76 
XIX. RUTACE2E 
XIX. RUTACE^ 
Herbs, shrubs or small trees, often spinous, all parts more or less 
charged with aromatic glands. Leaves alternate, pinnate or 
simple ; stipules none. Flowers regular, usually 2-sexual, in 
panicles or racemes. Calyx small, 4- or 5-lobed. Petals 4 or 5, 
none in Zanthoxylum , free, usually imbricate. Stamens 5-10, 
numerous in JEgle, free, anthers 2-celled. Disk cup-shaped or 
a fleshy, cushion-like ring or inconspicuous. Ovary ovoid, 2-5- 
celled, many-celled in JEgle ; ovules 1-8, many in JEgle, in each 
cell. Styles Usually united, stigmas terminal. Fruit a capsule, 
berry or drupe, or the carpels separating when ripe. Seeds 
small. — A large Order containing among other useful plants the 
Orange, Lime, Citron, Shaddock and Pummeloe; the name is 
taken from the typical genus Buta, Rue. 
Herbs. 
Flowers 1 in. long. Leaflets 1- f in., entire . 
Flowers 1-1§ in. long. Leaflets 2-4 in., toothed 
Shrubs or small trees. 
Leaves oblong-lanceolate .... 
Leaves pinnate. Leaflets 3-21. 
Leaf-stalks winged. 
Flowers yellow. Petals none 
Flowers white. Petals 4 
Leaf-stalks not winged. 
Leaflets 11-21. Stamens 10 
Leaflets 3-5. Stamens numerous 
1. Bcenninghausenia. 
2. Dictamnus. 
4. Skimmia. 
3. Zanthoxylum. 
6. Limonia. 
5. Murray a. 
7. jflgle. 
1. BCENNINGHATJSENIA. In honour of Freiherr von Boen- 
ninghausen, a German botanist. — Mountains of N. India to China 
and Japan. Only the following species. 
Bcenninghausenia albiflora, Beichenb . ; FI. Br. Ind. i. 486. A 
perennial, nearly glabrous herb. Stems erect, 1-2 ft., branching. 
Leaves gland-dotted, 2-pinnate; leaflets ovate, J-J in., entire. 
Flowers 2-sexual, white, about \ in. long, in a terminal, leafy 
panicle. Calyx short, 4-lobed, persistent. Petals 4, much longer 
than the calyx, oblong, soon falling off. Stamens 6-8, unequal, 
inserted outside the base of a cup-shaped disk. Ovary 3-5-celled, 
stalked, lobed ; styles 3-5, united, stigmas minute ; ovules 6-8 in 
each cell. When ripe the carpels separate as small, several-seeded, 
distinct fruits. (Fig. 24.) 
Simla, common in woods; July-September.— Temperate Himalaya, 4000- 
8000 ft. — Japan. 
The crushed leaves have a strong, disagreeable smell. The plant is known 
among the hillmen as pissu mar, the flea killer. 
