Difference between revisions of "Lythraceae"
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| + | Lythraceae (from the genus Lythrum, derived from the Greek meaning blood, in reference to the purple flowers). Loosestrife Family. Fig. 42. Herbs, shrubs, or trees: leaves usually opposite or whorled: flowers bisexual, usually regular, perigynous; receptacle (“calyx-tube”) tubular, ribbed, free from the ovary, bearing the 4 or 8 valvate sepals on its margin; petals of the same number as the sepals, or 0, and inserted with them, imbricated; stamens usually twice as many as the petals, rarely more (up to 200), or fewer (to 1); outer set alternate with the petals, and inserted some distance below them; ovary superior, 2-6-celled, many-ovuled: fruit a capsule, rarely indehiscent. | ||
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| + | There are 22 genera and about 450 species known; generally distributed, but more abundant in the tropics, especially in America. The largest genus is Cuphea with about 160 species. The family is closely related to the Onagraceae, but differs in the superior ovary; it is also related to the Melastomaceae, but the stamens are normal. | ||
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| + | Lythrum Salicaria has been used as an astringent: Heimia and Cuphea have been used as purgatives and emetics. Lawsonia inermis of Egypt is the famous henna, the perfume of the flower of which is renowned throughout the East; with an orange-red dye obtained from the leaves of this plant, women of the orient dye hair and nails. Pemphis acidula is used as a pot-herb in Asia. The flowers of Woodfordia floribunda yield the red dye of India called dhak. Lagerstroemia furnishes very valuable timber. | ||
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| + | In cultivation in N. America are several genera: Cuphea, species of garden annuals; Decodon (Swamp Loosestrife), native, but used for water-gardens; Lythrum (Loosestrife); Lawsonia (Henna), cultivated in southern Florida and southern California; Lagerstroemia indica (Crape Myrtle) cultivated in the South. | ||
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Revision as of 03:29, 13 May 2009
Read about Lythraceae in the Standard Cyclopedia of Horticulture
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Lythraceae (from the genus Lythrum, derived from the Greek meaning blood, in reference to the purple flowers). Loosestrife Family. Fig. 42. Herbs, shrubs, or trees: leaves usually opposite or whorled: flowers bisexual, usually regular, perigynous; receptacle (“calyx-tube”) tubular, ribbed, free from the ovary, bearing the 4 or 8 valvate sepals on its margin; petals of the same number as the sepals, or 0, and inserted with them, imbricated; stamens usually twice as many as the petals, rarely more (up to 200), or fewer (to 1); outer set alternate with the petals, and inserted some distance below them; ovary superior, 2-6-celled, many-ovuled: fruit a capsule, rarely indehiscent. There are 22 genera and about 450 species known; generally distributed, but more abundant in the tropics, especially in America. The largest genus is Cuphea with about 160 species. The family is closely related to the Onagraceae, but differs in the superior ovary; it is also related to the Melastomaceae, but the stamens are normal. Lythrum Salicaria has been used as an astringent: Heimia and Cuphea have been used as purgatives and emetics. Lawsonia inermis of Egypt is the famous henna, the perfume of the flower of which is renowned throughout the East; with an orange-red dye obtained from the leaves of this plant, women of the orient dye hair and nails. Pemphis acidula is used as a pot-herb in Asia. The flowers of Woodfordia floribunda yield the red dye of India called dhak. Lagerstroemia furnishes very valuable timber. In cultivation in N. America are several genera: Cuphea, species of garden annuals; Decodon (Swamp Loosestrife), native, but used for water-gardens; Lythrum (Loosestrife); Lawsonia (Henna), cultivated in southern Florida and southern California; Lagerstroemia indica (Crape Myrtle) cultivated in the South.
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 Lythrum salicaria | ||||||||||
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| 32 (28); see text. |
Lythraceae is a family of flowering plants. It includes 500-600 species of mostly herbs, with some shrubs and trees, in 32 genera. Lythraceae have a worldwide distribution, with most species in the tropics but ranging into temperate climate regions as well.
The family is named after the type genus, Lythrum, the loosestrifes (e.g. Lythrum salicaria Purple loosestrife). It now also includes the pomegranate, formerly classed in a separate family Punicaceae.
Genera
- Subfamily Lythroideae Juss. ex Arn. 1832 = 'Lythraceae sensu stricto', 28 genera:
- Subfamily Punicoideae (Horan. 1834) S. A. Graham, Thorne & Reveal 1998 = 'Punicaceae'
- Subfamily Sonneratioideae (Engl. & Gilg 1924) S. A. Graham, Thorne & Reveal 1998
- Subfamily Duabangoideae (Takht. 1986) S. A. Graham, Thorne & Reveal 1998 = 'Duabangaceae'
- Subfamily Trapoideae Voigt 1845 = 'Trapaceae'
References
- Graham, S. A., Thorne & Reveal (May 1998). "Validation of subfamily names in Lythraceae". Taxon 47 (2): 435-436. http://links.jstor.org/sici?sici=0040-0262%28199805%2947%3A2%3C435%3AVOSNIL%3E2.0.CO%3B2-E.
- Little S. A., Stockey R. A., and Keating, R. C. (2004). "Duabanga-like leaves from the Middle Eocene Princeton chert and comparative leaf histology of Lythraceae sensu lato". American Journal of Botany 91: 1126-1139. http://www.amjbot.org/cgi/content/abstract/91/7/1126.
- Lythraceae in L.Watson and M.J.Dallwitz (1992 onwards). The families of flowering plants: descriptions, illustrations, identification, information retrieval.
