Eustigma oblongifolium

• Interesting Facts
• Description
• Taxonomy
• Similar Species
• More Info
• Further Reading
• Notes

Interesting Facts

Description

Family Hamamelidaceae

Shrubs or trees , evergreen or deciduous, hermaphroditic , andromonoecious, or monoecious. Indumentum usually of stellate hairs or stellate or peltate scales . Buds perulate or naked. Leaves distichous or spiral , rarely subopposite or opposite, stipules minute to large, usually paired (solitary and enclosing bud in Mytilaria, and apparently absent in Rhodoleia) ; petiole usually well defined; leaf blade simple or palmately lobed , pinnately veined or palmately 3 5-veined. Inflorescences usually spikes or heads , rarely racemes or (condensed) thyrses or panicles, axillary or terminal . Flowers small to medium-sized, bracteate and often bracteolate , bisexual or unisexual , actinomorphic or rarely zygomorphic (Rhodoleia), hypogynous to epigynous , floral cup shallow to urn-shaped, sometimes absent; sepals 4 or 5( 10), sometimes absent, imbricate, usually persistent ; petals absent or 4 or 5, yellow, white, greenish or red, often ribbonlike and circinate in bud, caducous ; stamens 4, 5, or many, free , rarely arranged in 2 whorls with the inner whorl staminodal, development of polyandrous androecia centripetal or centrifugal ; anthers basifixed , thecae mostly bisporangiate , each opening by two valves or a simple longitudinal slit, or monosporangiate and opening by a single valve (Exbucklandia, Hamamelis and the genera of the S hemisphere), connective protruding; disk scales sometimes present between stamens and carpels. Ovary 2-locular, carpels free at apex; ovules mostly 1 per carpel, less often many, but then most of them sterile , crassinucellar, bitegmic, anatropous , halfway between apotropous and epitropous , pendent from ovary top if solitary, along the carpellary margins if numerous ; placentation axile . Styles and stigmas 2. Fruit a capsule, dehiscing septicidally, septifragally, or loculicidally and 4-valved; endocarp woody or leathery, usually loose from leathery exocarp . Seeds 1 to many per carpel; if solitary then seed coat thick, hard, smooth and shiny, black or brown; if numerous then sometimes winged and only a few viable. Endosperm thin; embryo straight; cotyledons leaflike, radicle short.

About 30 genera and 140 species: E and S Africa (including Madagascar), E, W, and SE Asia, NE Australia, Central, North, and South America, Pacific Islands; 18 genera (four endemic) and 74 species (58 endemic) in China.

Several genera and species need critical revision .[1]

Genus Eustigma

Shrubs or small trees , evergreen ; branches usually stellately pubescent ; buds naked. Leaves petiolate ; stipules minute, caducous , leaving small scars ; leaf blade leathery, margin entire or dentate towards leaf apex, venation pinnate. Inflorescence racemose, terminal , mostly on short 2-leaved lateral branches, pedunculate ; basal inflorescence bracts 2. Flowers bisexual . Floral cup turbinate , stellately tomentose . Sepals 5. Petals 5, small, yellow, scalelike, geniculate , with two dorsal swellings. Stamens 5, opposite to sepals, filaments very short; anther thecae 2-sporangiate, each dehiscing by 2 valves ; staminodes absent. Ovary almost inferior; ovules 1 per locule; styles long; stigmas very large, spatulate , verrucose , dark purple. Capsules ovoid-globose, woody, dehiscing loculicidally by two 2-lobed valves; endocarp loose from woody exocarp . Seeds narrowly ovoid .

Three species: China, Vietnam; three species (two endemic) in China.[2]

Taxonomy

Notes

Publishing author : Gardner & Champ. Publication : Hooker's J. Bot. Kew Gard. Misc. 1: 312 1849

Similar Species

Members of the genus Eustigma

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More Info

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Further Reading

• Bulletin of miscellaneous information. Additional Series. Royal Gardens, Kew. 10 1920 [Kew, Surrey: Royal Botanic Gardens], 1898-1936; url p. 101.
• Flora hongkongensis: a description of the flowering plants and ferns of the island of Hongkong. London, L. Reeve, 1861. url .
• Flora of Kwangtung and Hongkong (China) being an account of the floweriing plants, ferns and fern allies together with keys for their determination preceded by a map and introduction, London, H. M. Stationery off., printed by Darling and son, ltd., 1912. url .
• Icones plantarum formosanarum nec non et contributiones ad floram formosanam: or, Icones of the plants of Formosa, and materials for a flora of the island, based on a study of the collections of the Botanical survey of the Government of Formosa / By B. Hayata. .. Taihoku: Bureau of Productive Industry, Government of Formosa, 1911-1921. url p. 113, p. 14.
• Seemann, B. The botany of the voyage of H.M.S. Herald: under the command of Captain Henry Kellett, R.N., C.B., during the years 1845-51 /by Berthold Seemann. 1852-1857 London: Lovell Reeve, 1852-1857. url p. 452.
• The Garden: an illustrated weekly journal of gardening in all its branches. London: [s.n., url p. 421.
• The Journal of the Linnean Society. Botany. 23 1886-88 London: the Society: Longman, Green, Longman, Roberts & Green: ||Williams and Norgate, 1865-1968. url p. 291, p. 588.
• The natural history of plants. Translated by Marcus M. Hartog. LondonL. Reeve1871- url p. 390.
• Chang Hung-ta. 1979. Hamamelidaceae. In: Chang Hung-ta, ed., Fl. Reipubl. Popularis Sin. 35(2): 36116.
• Chang Hung-ta. 1979. Hamamelidaceae. In: Chang Hung-ta, ed., Fl. Reipubl. Popularis Sin. 35(2): 36116.

Notes

Contributors

• Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 30, 2012.

Data Sources

Accessed through GBIF Data Portal March 04, 2008:

• Taiwan Biodiversity Information Facility: Magnoliophyta

Identifiers

• Biodiversity Heritage Library NamebankID: 5954586
• Global Biodiversity Information Facility Taxonkey: 14459533
• Globally Unique Identifier: urn:lsid:ipni.org:names:430647-1
• International Plant Names Index (IPNI) ID: 430647-1
• Zipcode Zoo Species Identifier: 1296496

Footnotes

1. Zhi-Yun Zhang, Hongda Zhang & Peter K. Endress "Hamamelidaceae". in Flora of China Vol. 9 Page 18. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
2. "Eustigma". in Flora of China Vol. 9 Page 34. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]

©2004-2012 David Stang. All rights reserved.