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Numerous varieties are cultivated in Europe for their edible nuts. They are also valuable for planting shrubberies, and thrive in almost any soil. The foliage of some species turns bright yellow or red in autumn. Propagated by seeds sown in fall, or stratified and sown in spring; the varieties usually by suckers, or by layers, put down in fall or spring; they will be rooted the following fall. Budding in summer is sometimes practiced for growing standard trees, and grafting in spring in the greenhouse for scarce varieties. They may also be increased by cuttings of mature wood taken off in fall, kept during the winter in sand or moss m a cellar and planted in spring in a warm and sandy soil. Illustrated monograph of the cultivated varieties by Franz Goeschke, Die Haselnuss (1887). See, also, bulletin on Nut- culture by the U. S. Dept. of Agric. For the culture of the nuts, see articles Filberts and Hazels.
Numerous varieties are cultivated in Europe for their edible nuts. They are also valuable for planting shrubberies, and thrive in almost any soil. The foliage of some species turns bright yellow or red in autumn. Propagated by seeds sown in fall, or stratified and sown in spring; the varieties usually by suckers, or by layers, put down in fall or spring; they will be rooted the following fall. Budding in summer is sometimes practiced for growing standard trees, and grafting in spring in the greenhouse for scarce varieties. They may also be increased by cuttings of mature wood taken off in fall, kept during the winter in sand or moss m a cellar and planted in spring in a warm and sandy soil. Illustrated monograph of the cultivated varieties by Franz Goeschke, Die Haselnuss (1887). See, also, bulletin on Nut- culture by the U. S. Dept. of Agric. For the culture of the nuts, see articles Filberts and Hazels.
C. colchica, Alboff. Low shrub, to 3 ft.: lvs. ovate or obovate, densely doubly serrate, sparingly pilose: involucre connate, with a short lacerated beak, pubescent. Caucasus. Winkl. 53. Not in cult.—C. colurnoides, Schneid. (C. intermedia, Lodd., not Fingerh., C. Colurna X C. Avellana). Similar to C. Colurna: small tree or large shrub, bark darker: involucre shorter, scarcely glandular. Garden origin.—C. Fargesii, Schneid. (C. mandahurica var. Fargesii, Burkill). Tree to 45 ft.: lvs. narrow-obovate to oblong: involucre soft-pubescent, sometimes only slightly so. W. China.— C. Jacquemontii, Decne. (C. Colurna var. lacera, DC.). Allied to C. chinensis. Tree: lvs. ovate, lobed toward the apex, less pubescent, 5-8 in. long: involucre pubescent, not constricted, lobes not or rarely forked, often dentate. Himalayas. Alfred Rehder.
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