150 THE AZALEAS OF NORTH AMERICA 



by Mr. Ashe, show well the purplish pink color of the flowers; the corolla tube is 

 slightly shorter and wider than in the typical R. atlanticum and is furnished outside 

 with numerous gland-tipped stiff hairs, which are more numerous in one of the 

 specimens sent and less numerous in the other, but in the latter the tube is 

 also thinly covered with a fine villose pubescence, which in typical R. atlanticum is 

 absent or nearly absent, though occasionally, as in Harbison's No. 14 from George- 

 town, South Carolina, the type locality of the species, and in his Nos. 38 and 41 

 from Wilmington, North Carolina, this villose pubescence is present. To f. ne- 

 glectum I also refer Harbison's No. 14 from Newbern, North Carolina, collected 

 April 17, 1918, though this differs in its narrow-oblong calyx-lobes, up to 5 mm. 

 long, and possibly also his Nos. 7, 101, 102 from the same locality, Nos. 37, 40 and 

 47 from Wilmington, and his Nos. 3 and 5 from Selma, North Carolina, may belong 

 to this form, if we consider the color its chief distinguishing character. 



Rhododendron atlanticum var. luteo-album Rehder, comb. nov. 



Azalea atlantica var. luteo-alba Coker in Jour. Elisha Mitchell Sci. Sac. XXXVI. 

 98, pi. 1, fig. (at right) (1920). 



This variety differs from the type in the dull bluish green leaves finely pubescent 

 on both surfaces and strigillose above, in the finely villose petioles and in the stipi- 

 tate glandular young branchlets; the flowers white, when open, are sometimes 

 yellowish in bud without any trace of pink. 



South Carolina. Darlington County : Ditch banksoutheast of 



Hartsville plantation of J. L. Coker & Co., spring of 1918, J. L. Coker, 



Jr. (co-type) ; flat woods south of Hartsville plantation, April 29, 1915, 



W. C. Coker; without precise locality, in sandy soil (No. 8), in sandy 



soil near roadside (No. 14), in cultivated field (No. 13), April 24, 1918, 



T. G. Harbison; in low sandy pine woods, November 22, 1919, T. G. 



Harbison (Nos. 31, 32) ; Society Hill, no date, M. A. Curtis (Gray Herb., 



partly typical R. atlanticum). 



This variety was based originally on the color of the flowers, but as a specimen 

 kindly sent me by the author of the variety shows, it is at the same time rather 

 densely pubescent and differs in this respect from the type of the species. As the 

 pubescence seems to me the more important character, I prefer to include in this 

 variety all the specimens with pubescent leaves without regard to the difference in 

 the color of the flowers, which, moreover, seems to be not very pronounced, for I 

 can hardly see any difference between the two forms as represented on the colored 

 plate cited above. 



Rhododendron oblongifolium Millais, Rhodod. 219 (1917). — Millais 



& Williams in Rhodod. Soc. Notes, I. 125 (1918). 



Azalea oblongifolia Small, Fl. S.E.U. S. 883, 1336 (1903) ; in iV. Am. Fl. XXTX. 

 43 (1914). 



Shrub to 2 m. high or less, with irregularly whorled branches; young branchlets 

 with short and rather sparse villose pubescence and usually with sparse strigose 

 hairs or sometimes nearly glabrous; floral winter-buds with ovate, acuminulate or 

 obtuse, grayish pubescent scales. Leaves obovate or elliptic-obovate to oblong- 

 oblanceolate, rarely oblong, 4 to 10 cm. long and 1.5 to 3.8 cm. broad, acutish 

 or acute, gland-tipped, cuneate, ciliate, dull green and glabrous above except the vil- 



