Jepson Herbarium
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Jepson eFlora: Taxon page
Vascular Plants of California
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Maclura

OSAGE ORANGE

Higher Taxonomy
Family: MoraceaeView DescriptionDichotomous Key

Common Name: MULBERRY FAMILY
Habit: [Perennial herb] shrub, [vine] tree, generally with milky juice; monoecious or dioecious. Leaf: alternate [opposite], petioled, generally simple, entire to lobed, evergreen or deciduous; stipules present. Inflorescence: raceme, spike, head, or flowers enclosed in thick receptacle, axillary. Flower: unisexual or bisexual, small, +- radial; sepals generally 4, free or fused at base; petals 0; stamens generally 4, opposite sepals; ovary generally superior, 1-chambered, style simple or 2-parted. Fruit: achenes many within fleshy calyces or surrounded by fleshy inflorescence receptacle.
Genera In Family: 37 genera, 1100 species: tropics, subtropics, some temperate; many cultivated (Ficus, fig; Artocarpus, breadfruit, jackfruit; Morus, mulberry). Note: Insect- or wind-pollinated.
eFlora Treatment Author: Alan T. Whittemore & Elizabeth McClintock
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Maclura
Habit: Tree, thorny; dioecious. Stem: buds scaly; stipule scars obscure, not encircling stem. Leaf: alternate, or clustered with inflorescences, entire, deciduous; major veins pinnate. Inflorescence: +- erect, spheric; staminate an umbel or umbel-like raceme, > 1 per axil, peduncled; pistillate a head, 1 per axil, sessile. Pistillate Flower: style simple. Fruit: spheric, bumpy, of many achenes within fleshy calyces, yellow-green [red].
Species In Genus: +- 12 species: warm parts of America, Africa, Asia, Australia. Etymology: (William McClure, American geologist, 1760--1840) Note: Wind-pollinated.
Jepson eFlora Author: Alan T. Whittemore & Elizabeth McClintock
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Ficus carica
Next taxon: Maclura pomifera

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Citation for this treatment: Alan T. Whittemore & Elizabeth McClintock 2012, Maclura, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=9681, accessed on February 05, 2025.

Citation for the whole project: Jepson Flora Project (eds.) 2025, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on February 05, 2025.