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Difino
| • | Liriodendron chinense (Hemsl.) Sarg.Liriodendron tulipifera L.
Liriodendron is a genus in the magnolia family (Magnoliaceae) consisting of two species of large deciduous trees, one native to eastern North America, the other to China. The standard English name is variously given as two words (tulip tree, the most common form in popular usage), hyphenated (tulip-tree), or compound (tuliptree, the most common form in botanical usage).
]]These trees are easily recognized by their leaves, which are very unusual, having four lobes in most cases and a cross-cut notched or straight apex; size varies from 8-17 cm (3-7 inches) long and 6-12 cm (2.5-5 inches) broad in both species; the petiole is 4-10 cm (1.6-4 inches) long. Leaves on young trees tend to be more deeply lobed and larger size than those on mature trees (see photos, left). In autumn the leaves turn yellow, or yellow and brown.
The flowers are 4-8 cm (1½-3 inches) in diameter and have nine tepals, three short outer sepal-like, and six inner petal-like, all yellow-green in colour. They are superficially similar to a tulip in shape, hence the tree's name. The stamens and pistils are arranged spirally around the spike; the stamens fall off, and the pistils become the samaras. The fruit is a cone-like aggregate of samaras, each of which has a roughly tetrahedral seed with one edge attached to the central conical spike and the other edge attached to the wing.
, United Kingdom]]The best known is the American Tulip Tree, L. tulipifera, native to eastern North America from southern Ontario and Vermont south to central Florida and Louisiana. It can grow to more than 50 m (165 feet) in virgin cove forests of the Appalachian Mountains, often with no limbs until it reaches 25-30 m (80-100 feet) in height, making it a very valuable timber tree. It is fast-growing, without the common problems of weak wood strength and short lifespan often seen in fast-growing species. The flowers have an orange band on the tepals; they yield large quantities of nectar and the species is a major honey plant in the eastern
Source: [wikipedia: liriodendron]
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magnoliaceae:magnoliopsida
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