Western Sycamore

Platanus racemosa

Summary 7

Platanus racemosa is a species of sycamore tree known by several common names, including California sycamore, Western sycamore, California plane tree, and in Spanish Aliso. It is native to California and Baja California, where it grows in riparian areas, canyons, floodplains, at springs and seeps, and along streams and rivers in several types of habitats.

Description 8

Trees , to 15(-25) m, rather massive; trunks sometimes straight and erect, more commonly irregular, reclining, or prostrate with branches irregular and sometimes near ground, to 2+m diam. Leaves: stipules entire to somewhat dentate. Leaf blade dark green, 3-5-lobed, 10-25 × 10-25 cm, rather thick; lobes of blade mostly longer than wide, basal lobes usually somewhat smaller and spreading, not reflexed, sinuses broad and deeply concave, depth of distal sinuses about 1/3-2/3 distance from sinus to base of blade, terminal leaf lobe ca. 1/3-2/3 length of blade; margins entire to remotely serrulate, apex acute to acuminate, sometimes rounded; surfaces abaxially persistently tomentose, adaxially glabrescent. Pistillate inflorescences: heads (1-)2-7; fruiting heads 20-25(-30) mm diam., lateral ones sessile; fruiting rachis to 25 cm. Achenes 7-10 mm, basal hairs about 2/3 length of achenes. 2 n = 42.

Fuentes y créditos

  1. (c) ramirezstephie, algunos derechos reservados (CC BY-NC)
  2. (c) miheco, algunos derechos reservados (CC BY-SA), http://commons.wikimedia.org/wiki/File:Platanus_racemosa_California.jpg
  3. (c) 1998 California Academy of Sciences, algunos derechos reservados (CC BY-NC-SA), http://calphotos.berkeley.edu/cgi/img_query?seq_num=15679&one=T
  4. (c) 1998 California Academy of Sciences, algunos derechos reservados (CC BY-NC-SA), http://calphotos.berkeley.edu/cgi/img_query?seq_num=17711&one=T
  5. (c) 2009 Keir Morse, algunos derechos reservados (CC BY-NC-SA), http://calphotos.berkeley.edu/cgi/img_query?seq_num=271175&one=T
  6. (c) 2012 Daniel Passarini, algunos derechos reservados (CC BY-NC-SA), http://calphotos.berkeley.edu/cgi/img_query?seq_num=431936&one=T
  7. Adaptado por earthwatchtrees del trabajo de (c) Wikipedia, algunos derechos reservados (CC BY-SA), http://en.wikipedia.org/wiki/Platanus_racemosa
  8. (c) Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA, algunos derechos reservados (CC BY-NC-SA), http://eol.org/data_objects/5008626

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