Euphorbiaceae-A nacardiaceae. 
while in the shaded ravines it becomes a tree 15 to 18 feet in height. It asso- 
ciates with Pittosporum glomeratum, Straussia sp., Psychortia hexandra, Ptero- 
tropia gymnocarpa, Cyrtandra, many Lobelias and other plants peculiar to the 
rain forest, of which this tree is also typical. 
ANACARDIACEAE. 
This family, which consists of 58 genera with over 420 species, reaches its best 
development in the tropical regions of the old and new world, but mainly in the 
Malayan Archipelago. Only a few genera occur in the extra tropical regions of 
the northern and southern hemispheres, as in the Mediterranean, and Manchu- 
rian-Japanese regions, in the forests of North America, and in the Andes region 
of South America. 
Among the most useful members of this family are the Mango (Mangifera 
indica), Wi (Spondias dulcis), Cacheu-nut (Anacardium occidentale) and many 
others. 
RHUS L. 
Flowers polygamous, calyx 5-lobed. Petals longer than the calyx, both imbricate. 
Stamens inserted below a broad discus, with subulate filaments, and ovate anthers, in the 
female flowers often small. Ovary ovate or subglobose, with a single ovule suspended 
from an erect funis; styles terminal 3, free or somewhat united, with truncate or capitate 
stigmas. Drupe g obose or compressed, with thin glabrous or tomentose exocarp. _ Seeds 
ovate or reniform with thin testa.—Shrubs or trees with alternate, simple, trifoliate or 
pinnate leaves, and usually small flowers arranged in compound panicles. 
The genus Rhus has the largest number of species of any genus of the above 
family. It consists of over 120 species and subspecies, and is distributed over 
the tropics, subtropies and temperate zones, but chiefly in South Africa. Sev- 
eral species are found in the Viti (Fiji) and Society Islands. 
The Hawaiian variety of R. semialata differs from the species in having the 
rhachis of the leaf not winged. 
R. semialata extends from the Himalaya Mts. through China to Japan. 
The Japanese Sumach (R. vernix) has been introduced into the islands here. 
Some species of Rhus are poisonous to the touch, others are employed for tan- 
ning and dyeing purposes, 
The Tahitian name of R. Taitensis, peculiar to the South Sea Islands (Samoa, 
Viti, and Tongan Islands) is **Waiwai,’’ in Samoa ‘‘ Tavai.’’ 
Rhus semialata Murr. var. sandwicensis Eng]. 
Neneleau or Neleau. 
A Murr. var. SANDWICENSIS Engl. in DC. Monogr. IV. (1883) 380;— 
Haw. Isl. (1888) 89;—Del Cast. Ill. Fl. Ins. Mar, Pac. VI. (1890) 145;— 
E Engl. et Prantl Pfizfam. III. 5 (1896) 168—R. semialata Murr., Mann 
roe. Am. Acad. VII. (1867) 162, et Fl. Haw. Isl. (1867) 177—Rhus sandwicensis 
) 
Gray Bot. U.S. E. E 1854) 369,— i i O. Ktze Rev. 
anagem (19813 ots 69.—Toxicodendron semialatum (Murr.) O. 
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