38 JOURNAL OF THE ARNOLD ARBORTEUM (vol. iv. 



Young shoots clothed with gray to gray-brown floccose tomentum, 

 early becoming glabrous. Leaves when young covered with short, curled 

 hairs and on the underside with a short dun-colored felt, later becoming 

 glabrescent, sub-acute, base abruptly narrowed. Flowers pale- to dee]) 

 rose-pink, pedicels floccosely pubescent with occasional short stipitatc 

 glands; calyx saucer-shape with 5, short, rounded often glandular-ciliolatc 

 teeth; corolla wide funnel-form, 5-lobed, lobes spreading, rounded, some- 

 times emarginate; filaments pilose in lower half; ovary glabrescent. 



This hybrid is fairly intermediate between the species cited as its parents 

 though the glabrescent ovary, the usually glandular calyx and occasional 

 stipitatc glands on the pedicels denote the presence of other and foreign 

 influence. The habit of the plant and the character of the young shoots 

 and leaves strongly suggest R. Metternichii S. & Z. while the broader leaf- 

 base and glabrescent adult foliage recalls R. catawbiense Michx. The 

 flower truss is compact and rounded and the flowers, though not large, 

 are numerous and of pleasing shades of pink. As the type (No. 5905, 

 Arnold Arboretum) I have selected the form with deep rose-pink flowers 

 but the others are equally lovely. 



This hybrid was raised by Anthony Waterer at Knap Hill, Surrey, and 

 has been growing in the x\rnold Arboretum since 1909. It has proved 

 perfectly hardy and is of vigorous habit and promises to be a most useful 

 Rhododendron for the gardens of New England. The presence of a felt 

 of hairs on the underside of the leaf is a decided advantage to any Rhodo- 

 dendron in New England since it is a protection against the Rhododendron 

 fly which is a troublesome pest in many parts of eastern North America. 



Rhododendron brachycarpum D. Don apud G. Don, Gen. Syst. in. 



843 (1834).— De Candolle, Prodr. VII. 723 (1839).— A. Gray in Mem. 

 Am. Acad. n. s. vi. 400 (Bot. Jap.) (1858-59). — Maximowicz in M<5m. 

 Acad. Sci. St. Petersb. ser. 7, xvi. no. 9, 22 (Rhod. As. Or.) (1870).— 

 Franchet & Savatier, Enum. PL Jap. I. 288 (1875). -Sargent in Gard. & 

 Forest,i.292,fig.46 (1888).— Hookerf.in Bot. Mag. cxxix.t. 7881(1903). 

 Komarov in Act. Hort. Petrop. xxv. 207 (Fl. Mandsh, in.) (1907). 

 Schneider, 111. Ilandb. Laubholzk. n. 493, fig. 326-a (1909).— Nakai in 

 Jour. Coll. Sci. Tokyo, xxxi. 74 (FL Kor. n.) (1911); Fl. Sylv. Kor. pt. 

 VIII. 41, t. 14 (1919).— Matsumura, Ind. PI. Jap. II. pt. 2, 458 (1912). 

 Bean, Trees & Shrubs Brit. Isl. II. 345 (1914).— Rehder in Bailey, Stand. 

 Cycl. Hort. v. 2940, fig. 3384 (1916).— Millais, Rhodod. 129 (1917). 



Bush 0.5-4 m. tall, much-branched, young shoots clothed with gray 

 tomentum. Leaves petioled, elliptic to oblanceolate-oblong, 5-20 cm. 

 long, 2-9 cm. wide, rounded, short-apiculate at apex, base cuneate, truncate 

 or sub-auriculate, dark green, reticulate above, and clothed with a felt 

 of gray to dun-colored, stellate tomentum below, petiole stout, 1-3 cm. 

 long, clad with gray tomentum. Flowers white or yellowish striped and 

 flushed pink with greenish, green or brown honey-guides, about 5 cm. 



