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{{Taxobox
| color = lightgreen
| name = ''Castilla''
| image = Koeh-174.jpg
| image_width = 240px
| image_caption = ''Castilla elastica''
| regnum = [[Plant]]ae
| divisio = [[Magnoliophyta]]
| classis = [[Magnoliopsida]]
| ordo = [[Rosales]]
| familia = [[Moraceae]]
| genus = '''''Castilla'''''
| genus_authority = [[Vicente Cervantes|Cerv.]]
| subdivision_ranks = Species
| subdivision = See text
}}
'''''Castilla''''' (sometimes incorrectly spelled ''Castilloa'') is a tree [[genus]] belonging to the family [[Moraceae]] found native in Central America. The main species is ''Castilla elastica'', one of several plants from which rubber has been extracted. The vernacular name is ''Panama rubber tree'' or ''castilloa rubber''. The pre-Columbian MesoAmericans used the latex of this plant to make a ball used in a [[mesoamerican ballgame|ceremonial game]]. ''Castilla elastica'' is a weedy tree which has become invasive in areas where it has been introduced, such as in the South Pacific.
''Castilla'' species exhibit a phenomenon known as [[cladoptosis]] (the regular shedding of branches). This may be an adaptation to prevent the growth of climbing plants.
[[Image:Castilla.JPG|thumb|left|[[Castilla|''Castilla elastica'']], Panama rubber tree, showing scar where a branch has dropped. A recently fallen branch is posed at right]]
;Species and subspecies
*''[[Castilla elastica]]'' [[Martín Sessé y Lacasta|Sessé]] (Panama rubber tree)
*''[[Castilla elastica]]'' Sessé ssp. ''costaricana'' (Liebm.) C. C. Berg (Castilla)
*''[[Castilla elastica]]'' Sessé ssp. ''elastica'' (Castilloa rubber)
*''[[Castilla ulei]]'' Warb. (Caucho rubber)
==See also==
[[Rubber]]
==References==
[[Vicente Cervantes|Vicente (Vincente) de Cervantes]] (b. 1755, d. 1829), ''Castilla'', in Gazeta de Literatura de México 1794, Suppl.: 7. (2 July 1794)
==External links ==
*[http://www.hear.org/pier/species/castilla_elastica.htm Pacific Island Ecosystems at Risk (PIER): ''Castilla elastica'']
{{Commons|Castilla elastica|Castilla}}
[[Category:Moraceae]]
{{Rosales-stub}}