148 KEY AND FLORA 
5. E. Cyparissias L. Cypress SpurGe, Cypress, GRAVEYARD 
Moss. A perennial, in dense clusters 6-12 in. high, from running 
rootstocks. Leaves much crowded, all sessile, the stem leaves linear, 
floral ones broadly heart-shaped. Flower cluster a simple, many- 
rayed wmbel. Glands crescent-shaped. Cemeteries, roadsides, etc., 
escaped from cultivation; also cultivated in old gardens. From 
Europe. 
55. ANACARDIACEH. Sumac FAmILy 
Trees or shrubs, with resinous, acrid, or milky sap. Leaves 
simple, of 5 leaflets or pinnately compound, alternate, with- 
out stipules. Flowers bisexual or unisexual, small. Calyx 
3—-5-parted, persistent. Petals 3-5 or wanting. Stamens as 
many as the sepals or sometimes twice as many, inserted in 
the base of the calyx, distinct. Ovary free, 1-celled; styles 
1-3. Fruit a 1-seeded drupe.* 
RHUS L. 
Trees or shrubs. Leaves of 3 leaflets or odd-pinnate. 
Flowers in spikes or panicles. Calyx mostly 5-parted. Petals 
and stamens 5. Pistil 1, sessile; styles 3, terminal. Fruit 
small, smooth or downy.* 
1. R.typhina L. Srac-IIorn Sumac. A small tree, 20-40 ft. high ; 
branches and petioles closely velvety-hairy. Leaves odd-pinnate, 
leaflets 17-27, lanceolate-oblong, taper-pointed at the apex, very 
obtuse at the hase, sharply serrate, smooth above, pale and downy 
beneath. Flowers somewhat moncecious, in dense terminal panicles. 
Fruit red, with erimson hairs. Dry hillsides N. and E.* 
2. R. glabra L. Sumac. A shrub or small tree, sometimes 25-30 
ft. high; branches downy. Leaves odd-pinnate, main midrib downy 
and wing-margined; leaflets 9-21, ovate-lanceolate, acute at the apex, 
inequilateral, entire or slightly toothed, smooth and green above, 
pale and downy beneath. Panicle often large and spreading ; flowers 
somewhat moncecious. Fruit red, hairy, acid. Open woods. 
3. R. Vernix L. Potson Sumac, Porson Dogwoop. A. very 
smooth shrub with gray bark, 6-18 ft. high. Leaves large and 
glossy, with 7-13 obovate-oblong, entire leaflets. Flower clusters 
loosely flowered, axillary panicles. Fruit smooth, greenish-yellow. 
Swamps and wet openings in woods N. and E. Plant more poison- 
ous than the following species, 
