Overview
Photos
Taxonomy
The Tribe Hamamelideae is a member of the Subfamily Hamamelidoideae. Here is the complete "parentage" of Hamamelideae:
- Domain: Eukaryota
Whittaker & Margulis,1978 - eukaryotes
- Kingdom: Plantae
Haeckel, 1866
- Subkingdom: Viridaeplantae
Cavalier-Smith, 1981 - Green Plants
- Phylum: Tracheophyta
Sinnott, 1935 Ex Cavalier-Smith, 1998 - Vascular Plants
- Subphylum: Euphyllophytina
- Infraphylum: Radiatopses
Kenrick & Crane, 1997
- Class: Magnoliopsida
Brongniart, 1843 - Dicotyledons
- Subclass: Hamamelididae
Takhtajan, 1967
- Superorder: Hamamelidanae
Takhtajan, 1967
- Order: Hamamelidales
Grisebach, 1854
- Family: Hamamelidaceae
(dis-AN-thus)
R. Brown, 1818
- Subfamily: Hamamelidoideae
- Tribe: Hamamelideae
- Subfamily: Hamamelidoideae
- Family: Hamamelidaceae
(dis-AN-thus)
R. Brown, 1818
- Order: Hamamelidales
Grisebach, 1854
- Superorder: Hamamelidanae
Takhtajan, 1967
- Subclass: Hamamelididae
Takhtajan, 1967
- Class: Magnoliopsida
Brongniart, 1843 - Dicotyledons
- Infraphylum: Radiatopses
Kenrick & Crane, 1997
- Subphylum: Euphyllophytina
- Phylum: Tracheophyta
Sinnott, 1935 Ex Cavalier-Smith, 1998 - Vascular Plants
- Subkingdom: Viridaeplantae
Cavalier-Smith, 1981 - Green Plants
- Kingdom: Plantae
Haeckel, 1866
The Tribe Hamamelideae is further organized into finer groupings including:
- Genus (6): Dicoryphe · Hamamelis · Hamelia · Handelia · Loropetalum · Trichocladus
- Species: ZipcodeZoo has pages for 169 species, subspecies, varieties, forms, and cultivars in the Tribe Hamamelideae.
Genera
Dicoryphe
Hamamelis
Shrubs or small trees, suckering or bearing stolons, not aromatic and resinous; twigs, young leaves, and flower buds stellate-pubescent. Bark gray to gray-brown, smooth or slightly roughened. Dormant buds naked, stellate-pubescent; terminal bud and 1 of each pair of lateral buds stalked, with 2 subtending scales. Leaves short-petiolate. Leaf blade broadly elliptic to obovate, pinnately veined, base oblique, cuneate, margins repand to sinuate, apex rounded to acute or short-acuminate. Inflorescences axillary, (1-) 3(-5) -flowered, stalked clusters. Flowers bisexual, appearing before or with leaves; calyx lobes 4, reflexed, adnate to ovary; petals 4, yellow or orange to deep red, liguliform, circinnate in bud, notched or truncate, sometimes pointed; stamens 4, very short within cup; anthers introrse, dehiscing by 2 valves hinged adaxially on connective; staminodes 4, opposite petals, bearing nectar; styles 2, subulate, spreading to recurved. Capsules solitary or 2-3 together, fused with persistent tubular calyx, stylar beaks very short, loculicidally 2-valved, woody, appressed stellate-pubescent, explosively dehiscent. Seeds 2 per capsule, black, glossy, bony, not winged. x = 12.[1] [more]
Hamelia
Hamelia is a of plants in the family Rubiaceae. [more]
Handelia
Loropetalum
Shrubs or small trees, evergreen or semievergreen; buds naked. Leaves shortly petiolate; stipules membranous; leaf blade membranous or thinly leathery, margin entire, venation pinnate. Inflorescence capitate, shortly spicate, or racemose, axillary or terminal, 3–25-flowered. Flowers bisexual, usually 4 or 5(or 6) -merous. Floral cup obconical, stellately pubescent. Sepals usually 4 or 5(or 6), ovate, pubescent, deciduous. Petals white or red, straplike, circinate in bud. Stamens 4 or 5(or 6), perigynous, anther thecae 2-sporangiate, each dehiscing by 2 valves, connective protrusion long and slender; disk scales present. Ovary inferior or semi-inferior; ovules 1 per locule. Fruiting pedicel short or absent. Capsules dehiscing by two 2-lobed valves, lower part enveloped by floral cup. Seeds 1 per carpel; endosperm fleshy.[2] [more]
Trichocladus
Trichocladus is a genus of in family Hamamelidaceae. [more]
At least 8 species and subspecies belong to the Genus Trichocladus.
More info about the Genus Trichocladus may be found here.
Bibliography
- Bradford, J. L. and D. L. Marsh. 1977. Comparative studies of the witch hazels Hamamelis virginiana and H. vernalis. Proc. Arkansas Acad. Sci. 31: 29-31.
- Chang Hung-ta. 1979. Hamamelidaceae. In: Chang Hung-ta, ed., Fl. Reipubl. Popularis Sin. 35(2): 36116.
- De Steven, D. 1983. Floral ecology of witch-hazel (Hamamelis virginiana). Michigan Bot. 22(4): 163-171.
- Fulling, E. H. 1953. American witch hazel--History, nomenclature, and modern utilization. Econ. Bot. 7(4): 359-389.
- Jenne, G. E. 1966. A Study of Variation in North American Hamamelis L. (Hamamelidaceae). M.S. thesis. Vanderbilt University.
- Sargent, C. S. 1890-1902. The Silva of North America.... 14 vols. Boston and New York. Vol. 5, pp. 3-5.
- Sargent, C. S. [1902-]1905-1913. Trees and Shrubs.... 2 vols. Boston and New York. Vol. 2, pp. 137-138.
- Shoemaker, D. N. 1905. On the development of Hamamelis virginiana. Bot. Gaz. 39: 248-266.
- Steyermark, J. A. 1934. Hamamelis virginiana in Missouri. Rhodora 36: 97-100.
- Steyermark, J. A. 1963. Flora of Missouri. Ames.
Footnotes
- "Hamamelis". in Flora of North America Vol. 3. Oxford University Press. Online at EFloras.org.
- Zhi-Yun Zhang, Hongda Zhang & Peter K. Endress "Loropetalum". in Flora of China Vol. 9 Page 32. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.
Sources
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