64 THE AZALEAS OF THE OLD WORLD 



Kurume in Kyushu it is known as the Kumagai-yodogawa. It is a vigorous free- 

 flowering plant of compact habit of growth, and its large, magenta-red flowers are 

 very handsome. Nothing definite appears to be known in Japan of the origin of 

 this Azalea but it has been cultivated for a long period. Maximowicz 's speci- 

 men undoubtedly belongs here, but those of Langsdorff, Wright and some of 

 Oldham's included by Maximowicz under his var. purpureum belong to R. sca- 

 brum G. Don. Recent botanists seem to have overlooked Lindley's name and 

 excellent figure. According to Planchon this variety was introduced from China 

 by Robert Fortune to the gardens of the Horticultural Society at Chiswick where 

 it flowered for the first time in 1851. 



A very hardy form with carmine-red flowers much cultivated in 

 Europe and, to a less degree, in this country may be distinguished 

 as: 



Rhododendron phoeniceum var. calycinum f. Maxwellii Wilson, 

 n. comb. 



Azalea Maxwelli Hort. Wezelenburg, Cat. 6, fig. (1915). 

 Rhododendron Maxwelli Millais, Rhodod. 208, fig. (1917). 



Japan : Kyushu, prov. Chikugo, Kurume, cultivated, May 3, 1918, 

 E. H. Wilson. 



Cultivated: Hort. Bobbink & Atkins, Rutherford, N. J., April, 1920. 

 At Kurume this bright-colored form is known as the " Aka-yodogawa." 



To this variable species must be added : 

 Rhododendron phoeniceum var. tebotan Wilson, n. comb. 



Rhododendron Tebotan (Rh. Kaempferi X Rh. rosmarinifoliwri) Komatsu in 

 Tokyo Bot. Mag. XXXII. [46] (1918). 



This variety has double flowers with small green leaves showing the centre, 

 and is remarkable for its color which is the same as that of Bougainvillaea glabra 

 Choisy, and quite unique among Azaleas. It is an old plant in Japanese gardens 

 but is now rare and Japanese nurserymen substitute for it Azalea " Fuji-manyo " 

 (R. mucronatum f. plenum Wils.). In 1919 I secured in Japan a living plant of 

 the true var. tebotan for the Holm Lea collection where it has flowered. 



Rhododendron yedoense Maximowicz apud Regel in Gartenfl. 

 XXXV. 565, t. 1233 a-b (1886). Millais, Rhodod. 264 (1917). 



Azalea Yodogava Grignan in Rev. Hort. 1908, 425 t. fig. 2. 



Rhododendron phoeniceum Matsumura, Ind. PL Jap. II. pt. 2, 463 (1912), 



not G. Don. 

 Rhododendron Yodogawa Kunert in Gartenwelt XVI. 163, t. (1912). Millais, 



Rhodod. 264 (1917). 

 Rhododendron poukhanense var. yodogawa Render in Mitt. Deutsch. Dendr. 



Ges. XXIV. 225 (1916); in Bailey, Stand. Cycl. Hort. V. 2943 (1916). 

 Rhododendron Poukhanense var. plenum Nakai in Tokyo Bot. Mag. XXXI. 



245 (1917). Komatsu in Tokyo Bot. Mag. XXXII. [12] (1918). 

 Azalea Tado Guno Hort. apud Millais, Rhodod. 264 (1917), as a synonym. 

 Rhododendron Matsumurai Komatsu in Tokyo Bot. Mag. XXXII. [13] (1918). 



