This section is from the book "Commercial Gardening Vol4", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
A large and somewhat mixed genus of shrubby and climbing, evergreen and deciduous plants from Europe, Asia, and North America. The shrubby or Tree Honeysuckles include such species as fragrantissima, from China, with white or creamy-yellow, sweet-scented flowers in January and February; hispida (bracteata) from the Himalayas, 2-3 ft., with hairy stems, and drooping white flowers in early summer; involucrata (Ledebouri), blooms in summer, the yellow tubular corollas being tinted with purple red, and having a pair of purple bracts; Standishi, with fragrant white flowers tinted with purple in winter and spring, resembles fragrantissima, but has larger leaves; tatarica, grows 4-8 ft. high, and has small heart-shaped leaves and rosy flowers, but there are forms with white, yellow, and purple-red flowers. Other shrubby species are tomentella, white, and Xylosteum, yellow, with several varieties.
Amongst the trailing or twining Honeysuckles the common British one, Periclymenum, is one of the best. It produces its downy yellow flowers, tinted outside with red, from June to September. The Dutch Honeysuckle, known as belgica, is a stronger-growing plant; quercifolia has lobed Oak-like leaves; and serotina has deep-red flowers late in autumn. L. brachypoda has evergreen oval-oblong leaves, and fragrant pale-yellow flowers. It is mixed up with flexuosa, which has long lance-shaped leaves and pink and yellow flowers; and also with japonica (or chinensis), a somewhat tender climber with red flowers. The variety aureo-reticulata is an elegant climber with oval-elliptic leaves, beautifully veined with golden yellow. L. Halleana of nurseries is closely related to japonica and has white flowers changing to yellow. L. sempervirens, the Trumpet Honeysuckle from North America, is almost evergreen, and has brilliant scarlet flowers with a yellow interior. It is somewhat tender. Other species met with are Caprifolium, yellow and purple; flava, yellow, rather tender. Loniceras are propagated by cuttings, layers, or seeds.