196 



XLI. ANACABDIACE^ 



[Rhus 



C. Leaves simple. 



I. Petals enlarged in fruit. 

 Fruit stalked 

 Fruit sessile .... 



II. Petals not enlarged in fruit, ovar 

 Spurs on petioles . . . 

 Leaves undulate . 



inferior. 



in. 



III. Petals not enlarged in fruit, ovary superior. 



Leaves opposite, entire . . . . .11. 



Leaves opposite, serrate 

 Leaves alternate (see Nothopegia). 

 Stamens twice the number of petals. 

 Drupe on a fleshy hypocarp .... 

 Drupe on the persistent, not enlarged calyx 12 

 Stamens as many as petals, one only fertile . 13, 

 Stamens as many as petals, all fertile. 

 Fl. bisexual, stamens 4-6 . . . .14. 

 Fl. polygamous, stamens 4, leaves some- 

 times opposite . . . . .15 

 Fl. polygamous or dioecious, stamens 5-6, 



drupe on a fleshy hypocarp . . 16, 



Melanoeehcea. 

 swintonia. 



hol1gaena. 

 Deimycaepus. 



BOUEA. 



Dobinea (p. 205). 



Anacaedium (p. 205). 



Buchanania. 



Mangifeea. 



Gluta. 



Nothopegia. 



Semecaepus. 



1. RHUS, Linn. ; Fl. Brit. Ind. ii. 9. 



Trees or shrubs, resin ducts filled with a viscous milky, often caustic juice. 

 L. simple, trifoliolate or imparipinnate. Fl. small, generally dioacious, 

 white or greenish, in axillary or terminal panicles. Calyx small, 4— 6-cleft, 

 persistent, segments imbricate, petals deciduous, equal, imbricate. Disk fleshy, 

 adhering to base of calyx, often 5-lobed, the lobes alternating with stamens 

 and opposite the petals. Ovary 1-celled, styles 3, ovules suspended from a 

 long filiform basal funicle. Fr. a small dry compressed drupe, endocarp 

 coriaceous, crustaceous or bony, the mesocarp often full of resin. Testa thin, 

 membranous, radicle superior, incurved along the edges of the cotyledons 

 (accumbent). Species 120, a few tropical, most in the warmer temperate 

 regions of both hemispheres. 



A. Leaves simple. 



1. R. Cotinus, Linn. ; Brandis F. Fl. 118 ; CoUett Simla Fl. fig. 34.— Syn. 

 R. velutina, Wall. ; Cotinus Coggygria, Scop. ; Engler u. Prantl iii. 5, 164. 

 Vern. Tung, Tunga, Tungla, North- West Himalaya. 



A deciduous shrub or small tree, heartwood dark yellow, mottled. Branchlets, 

 petioles and underside of leaves with short soft pubescence. L. strongly 

 aromatic, entire, obtuse, elliptic or obovate, petiole often longer than leaf. Fl. 

 on slender pedicels in a large hairy panicle, fertile flowers few, the pedicels of the 

 numerous sterile flowers elongate after flowering, they are densely covered with 

 long silky hairs and form a spreading panicle of slender feathery branches. 

 Drupe 1-seeded, obliquely obovate, £ in. long, with prominent veins when ripe. 



Eastei'n slopes of Suleiman range. North- West Himalaya to the Sarda river, 

 3-6,000 ft. Fl. April-June, the red young leaves in April. South Europe, Western 

 Asia, China. 



B. Leaves trifoliolate. 



2. R. parviflora, Eoxb.; Brandis F.F1. 119. Vern. Tumra, Dungla, Ninas, 

 Jauns ; Tunga, Kumaon. 



An unarmed often gregarious shrub, sometimes a small tree. Branchlets. 

 petioles, underside of leaves , and inflorescence clothed with dense brown 

 tomentum. Leaflets obovate, the lower portion entire, the upper irregularly 

 crenate. Terminal leaflet 2-3 in. long, narrowed into a short marginate petiole, 

 the lateral sessile, smaller. Panicle large, terminal, the lower branches from 



