Prunus, continued 



Prunus pumila. SAND CHERRY. A shrub with upright 

 branches, 3 to 5 feet tall, growing naturally from Maine 

 and Manitoba, southward to Virginia. Leaves narrow, 

 dull green above, whitened beneath, fading with tones 

 of orange, yellow and red. Flowers white, in numerous 

 clusters, produced in early spring. Fruit dark purple. 



P. triloba. FLOWERING PLUM. A small shrub with 

 downy, broadly ovate and often 3-lobed leaves. Native 

 of China. Flowers double, pink or rose-color, appear- 

 ing just before the leaves unfold, very profuse and 

 showy. Very hardy and desirable. 



Rhamnus The Buckthorns 



Hardy vigorous shrubs with handsome foliage 

 and showy berries. The larger-growing species 

 are well adapted and often used tor hedges, both 

 informal and clipped. They thrive in moist, loamy 

 soils, and are not averse to partial shade. 



Rhamnus alnifolia. DWARF ALDER. A small shrub 

 with wide-spreading branches, attaining a height of 3 

 to 4 feet. Grows naturally from New Brunswick to 

 British Columbia, southward to New Jersey and Cali- 

 fornia. Leaves oval, of a pleasing deep green color, 2 

 to 3 inches long. Berries black. 



I. alpina. MOUNTAIN BUCKTHORN. A shrub with 

 stout ascending branches, usually growing 3 to 5 feet 

 tall. Native of the mountains of Europe. Leaves oval, 

 dark lustrous green, 3 to 5 inches long. Berries large, 

 jet-black. One of the handsomest species. 



R. catharticus. COMMON BUCKTHORN. A large shrub 

 with spiny branches, usually attaining a height of 6 to 

 10 feet. Native of Europe. Leaves oval, dark green 

 and lustrous, 2 to 3 inches long, fading in autumn with 

 yellow tones. Berries black, borne in great profusion. 

 A valuable hedge plant on account of its extreme hardi- 

 ness and vigorous constitution. 



R. frangula. ALDER BUCKTHORN. A large shrub with 

 numerous leafy branches. Native of Europe and Asia. 

 Leaves dark green on the upper surface, paler beneath, 

 fading with tones of yellow, orange and red. Berries 

 changing from red to black, ripening in September. 



Rhodora The Rhodora 



A hardy shrub with showy rose -colored or 

 purple flowers. It thrives well in moist, loamy 

 soils, and on account of its showy, abundant and 

 early bloom, is worthy of a prominent place in 

 the shrub borders. 



Rhodora canadensis. RHODORA. A low deciduous 

 shrub usually i to 2 feet tall. Grows naturally from 

 Canada to Pennsylvania and New Jersey. Leaves dark 

 green on the upper surface, pale and glaucous beneath. 

 Flowers in various shades of rose and purple, profusely 

 borne in clusters before the leaves appear. A very 

 pretty plant. 



Rhodotypos The White Kerria 



A hardy ornamental shrub with showy white 

 flowers and shining black berries. It thrives in any 

 well-drained fertile soil. 



Rhodotypos kerrioides. WHITE KERRIA. A handsome 

 and distinct shrub, usually 4 to 5 feet tall. Native of 

 Japan. Leaves ovate, with a long slender point, bright 

 green and lustrous. Flowers pure white, an inch or 

 more across, appearing in late spring. Berries retained 

 throughout the winter. 



Rhus The Shrubby Sumacs 



For convenience, the larger-growing species have 

 been included under "Deciduous Trees." Both 

 the shrubby forms and those that attain tree-like 



proportions under favorable conditions, are re- 

 markably attractive objects, on account of the 

 showy autumn tints and bright clusters of berries. 

 They thrive in almost any well-drained soil, and are 

 very hardy. 



Bhus aromatica (J?. canadensis). SWEET-SCENTED 

 SUMAC. A much-branched spreading shrub, usually 2 

 to 4 feet tall, widely distributed in North America. 

 Leaves compound, consisting of three bright green 

 leaflets. Flowers yellow, disposed in short spikes or 

 clusters along the branches. Fruit bright red, clothed 

 with short silky hairs. Splendid for rock-gardens. 



R. michauxi (R. pumila). DWARF SUMAC. A low 

 downy shrub, creeping by underground rootstocks, 

 distributed from North Carolina to Georgia. Stems i 

 to 2 feet tall, bearing numerous compound leaves with 

 9 to 15 dark green leaflets, which assume brilliant tones 

 in autumn. Flower-spikes 4 to 6 inches long, followed 

 by deep red showy berries. A rare plant. 



Ribes The Flowering Cur- 

 rants and Gooseberries 



Hardy ornamental shrubs thriving in almost any 

 well-drained soil. The Gooseberries have spiny 

 and often prickly branches, but those of the Cur- 

 rants are unarmed. They are attractive and inter- 

 esting objects and worthy of more universal at- 

 tention. 



Ribes aureum. MISSOURI, OR FLOWERING CURRANT. 

 A vigorous shrub with upright branches, attaining a 

 height of 5 to 8 feet. Grows naturally from Missouri to 

 the Rocky Mountains. Leaves bright lustrous greenj 

 usually 3-lobed, densely covered with yellowish resi- 

 nous dots when young. Flowers yellow, large and 

 showy, produced in leafy- bracted clusters in early 

 spring. Berries dark brown or black, edible. 



R. curvatum. SOUTHERN GOOSEBERRY. A diffusely 

 branched shrub, with spiny, recurved or drooping 

 branchlets. Grows naturally in Georgia and Alabama. 

 Leaves 3-lobed, bright lustrous green, an inch or less 

 in length. Flowers whitish, profusely borne on droop- 

 ing pedicels in spring. Splendid for rock-gardens. 



R. floridum. WILD BLACK CURRANT. A vigorous 

 shrub with upright branches, usually 3 to 5 feet tall. 

 Grows naturally from Nova Scotia and Minnesota, 

 southward to Virginia and Nebraska. Leaves sharply 

 3- to 5-lobed, resinous dotted, especially on the lower 

 surface. Flowers greenish white or yellow, in long 

 pendulous racemes. Fruit black, resembling in flavor 

 that of the Black Currant of the gardens. 



R. gordonianum. PINK-FLOWERED CURRANT. A large 

 shrub with several strong, upright branches, of garden 

 origin. Leaves bright green, 3- to 5-lobed, fading with 

 tones of yellow and orange. Flowers rose-colored, pro- 

 duced in long pendulous racemes, profuse and showy. 



R. sanguineum. RED-FLOWERED CURRANT. A large 

 shrub with upright branches and red-barked twigs, 

 distributed from British Columbia to Mexico. Leaves 

 broadly cordate, 3- to 5-lobed, dark green, with con- 

 spicuous veins. Flowers rose or ruddy purple, in long 

 pendulous racemes in early spring. Fruit bluish black 

 with gland-tipped hairs. Very ornamental. 



Robinia The Rose Acacia 



A hardy shrub with bristly branches, spreading 

 by underground rootstocks. The showy flowers 

 appear in late spring or early summer. Thrives in 

 almost any well-drained soil. 



Robinia hispida. ROSE ACACIA. A small shrub, usually 

 2 to 3 feet tall, more or less bristly -hairy. Grows 

 naturally from Virginia to Georgia, in the mountains. 

 Leaves compound, consisting of 9 to 13 bright green 

 leaflets. Flowers rose-color, very showy, in loose nod- 

 ding racemes. 



78 



