Platanus orientalis L.

Oriental planetree


Species recognized by The Integrated Taxonomic Information System external link, T Orrell (custodian) in 
IUCN Red List Status: Lower Risk/least concern (LR/lc) external link Showing: scientific names

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Platanus orientalis L.

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Platanus orientalis Linnaeus
Platanus orientalis Linnaeus
Platanus orientalis Linnaeus
Platanus orientalis L., 1753
Platanus orientalis L., 1753
Platanus orientalis L., 1753
Platanus orientalis L., 1753
Platanus orientalis L., 1753
Platanus orientalis L., 1753

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General Description

Description

Source and Additional Information
Project
Editor
S. I. Ali & M. Qaiser
Location
Citation
Flora of Pakistan Vol. 0 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.

Tree up to 25 m tall. Young leaves and shoots tomentose; tomentum deciduous, stellate, each hair 7-10 rayed with one long central hair. Leaves 5-7-lobed, 8-24 cm long, 12-30 cm broad; lobes coarsely toothed, glabrous; petiole 3-5 cm long. Stipules 2, c. 2 cm long, connate and tubular below; stipular tube membranous on the young shoots with a short limb and simple brown bristles; tomentose and leafy above on the older shoots. Male capitula sub-sessile, 2-3 on a peduncle, globose, 4-5 mm in diameter; peduncle c. 2 cm long. Perianth lobes free, c. 1 mm long, oblong, glabrous. Stamens 3-8, free, anthers oblong, 2.5 mm long; adnate to the connective; connective peltate with bristles at the apex. Female capitula sessile, 2-5 on a peduncle, globose, 1-1.5 cm in diameter; peduncle 7-11 cm long. Perianth lobes c. 2 mm long, spathulate with long jointed hair at the apex. Car¬pels 3-8, free; ovary linear, 1 mm long, covered with long jointed hairs, style 5-6 mm long, uncinate, persistant. Capitula of achenes 2-3 cm broad; achene c. 8 mm long, obpyramidal with long, jointed, yellow hair at the base ; style persistant.
References

Comments

Source and Additional Information
Project
Editor
S. I. Ali & M. Qaiser
Location
Citation
Flora of Pakistan Vol. 0 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.

The wood is not valuable but is used in some places for making guncarriages, small painted boxes and for cabinet work and paneling. The bark is medicinal.

The flowers are described here as complete with perianth and 3-8 stamens or pistils, showing affinity with the Hamamelidaceae and Rosaceae. Another interpretation of their structure is that each flower is apetalous and consists of a single stamen or pistil, subtended by a scale, thus showing closer affinity with the Urticaceae.

References

Description

Source and Additional Information
Project
Editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
Location
Citation
Flora of China Vol. 9: 44 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.

Trees deciduous, to 30 m tall. Young branchlets yellow-brown tomentose, old ones glabrous, becoming red-brown after drying, small lenticellate. Stipules less than 1 cm; petiole terete, 3–8 cm, tomentose; leaf blade broadly ovate, 9–18 × 8–16 cm, deeply (3 or)5- or 7-lobed, both surfaces gray-yellow pubescent at first, glabrate and then pubescent only along veins abaxially, principal veins 3 or 5, arising from base, base shallowly cordate or subtruncate; central lobe 7–9 × 4–6 cm, margin lobed; lateral lobes shorter, margin coarsely dentate. Flowers 4-merous. Male flowers: sepals short, small; stamens much longer than petals; filaments very short; anthers elongate. Female flowers: sepals pubescent; petals oblanceolate; carpels 4; styles elongate, apex crispate. Fruiting branchlets with (2 or)3–5 infructescences. Infructescence capitate, 2–2.5 cm in diam. Achenes with persistent style spiniform, 3–4 mm; basal hairs yellow; both styles and hairs exserted from infructescence. Fl. Mar–May, fr. Jun–Oct.
"Platanus orientalis L.". Encyclopedia of Life, available from "http://www.eol.org/pages/596130". Accessed 20 Mar 2010.