M yoporaceae-Rubiaceae. 



olate to obovate pointed glossy leaves which are crowded at the ends of the 

 branches. The flowers, which are of a white or pink color, are borne all along 

 the slender branches and are quite fragrant. 



The dark yellowish green wood becomes very fragrant on drying and re- 

 sembles the odor of true Sandalwood. After the supply of the latter became 

 exhausted in the islands, it was shipped to China as a substitute. The Naio is 

 peculiar to this archipelago, though undoubtedly it must have originated either 

 from Australia or New Zealand, the home of most of the Myoporums. 



Dead trees or old trunks are called Aaka by the natives. 



RUBIACEAE. 



The family Rubiaceae with its 4500 or more species and about 350 genera is 

 a decidedly tropical one. The distribution of its species over Africa, Asia and 

 America is rather even. Polynesia possesses also a large number of species. In 

 the Hawaiian Islands this family is represented by 13 genera of which 4, 

 (Straussia, Bobea, Gouldia and Kadua) are endemic. Eight of the 13 genera 

 have arborescent species while the remaining 5 have shrubby or also herbaceous 

 species only, and are therefore here omitted. A large contingent of the Hawaiian 

 Flora is made up of this family which is the largest next to (Lobelioideae) 

 Campanulaceae and Rutaceae. The family is easily distinguished by its op- 

 posite leaves and interpetiolar stipules. 



KEY TO THE GENERA. 



Ovules many in each cell. 



Ovary 2- rarely 3-4 celled. 



Fruit a bluish-black, indehiscent fleshy berry Gouldia 



Ovary 1-celled. 



Fruit larger globose or pyriform, succulent or dry, crowned with the calycine 



limb Gardenia 



Ovules one in each cell. 



Flowers hermaphrodite or polygamous. 

 Ovary 2 to 10-celled. 



Flowers greenish, the corolla-lobes imbricate in the bud Bobea 



Ovary 2-celled. 



Flowers white fragrant, the corolla lobes valvate Plectronia 



Flowers white small, rotate Straussia 



Flowers larger, white funnel-shaped, drupe crowned by the long calycine 



limb Psychotria 



Ovary 4-celIed. 



Flowers in globose heads; drupes united into a fleshy compound 



fruit Morinda 



Flowers dioecious, stigma bifid to the base, anthers 4 to 11 Coprosma 



GOULDIA Gray. 



Calyx short, cup-shaped, 4-toothed. Corolla salver-shaped, coriaceous, with 4 thick, 

 fleshy lobes and glabrous throat. Stamens 4. inserted in the tuhe or throat. Ovary 

 2-celled; style with 2 filiform branches. Fruit a berry with 2 drupaceous divisions, bisul- 

 cate. Shrubs or small trees with coriaceous leaves and short interpetiolar, caducous 

 stipules. 



429. 



