Comments
provided by eFloras
L. D. Benson (1943) reported intermediates between Platanus wrightii and P . racemosa in southern California. He reduced P . wrightii to P . racemosa var. wrightii (S. Watson) L. Benson. Most authors have retained that taxon at the specific level because of its more deeply lobed, more glabrate leaves and its often pedunculate fruiting heads. Very low yields of germinable seeds were obtained from crosses of P . wrightii and P . racemosa with P . occidentalis (F. S. Santamour Jr. 1972b).
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Trees , to 25 m; trunks straight and erect to inclined or basally reclining or prostrate, to 1.2(-2) m diam., lower branches becoming thick, contorted. Leaves: stipules entire to somewhat dentate. Leaf blade dark green, deeply 3-5(-7)-lobed, 9-25 × 9-30 cm, rather thick; lobes of blade much longer than wide, basal lobes usually smaller and spreading, not reflexed, sinuses broad and very deeply concave, depth of distal sinuses equal or greater than distance from sinus to base of blade, terminal leaf lobe about 2/3 or more length of blade; margins entire to serrulate, apex acute to acuminate; surfaces abaxially and adaxially glabrescent. Pistillate inflorescences: heads (1-)2-4; fruiting heads to 20 mm diam., lateral heads sessile or pedunculate, peduncle often eventually obscured by maturing achenes; fruiting rachis to 25 cm. Achenes 5-8 mm, basal hairs about 2/3 or equal to length of achenes. 2 n = 42.
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Habitat & Distribution
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Flowering spring; fruiting late fall. Often abundant in riparian forests, especially in montane canyons, extending into deserts along streams and near springs, and cultivated; 600-2000+m; Ariz., N.Mex.; Mexico (Chihuahua, Sinaloa, and Sonora).
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Comprehensive Description
provided by North American Flora
Platanus wrightii S. Wats. Proc. Am. Acad
10: 349. 1875.
A tree, reaching a height of 25 m., bark smooth, light-colored, becoming rough and
dark on the old trunks ; twigs tomentose when young ; leaves 15-20 cm. long and wide,
3-5-nerved, 3-5-lobed, with narrow sinuses entire or nearly so, truncate or usually cordate
with a deep sinus at the base, glabrous above, pubescent beneath ; lobes elongate, acute,
divergent, the middle one about twice as long as wide and at least half as long as the blade ;
petioles pubescent or becoming glabrous ; stipules dentate or lobed ; peduncles tomentose,
bearing 3-5 heads ; fruiting heads 2-2.5 cm. in diameter, on pedicels about equaling the
heads ; achene glabrous, about 6 mm. long, exceeding the basal hairs, truncate and tipped
with a short style seldom more than 1 mm. long.
Type locality : Southeastern Arizona. Distribution : New Mexico, Arizona, and Sonera.
- bibliographic citation
- Frederick Vernon Coville, Nathaniel Lord Britton, Henry Allan Gleason, John Kunkel Small, Charles Louis Pollard, Per Axel Rydberg. 1908. GROSSULARIACEAE, PLATANACEAE, CROSSOSOMATACEAE, CONNARACEAE, CALYCANTHACEAE, and ROSACEAE (pars). North American flora. vol 22(3). New York Botanical Garden, New York, NY
Platanus wrightii: Brief Summary
provided by wikipedia EN
Platanus wrightii, the Arizona sycamore, is a sycamore tree native to Arizona and New Mexico with its range extending south into the Mexican states of Sonora, Chihuahua, and Sinaloa.
The tree is a large deciduous tree, growing up to 82 ft (25 m).
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