RHUS 393 



R. HENRYI, Diets. 



A deciduous tree, up to 15 ft. high, with a rounded head of branches ; 

 young shoots smooth. Leaves from 10 to 16 ins. long, composed of seven, 

 nine, or eleven leaflets, which are oblong to oblong-lanceolate, obliquely rounded 

 or broadly tapered at the base, tapered at the apex to a fine point ; 2^ to 

 5 ins. long, I to if ins. wide ; margins entire or sparsely toothed, smooth and 

 dark green above, but with a tuft of hairs at the base of the midrib and on 

 the short stalk. Flowers small, produced in June on terminal pyramidal 

 panicles 3 to 7 ins. high, the main and secondary flower-stalks as well as the 

 sepals covered with brown down ; the greenish white petals are also downy 

 outside, and about \ in. long. Fruit rich red, downy, about the size of 

 peppercorns, densely packed in panicles. 



Native of Szechuen in China ; discovered by Henry in 1888. It is a 

 handsome small tree both in its foliage and fruit, very closely allied to the 

 Himalayan R. punjabensis, Stewart. 



R. POTANINII, Maximoiuicz (R. sinica, Hort^ introduced to cultivation 

 about 1907, is probably allied to Henryi and punjabensis, but I have not 

 seen it in flower. It is a vigorous deciduous shrub or small tree, the young 

 shoots at first covered with a dense fine down, ultimately smooth. Leaves 

 10 to 1 8 ins. long, pinnate, composed of seven to eleven, sometimes thirteen, 

 shortly stalked leaflets, which vary in outline from lanceolate to narrowly 

 ovate, entire ; 2 to 5 ins. long, f to 2j ins. wide ; midrib, veins, and margins 

 hairy ; common leaf-stalk covered with close down like the shoots. Fruit 

 reddish, hairy. Native of N. China. 



The true R. SINICA, Diets, lately introduced by Wilson, differs from the 

 plant grown in gardens under that name in having the main leaf-stalk slightly 

 winged, the leaflets stalkless, more crowded, and rounded or truncate at the 

 base (not oblique as in R. Potaninii). Native of China; discovered in 1890 

 by Pere Giraldi. 



R. MICH AlJ XI, Sargent. 



(Garden and Forest, 1895, n g- 550 



A low, deciduous shrub, up to 3^ ft. high, spreading by means of under- 

 ground suckers ; stems erect and rather stout, covered with short hairs. 

 Leaves pinnate, 8 to 12 ins. long, dull green ; leaflets usually eleven, ovate 

 or oblong, i^ to 3 ins. long, rounded and slightly oblique at the base, the 

 terminal one the largest, with a winged stalk, the upper surface hairy, the 

 lower one covered with a dense, yellowish down, the margins coarsely toothed. 

 Panicle erect, terminal, hairy, 6 to 8 ins. high, half as much wide ; flowers 

 ,i in. wide, densely arranged, petals yellow ; calyx covered with grey down. 

 Fruit nearly round, \ in. diameter, scarlet, very downy. 



Native of N. Carolina ; first discovered by Michaux towards the end of 

 the eighteenth century. For about one hundred years it was lost sight of, but 

 was again discovered and re-introduced to cultivation. It was sent to Kew 

 in 1901 from the Biltmore Arboretum, U.S.A., and flowered the same year. 

 According to some authorities it is very poisonous, perhaps the most poisonous 

 of American sumachs, but I have spoken with Americans who regard it 

 as harmless. 



R. OSBECKII, Steudel. 



(R. semialata var. Osbeckii, De Candolk.*) 



A small deciduous tree, sometimes 20 ft. or more high, with a short trunk 

 and a rounded gauntly-branched head ; branchlets yellowish, smooth ; winter 

 II 2 C 



