Origin: in Urbana, Ill., by Arthur S. Colby, Illinois Agr. Expt. Sta. Introd. in 1961. Derived from Chaenomeles lagenaria and C. japonica; from seed collected at Arnold Arboretum.; planted in 1923; selected about 1930; tested as Ill. 9; selected for introduction by H.R. Kemmerer and J.C. McDaniel of the above Station. Tree: bush grows to about 5 feet; upright, spreading; production heavy when cross-pollinated; flowers very showy, bright red (geranium lake shade), to 2 inches in diam., appearing in midseason; foliage disease resistant; for ornamental purposes, also. Named in honor of Arthur S. Colby, Professor of Horticulture, Emeritus, Univ. of Illinois, Urbana. Fruit: large, being larger than the average of C. lagenaria; obovate; skin smooth, greenish-yellow; ripens late; useful for jelly.
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