FLORA OF THE HAWAIIAN ISLANDS. 177 



panicle, which is often reduced to an umbel of few small white flow- 

 ers. Capsule flat on the top, usually pubescent. 



Scattered more or less abundantly In various parts, trailing over shrubs, or scram- 

 bling among the herbage. A common weed in most tropical regions. The Hawaiian form 

 belongs to the variety with fruits scarcely 3-4' in diameter, often considered as a distinct 

 species (C. microcarpum HBK.;. It is as frequent and widely spread as the form with 

 fruits more than 1' in diameter. 



ORDER XXIII. ANACARDIACE.E. 



Trees or shrubs, with a resinous or milky, often acrid juice, which 

 turns blackish in drying; the leaves alternate, without stipules, and 

 not dotted. Flowers small, often polygamous or dioecious. Calyx of 

 3-5 sepals, inserted on the base of the calyx, or on an hypogynous 

 disk. Ovary one-celled, but with three styles or stigmas ; ovule soli- 

 tary. Fruit a drupe. Seed without albumen. Embryo curved or 

 bent. Many species contain a caustic poison juice, but ours is innoc- 

 uous. To this order belong the Mango (Mangifera Indica'), the Pis- 

 tachio-nut (Pistacia vera'), and the Vi (Spondias dulcis) of the Southern 

 Pacific Islands ; also other edible and useful fruits. 



1. BHUS Linn. 



Sepals, petals, and stamens, 5. Ovary 1-celled, with 3 short styles 

 or stigmas. Ovule 1, suspended from an erect filiform funiculus. 

 Drupe small, oblique, often nearly dry. Eadicle short, curved against 

 the edge of the flat cotyledons. Trees or shrubs. Leaves pinnate, or 

 sometimes simple. 



A large genus, widely distributed over the temperate and tropical parts of the globe, 

 a large proportion at the Cape of Good Hope. 



1. R. SEMIALATUM Murray. (Enum. No. 93.) A shrub or tree, 4- 

 40 high, the stout branches warty, smooth, or, when developing 

 velvety-tomentose, as are the petioles, inflorescence, &c. Leaves pin- 

 nately 5 - 13-foliolate, or the upper ones sometimes trifoliolate. Leaf- 

 lets oval or oblong, obtuse or acuminate, 2'-6' long, l'-4'wide, 

 serrate, almost sessile, downy beneath, glabrous above. Panicle 

 terminal, very large and compound, 6' -12' long (sometimes smaller 

 ones in the upper axils). Flowers small, l" in diameter, yellowish, 

 calyx nearly glabrous, deeply 5-cleft; the lobes oblong-ovate, min- 

 utely ciliate, not half the length of the oval and minutely ciliolate 

 petals. Stamens rather shorter than the petals. Fruit 2" in diam., 

 glabrate. E. Sandwicensis Gray. 



Mountains of Oahu ; West Maui ; near Hilo, Hawaii. 

 COMMUNICATIONS ESSEX INST., VOL. V. 24 DEC., 1867. 



