266 THE SMALL FRUITS OF NEW YORK 



pubescence underneath. This hybrid has almost entirely sterile poUen 

 and is of little value as a fruit plant. 



The hybrid of the rock currant, R. petraeum, with the red currant, 

 R. sativum, is named R. gonduini, Janczewski Bui. Ac. Set. Nat. Crac. 

 298. 1 90 1. It has large rather short 3- to 5-lobed leaves. The racemes 

 are similar to those of R. sativum, spreading; the flowers equally intermediate, 

 with refiexed ciliate sepals and a faint ring inside; the anthers are oblong 

 like those of R. petraeum. It originated in the nursery of M. Gondouin at 

 St. Cloud, and is known as " Gondouin " or " Grosseillier Gondouin rouge " 

 or " sehr friihe Hochrote." It resembles the R. pallidum (Prince Albert), 

 but the leaves are thicker and darker, and the flowers have a faint ring 

 inside. It retains its leaves late in the fall. 



Subgenus II. Eucoreosma. Janczewski Bm/. .Ac. S«. Nat. Crac. 2:7. 1906; Janc- 

 zewski Monogr. 245. 1907. 



Black Currants. — Deciduous shrubs except for R. mburnifolium; young shoots glabrous 

 or downy with sessile yellow resinous dots or glands on all the young parts, on the scales of 

 the winter buds, and chiefly on the back of the leaves; the whole plant of a distinct, often 

 disagreeable odor. Leaves 3- to 5- to 7-lobed, lobes generally pointed, and shortly or 

 incisedly serrate, resinous dotted sometimes also on the upper surface. Racemes varying 

 in the different species in length, drooping or erect. Receptacle varying from cup-shaped to 

 campanulate-tubular, often resinous dotted, sepals spreading or recurved. Stamens inserted 

 at about the same level as the petals, anthers roundish. Ovary glabrous, in most cases 

 with resinous dots or glands, generally inferior, but in some species distinctly semi-inferior 

 and its upper part extending into the bottom of the receptacle. Style mostly shortly bifid. 

 Fruits black or brownish, sometimes edible, but mostly of a special, often disagreeable 

 flavor. 



This subgenus comprises 12 species, all natives of the Northern Hemis- 

 phere, extending south to northern Mexico. 



Only two species are important as fruit plants. 

 A. Racemes 5- to is-fiowered 



B. Flowers tomentose, campanulate-urceolate R. nigrum 



BB. Flowers pubescent or glabrous, tubular-campanulate R. americanum 



AA. Racemes 3- to 5-flowered, broadly campanulate R. culverwellii 



Ribes nigrum. Linnaeus Sp. PI. 201. 1753; Loudon Arb. 2:983, fig. 734. 1844; 

 Card Bush-Fr. 473. 1898; Schneider///. Hdb. Laubh. 1:422. igos; Ibid. 2:953. 1912; 

 Janczewski Monogr. 347. 1907; Coville & Britton A^. Am. Fl. 22:197. 1908; Rehder 

 in Bailey Stand. Cj'c. Hort. 5:2959. 1916; Bean Trees & Shrubs 2:405. 1921; Berger 

 N. Y. Sta. Tech. Bui. 109:30. 1925. 



Black Currant. — Vigorous upright shrub, 1-2 m high, young shoots pale, subglabrous 

 or pubescent, with scattered sessile yellow glands. The whole plant has a peculiar aromatic 



