform in 

 several genera of Mussaendea>, Gardenieje, and Ixorese ; it is large 

 in Amaralia and some species of Handia and Gardenia, fusiform 

 or pyriform in MacrospTiyra and in some species of Oxyanthus and 

 Mitriostigma. It is more or less didymous or dimidiate in Can- 

 tliium and Mitracarpum and in the tribe Galie^. 



The fruit is more or less ribbed longitudinally in the genera 

 Fentas, Otomeria, DiricTiletia, Musscenda, Bertiera, Oxyantlus, 

 many species of FsycTiotria, and Cephaelis. 



The seeds usually afford valuable characters for the determi- 

 nation of genera, but not so good for the higher divisions of the 

 Order. In Oldenlandia Pel tospermum, however, the seeds are 

 orbicular and discoid, whereas in the other species of the genus 

 they are angular. The seeds are furnished at both ends with 

 wings (being extensions of the testa) in the genera Adina, Mitra- 

 gyne, and Uncaria, and in the tribe Cinchonese ; in Uncaria the 

 wings are produced as capillary appendages, In Hymenodictyon 

 pnd Corynanthe the wings are undivided at one end and bipartite 



