UW Burke Herbarium species comparison

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Maclura pomifera

Maclura

Osage-orange

osage orange
Habit Deciduous, dioecious, brownish-barked trees 5-20 m. tall, the branches armed with stout spines 1-2 cm. long, the juice milky.
Leaves

Leaves alternate, entire, long-petiolate, the blades ovate-lanceolate, 5-12 cm. long.

Flowers

Staminate flowers in axillary, subglobose, pedunculate racemes, the pedicles slender;

perianth 4-lobed nearly to the base;

stamens 4, opposite the lobes; pistillate inflorescence a dense, globose, subsessile, axillary head;

perianth 4-lobed, covering the ovary;

style 1, filiform.

Fruits

Mature fruits in a large, rough, globose cluster 7-12 cm. in diameter, the achenes concealed in the fleshy receptacle.

Maclura pomifera

Maclura
Flowering time May-June
Habitat Open, disturbed areas, often along riparian corridors or abandoned fields.
Distribution
Occurring east of the Cascades crest in southeastern Washington; south-central Washington to California, east to west-central Idaho, native from the south-central U.S. to the mid-Atlantic states.
[WildflowerSearch map]
[BONAP county map]
[BONAP county map]
Origin Introduced from elsewhere in United States Introduced
Conservation status Not of concern Not of concern
Subordinate taxa
M. pomifera
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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