366 THE CULTIVATED EVERGREENS 



higher mountains of southern Asia and the islands of the Malayan Archipelago 

 extending to Australia. 



R. minus, Michx. {R. punctatum, Andr. R. Cuthbertii, Small). Straggling 

 shrub to 10 feet tall: leaves elliptic to elliptic-lanceolate, acute at the ends, 

 sometimes acuminate at the apex, 13^-4 inches long, glabrous above, glan- 

 dular-lepidote beneath: flowers in 6-8-flowered clusters; calyx short; corolla 

 fuimelform-campanulate, about 1 inch across, rosy-pink, the upper lobe 

 spotted greenish, lepidote outside; tube nearly cylindric, longer than the 

 ovate crisped lobes. Flowers in June and July with or usually after the young 

 leaves. North Carolina to Georgia and Alabama. — Introduced to England 

 in 1786 by John Fraser. 



R. carolinianum, Rehd. (R. punctatum, Small, not Andr.). Shrub to 

 6 feet tall, but usually lower and rather compact: leaves elliptic to narrow- 

 elliptic, 2-3 inches long, acutish and mucronate or abruptly short-acuminate 

 at apex, broadly cvmeate at base, glabrous above, ferrugineous-lepidote 

 beneath, often very densely so: flowers in dense 5-10-flowered clusters; 

 corolla broadly funnelform-campanulate, about 1}/^ inches across, pale rosy- 

 purple, not or only slightly spotted; tube gradually widened, as long or 

 shorter than the ovate lobes, slightly lepidote outside. Flowers in May 

 or June before or rarely with the young leaves. North Carolina in the moun- 

 tains. — Introduced before 1814 to England, but for a long time confused with 

 the preceding species. It has proved perfectly hardy at the Arnold Arboretum. 



Var. album, Rehd. (var. MargarettoB, Ashe), is a form with white or nearly 

 white flowers, occurring wild in North Carolina. — Introduced about 1900. 



R. Smimovii, Trautv. Shrub or small tree to 20 feet tall, of rather loose 

 habit; young branchlets, like the petioles, densely covered with whitish or 

 light brown woolly tomentum: leaves elliptic-oblong, 3-5 inches long, acutish, 

 cuneate at base, revolute at the margin, dark green and glabrous above, 

 with yellow midrib, densely covered beneath with white or pale brown 

 woolly tomentum: flowers numerous, on slightly pubescent pedicels in a 

 compact head; calyx small, tomentose; corolla campanula te-funnelf or m, 

 rosy-purple, 3 inches across; lobes oval, longer than the tube, with crisped 

 darker margin, the upper lobe spotted brownish; ovary tomentose. Flowers 

 in May and June. Caucasus. — Introduced in 1866 by Dr. E. Regel through 

 the Botanic Garden at Petrograd. At the Arnold Arboretum it has proved 

 perfectly hardy; it seems to prefer a well-shaded situation. 



The closely related R. Ungernii, Trautv., with white to pale rose flowers, 

 was introduced at the same time but has remained rare in cultivation. 



R. Mettemichii, Sieb. & Zucc. {R. Hymenanthes, Makino. R. japonicum, 

 Schneid., not Suring.). Shrub to 12 feet tall, but usuaUy lower: leaves oblong 

 to oblong-lanceolate or oblanceolate, 2-5 inches long, obtuse and mucronate 

 or acutish at the apex, narrowed at base, rarely rounded, dark lustrous 



