760 RUTACEAE 
6. TRIPHASIA Lour. Shrubs. Leaf-blades 3- foliolate: leaflets with 
toothed blades. Flowers portae relatively large. Sepals united. Petals 3 
or 4, narrow, white. Ovary 3- or 4-celled: 
styles elongate, united. Ovules solitary in 
each cavity. a resembling a small 
orange.—One specie 
1. T. trifolia (Burm. f.) P. Wilson. Shru 
mostly 1-2 m. tall: leaflets 3; blades a 
to nearly elliptic, or oval, 1-5 em. long, 
shallowly crenate: calyx-lobes acute: petals 
long: berry ellipsoid to globular- 
Tex. Nat. of E. I. and cult.— 
Spr. 
7. 
3-foliolate, the petiole narrowly winged. Flowers pond on the old wood. 
thinnish, white, with claw-like bases. Ovary 
6-8-celled, pubescent: styles united, decidu- 
Ovules several. Berry many-seeded.— `^ 
One species. 
1. P. trifoliata (L.) Raf. Mun Ads with 
tout thorns: leaflets 2.5-6.5 long; 
blades oval or elliptic, varying t ovate or 
obovate, shallowly toothed, NS sepals 
Tex. and of 
China.—Spr. cus used n: A for grafting oranges; also for hedges 
and ornament. The Pe eel contains a disagreeable-flavored oil and the pulp is 
scanty, but aromatic 
8. CITRUS L. Shrubs or trees with evergreen leaves. Leaf-blades 1- 
foliolate, the petiole often winged. Flowers perfect, axillary. Sepals united. 
Petals 5, or 4-8, thick and wax-like, white, not narrowed at the base. Ovary 
several- a. glabrous: styles united, deciduous.  Ovules several. Berry 
several-seeded.— Several species, natives of Asia, long cult. and ceci) hy- 
bridized. Perhaps the earliest fruit trees introduced in Amer Seeds brought 
over by the Spanish expeditioners were sown in the ue — of Florida 
and in the more remote parts. e descendants of these early introductions 
have since maintained a foothold in the hammocks and in the kitchenmiddens.— 
Plants flower mainly in spr. 
Berry of a globose or subglobose type, not A at the ao 
Petioles broadly winged: berry with a hollow Por . C. Em 
PONCIRUS Raf. Shrubs or trees with deciduous leaves. Leaf-blades 
Petioles slightly winged: berry with a solid e . C. sinensis. 
