|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Rosaceae||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Tree [(shrub)], thorny or not. Leaf: simple, toothed (entire). Inflorescence: few-flowered clusters at ends of short-shoots; pedicel bractlets generally 2--3, deciduous. Flower: hypanthium bractlets 0; stamens 20--30; ovary inferior, chambers 2--5, 2-ovuled, styles 2--5, +- free. Fruit: pome, generally +- obovoid; flesh gritty from stone cells.
Species In Genus: +- 25 species: northern temperate. Etymology: (Latin: pear) Note: Pyrus calleryana Dcne. (callery pear) possibly naturalized in California.
Unabridged Note: Pyrus calleryana Dcne. (callery pear), distinguished from Pyrus communis by its small fruits and curved stipules, frequently escapes from cultivation in eastern United States. In California, collections from Sacramento Co. are likely from rootstocks of abandoned pear trees, but a collection from Butte Co. is of escaped saplings, suggesting potential for more widespread escape in California.
eFlora Treatment Author: Michael A. Vincent
Jepson Online Interchange
Previous taxon: Pyracantha koidzumii
Next taxon: Pyrus communis
Citation for this treatment: Michael A. Vincent 2017. Pyrus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=11260, accessed on February 20, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 20, 2017.