Tamarix tetranda 'Hulsdonk White'

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

Interesting Facts

Common Names

Description

Family Tamaricaceae

Shrubs , subshrubs , or trees . Leaves small, mostly scale-like, alternate, estipulate, usually sessile, mostly with salt-secreting glands . Flowers usually in racemes or panicles, rarely solitary, usually hermaphroditic , regular. Calyx 4- or 5-fid, persistent . Petals 4 or 5, free , deciduous after anthesis or sometimes persistent. Disk inferior, usually thick, nectarylike. Stamens 4, 5, or more numerous , usually free, inserted on disk, rarely united into fascicle at base , or united up to half length into a tube . Anthers 2-thecate, longitudinally dehiscent . Pistil 1, consisting of 2-5 carpels; ovary superior, 1-loculed; placentation parietal , rarely septate , or basal; ovules numerous, rarely few; styles short, usually 2-5, free, sometimes united. Capsule conic, abaxially dehiscent. Seeds numerous, hairy throughout or awned at apex; awns puberulous from base or from middle ; endosperm present or absent; embryo orthotropous .

Three genera and ca. 110 species: steppe and desert regions of the Old World; three genera and 32 species (12 endemic) in China.

Myrtama has been placed alternatively in Myricaria, Tamarix, or treated as a separate genus (see Gaskin et al. , Ann. Missouri Bot. Gard. 91: 402-410. 2004; Zhang et al., Acta Bot. Boreal.-Occid. Sin. 20: 421-431. 2000) .[1]

Genus Tamarix

Shrubs or trees , much branched. Young branches usually glabrous ; two types of branches present: ligneous growing branches, not deciduous in winter vs. green vegetative branchlets , deciduous in winter. Leaves alternate, sessile, amplexicaul or vaginate , small, scale-like, glabrous, rarely hairy , mostly with salt-secreting glands . Flowers in racemes or panicles, blooming in spring ; racemes lateral on growing branches of previous or current year and clustered in terminal panicles, or two types of flowering habits present in some species. Flowers bisexual , rarely unisexual , 4- or 5(or 6) -merous, usually pedicellate ; bract 1. Calyx herbaceous or fleshy , 4- or 5-fid; lobes entire or faintly denticulate . Petals as many as calyx lobes, deciduous or persistent after anthesis . Disk variously shaped, mostly 4- or 5-lobed; lobes entire, or apex retuse or even deeply divided . Stamens 4 or 5, opposite to calyx lobes, or numerous , outer series opposite to calyx lobes; filaments often free , inserted between lobes of disk or at apices of lobes; anthers cordate, versatile, 2-thecate, longitudinally dehiscent . Pistil consisting of 3 or 4 carpels; ovary mostly conic, many seeded; placentation basal-parietal; styles 3 or 4; stigmas capitate, short. Capsule conic, abaxially 3-septicidal. Seeds numerous, minute; apical awns villous .

About 90 species: Africa, Asia, Europe; 18 species (seven endemic) in China.[2]

Taxonomy

Notes

An accepted name in the RHS Horticultural Database.

Similar Species

Members of the genus Tamarix

ZipcodeZoo has pages for 15 species, subspecies, varieties, forms, and cultivars in this genus:

T. africana (African Tamarisk) · T. aphylla (Athel) · T. aralensis (Russian Tamarisk) · T. canariensis (Canary Island Tamarisk) · T. chinensis (China Tamarisk) · T. dioica (Saltcedar) · T. gallica (French Tamarisk) · T. parviflora (Saltcedar) · T. ramosissima (Five-Stamen Tamarix) · T. ramosissima 'Pink Cascade' (Five-Stamen Tamarix) · T. ramosissima 'Rosea' (Salt Cedar) · T. ramosissima 'Rubra' (Five-Stamen Tamarix) · T. ramosissima 'Summer Glow' (Five-Stamen Tamarix) · T. tetragyna (Saltcedar) · T. tetranda 'Hulsdonk White' (Four-Stamen Tamarisk 'hulsdonk White')

More Info

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Further Reading

• Zhang Pengyun & Zhang Yaojia. 1990. Tamaricaceae. In: Li Hsiwen, ed., Fl. Reipubl. Popularis Sin. 50(2): 142-177.
• Zhang Pengyun & Zhang Yaojia. 1990. Tamaricaceae. In: Li Hsiwen, ed., Fl. Reipubl. Popularis Sin. 50(2): 142-177.

Notes

Contributors

• Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 10, 2012.

Identifiers

• Zipcode Zoo Species Identifier: 4516482

Footnotes

1. Qiner Yang & John Gaskin "Tamaricaceae". in Flora of China Vol. 13 Page 58. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
2. "Tamarix". in Flora of China Vol. 13 Page 58, 59, 434. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]

©2004-2012 David Stang. All rights reserved.