76 ANACARDIACE-fi. (CASHEW FAMILY.) 



thing hut "airs from heaven," offer a serious objection to the planting of this 

 ornamental tree near dwellings. 



OKDKR 32. ANACARDIACE^. (CASHEW FAMILY.) 



Trees or shrubs, with a resinous or milky acrid juice, dotless alternate 

 leaves, and small, often polygamous, regular pentandrous flowers, with a 1- 

 celled and 1-ovuled ovary, but with 3 styles or stigmas. Petals imbricated 

 in the bud. Seed borne on a curved stalk that rises from the base of the 

 cell, without albumen. Stipules none. Often poisonous. Represented 

 only by the genus 



1. R H ITS, L. SUMACH. 



Sepals 5. Petals 5. Stamens 5, inserted under the edge or between the lobes 

 of a flattened disk in the bottom of the calyx. Fruit small and iiulehiscent, a 

 sort of dry drupe. Leaves (simple in R. Cotinus, the Smoke-Plant of gardens) 

 usually compound. Flowers greenish- white or yellowish. (The old Greek and 

 Latin name of the genus.) 



$ 1. SIjMAC, DC. Flowers polygamous, in a terminal tJiyrsoid panicle: fruit 

 globular, clothed with acid crimson hairs ; the stone smooth : haves odd-pinnate. 

 (Not poisonous.) 



1. R. typllliia, L. (STAGHORN SUMACH.) Branches and stalks densely 

 velvety-hairy; leaflets 11-31, pale beneath, oblong-lanceolate, pointed, serrate. 

 Hill-sides. June. Shrub or tree 10 -30 high, with orange-colored wood. 



2. R. glabra, L. (SMOOTH SUMACH.) Smooth, somocltut glaucous; 

 leaflets 11-31, whitened beneath, lanceolate-oblong, pointed, serrate. Rocky 

 or barren soil. June, July. Shrub 2 - 12 high. 



3. R. copal Una, L. (DWARF SUMACH.) Brandies and stalks doirny ; 

 petioles wtng-maryined between the 9-21 oblong or ovate-lanceolate leaflets, 

 which are oblique or unequal at the base, smooth and shining above. Rocky 

 hills. July. Shrub l-7 high, with running roots. Leaflets variable, en- 

 tire or sparingly toothed. 



4 2. TOXICOD&NDRON, Tourn. Flowers polygamous, in loose and sl,,id<r 

 axillary paniofa: fruit globular, glabrous, whitish or dun-colored; the stone strintc : 

 leaves odd-pinnate or 3-foliolate, thin. (Poisonous to the touch : even tin ' /'/uriuin, 

 in sunshine affecting some persons.) 



4. R. venenata, DC. (Poison SUMACH or DOGWOOD.) Smooth, 

 or nearly so; lotjhfs 7-13, obovate-oblong, entire. (R. Vernix, L., partly.) 

 Swamps. June. Shrub 6 -18 high. The most poisonous species. Also 

 called, inappropriately, Poison Elder and Poison Dogwood. 



5. R. Toxicodcndron, L. (POISON IVY. POISON OAK.) Climb- 

 ing by rootlets over rocks, &c., or ascending trees ; leaflets 3, r/iottibic-onite, 

 mostly pointed, and rather downy beneath, variously notched or cut-lobed, or 

 entire When climbing trees, it is R. radlcans, L. Thickets, &c. June. 



