TreeTopics.com logo


Osage Orange Fact Sheet

Family:  Moraceae - Mulberry family
Latin name:  Maclura pomifera
Common name:  Osage orange, Hedge apple

Maclura pomifera - Osage orange single tree in mulberry section of Morton Arboretum Maclura pomifera - Osage orange row of trees in winter Maclura pomifera - Osage orange hedge row in winter Maclura pomifera - Osage orange spurs Maclura pomifera - Osage orange spurs and buds beginning to open Maclura pomifera - Osage orange fruit or flowers Maclura pomifera - Osage orange leaves Maclura pomifera - Osage orange leaf Maclura pomifera - Osage orange close  up of fruit showing pistils Maclura pomifera - Osage orange fruit Maclura pomifera - Osage orange Maclura pomifera - Osage orange fruit Maclura pomifera - Osage orange fruit Maclura pomifera - Osage orange  fruit Maclura pomifera - Osage orange seeds

Flowering and Fruiting- Osage-orange is dioecious. The simple, green, four-part flowers appear soon after the leaves on the same spurs, opening from April through June, and are wind pollinated. Male flowers are long peduncled axillary racemes 2.5 to 3.8 cm (1 to 1.5 in) long on the terminal leaf spur of the previous season; female flowers are in dense globose heads, axillary to the leaves, about 2.5 cm (1 in) in diameter (2). The female flower in ripening becomes very fleshy, forming a large multiple fruit or syncarp composed of 1-seeded drupelets. The fruit ripens from September through October. The ripe fruit, 7.6 to 15 ern (3 to 6 in) in diameter, yellowish-green, resembles an orange, often weighing more than a kilogram (2.2 lb). Fruits average 23/dkl (80 to the bu) (53). When bruised, the fruit exudes a bitter milky juice which may cause a skin rash and which will blacken the fruit on drying.

Female trees often produce abundant fruit when no male trees exist nearby, but such fruit contains no seeds.

http://www.na.fs.fed.us/spfo/pubs/silvics_manual/volume_2/maclura/pomifera.htm

Top of Page
Karren Wcisel © copyright 2004 - 2009

Send email to Karrenw@aol.com

Please ask for permission before using my photographs. Larger sizes and additional photographs of the tree are often available.

TreeTopics.com  Home Page