50 JOURNAL OF THE ARNOLD ARBORETUM [vol. hi 



flowers and in their color as stated above and it is probably difficult or 

 even impossible to distinguish them from certain forms of f. japonicwn, 

 the Kurume Azaleas, but as they are of different origin and have the 

 advantage of being perfectly hardy in the climate of Boston, it seemed 

 advisable to distinguish them by a definite name, commemorating their 

 place of origin. 



Cultivated at the Arnold Arboretum under No. 10932; specimens col- 

 lected May 20, 1916, June 8, 1917, May 20 and October 12, 1918, and 

 May 12, 1921 (No. 10932, a (type), b-d) are preserved in the herbarium 

 of the Arnold Arboretum. 



X Ligustrum ibolium Coe in Iitt. 1919 {L. obtusifolium x ovalifolium) . 



"Ibolium Privet" in Elm City Nursery Co. Price-list, 1921 41, fig. 



Upright shrub; young branchlets puberulous, the pubescence chiefly 

 in two opposite longitudinal rows, soon glabrous or nearly glabrous. 

 Leaves elliptic-ovate to oblong-ovate, acute to acuminate, broadly cune- 

 ate at base, sparingly and finely pubescent above chiefly toward the 

 midrib, glabrous or nearly so at maturity, pubescent on the midrib and 

 sparingly on the veins beneath and with a few scattered hairs on the 

 surface, glabrous at maturity except on the midrib; petioles glabrous 

 or nearly so, 2-3 mm. long. Flowers in terminal, loose, pyramidal pan- 

 icles 8-12 cm. long, usually leafy or with leafy bracts below, the lower 

 lateral branchlets elongated, 3-6 cm. long; axes puberulous or nearly 

 glabrous, the lateral ones sharply 4-angled; flowers nearly sessile; the 

 calyx glabrous with truncate margin; corolla-tube about 5 mm. long, 

 lobes short reflexed; anthers exserted, about as long as corolla-lobes; 

 filaments partly exserted. Fruit subglobose, 5-7 mm. long, black, bloomy. 

 Cultivated in the Elm City Nurseries and in the Arnold Arboretum; 

 specimens in herb. Arnold Arboretum: Elm City Nurseries, New Haven 

 Conn., July 9, 1920 (No. 22, type, Nos. 1, 13, 37, 38, 41), November 10, 

 1917, and Nov. 10, 1919; Arnold Arboretum, July 13, 1920 (No. 13) 

 and June 28, 1921. 



This hybrid originated in the Elm City Nurseries, New Haven, Con- 

 necticut, about 1910. It is intermediate between the supposed parents 

 Ligustrum obtusifolium Sieb. & Zucc. (Z. ibota Sieb., not Blume) 1 and 

 L. ovalifolium Hassk. From L. ovalifolium it is easily distinguished by 

 the puberulous young branchlets and inflorescence, by the pubescence 

 of the young leaves persistent on the under side of the midrib, while from 



ifolium 



gla- 



brous branchlets, the larger, acute, never obtuse or obtusish glabrescent 

 leaves, the glabrous calyx and the larger and looser inflorescence and in 



1 It is unfortunate that the now generally accepted name Ligustrum ibota Sieb. is 

 to be superseded by L. obtusifolium Sieb. & Zucc, as L. ibota Sieb. though an earlier 

 name, is a nomen nudum, having been published without any description or citation 

 of a synonym and therefore uncertain to which of the several Japanese species it should 

 be applied. The name L. ibota Siebold & Zuccarini of 1846 will then become the 

 valid name for L. ciliatum Blume of 1850, a rarely cultivated species of little ornamen- 

 tal merit. 



