ENUMERATION OF THE SPECIES 121 



Deane, Fl. Metrop. Park, Mass. 53 (1896); in Rhodora, I. 94 (1899). 

 Millais, Rhodod. 235, pi. (1917). 



Azalea canadensis O. Kuntze, Rev. Gen. II. 386 (1891). Rehder in Bailey, 

 Cycl. Am. Hort. I. 122 (1900) .* 



A much-branched shrub 1 m. tall or lees, with slender upright or ascending 

 branches; young branchlets puberulous when young, bright yellowish red or 

 pinkish and often slightly bloomy at the end of the first season, becoming light 

 yellowish gray or gray the second year, later grayish brown; floral winter-buds 

 with about 10 ovate, acuminate to acute pinkish, finely pubescent and ciliolate 

 scales. Leaves elliptic to oblong, obtuse or acutish, cuneate at base, 2 to 4.5 rarely 

 to 6 cm. long and 0.8 to 1.8 cm. broad, ciliate and revolute at the margin, dull 

 bluish green above, usually somewhat strigillose and finely villose on the midrib, 

 thinly grayish tomentulose beneath and usually with scattered fulvous hairs and 

 scattered glands, and sparingly strigose on the midrib, the secondary veins diverg- 

 ing at nearly right angles; petioles slender, 2 to 5 mm. long, puberulous and spar- 

 ingly strigose. Flowers appearing before the leaves, in April or May or in the 

 North in June, in 3- to 7-flowered umbel-like racemes; pedicels 3 to 7 mm. long, 

 puberulous, glaucous and usually sparingly glandular-pilose; calyx-lobes very 

 short, unequal, puberulous and setosely ciliate; corolla rose-purple, two-lipped, 

 1.5 to 2 cm. long, glabrous, the lower lip divided nearly or quite to the base into 

 two nearly distinct narrow-oblong lobes, the upper lip with three short ovate lobes 

 at apex; stamens 10, about as long as the corolla, unequal; anthers broadly ellip- 

 soidal, 0.15 mm. long, purple; the filaments pubescent at the lower third; style 

 slightly longer than the stamens, 1.5 to 1.8 mm. long, glabrous or minutely pilose 

 near the base; ovary pubescent and slightly glandular, sparingly setose. Capsule 

 ovoid-oblong, curved near the base, 1 to 1.5 cm. long, slightly grooved, setose and 

 finely puberulous, light red-brown with a pinkish bloom. 



This is the most northern species of the group in North America and its range 

 extends from Labrador and Newfoundland to southwestern Quebec and south 

 through New England and central New York to northeastern Pennsylvania and 

 northern New Jersey. It grows along river banks, in moist woods and in swamps. 

 In spring it is a beautiful feature of the northern woods and swamps and its charm 

 has inspired Emerson to a well known poem in which he calls Rhodora a rival of 

 the Rose. 



Rhododendron canadense differs from all other species of the genus by the deeply 

 divided corolla, but in all other characters it is so closely related to the species here 

 associated with it, that its generic separation would appear artificial, and its close 



1 PRELINN. STNON. : Chamaerhododendros Duhamel, Semis Plant. Arb. Add. 10, 

 tab., fig. 2 (1760); Abh. Bdume Stand. Str&uch, ed. Oelhafen, I. 119, t. (1762). 



ADDITIONAL ILLUSTRATIONS. COLORED PLATES: Meerburgh, PL Select. Icon. 

 t. 23 (1798). Bot. Mag. XIV. t. 474 (1800). Nouv. Duhamel III. t. 53 (1806). 

 Guimpel, Otto & Hayne, Abb. Fremd. Holzgew. t. 14 (1825). Emerson, Trees & 

 Shrubs Mass. ed. 2, II. t. opp. p. 441 (1875). BLACK FIGURES: L'He*ritier, Stirp. 

 Nov. t. 68 (1796). Lamarck, Encycl. Meth. Rec. PL II. t. 364 (1823). Newhall, 

 Shntb* N.E.Am.&g. 85 (1893). Mdller's Deutsch. Gdrtn.-Zeit. XVII. 286, fig. 

 (1902). Keeler, Our North. Shrubs, 359 (1903). Garden Mag. V. 221 (1907). 

 Country Life Am. XL 496 (1907). Millais, Rhodod. pi. opp. 234 (1917). HABIT 

 FIGURES: Mdller's Deutsch. Gdrtn.-Zeit. XVII. 287, fig. (1902); XXI. 73, fig. 

 (1906). Silva-Tarouca, Uns. Freil.-Laubgeh. fig. 65 (p. 81) (1913). GartenweU, 

 IX. 474 (1905); XIV. 85 (1910); XX. 378 (1916). Gartenschonheit, I. 33 (1920). 

 The figures 31, 32 in Jardin, XX. 57 (1905) named Rhodora canadensis represent 

 Rhododendron dahuricum L. 



