Pawpaw, also known as Common Pawpaw or Custard Apple
Kingdom: Plantae, Division: Tracheophyta, Class: Magnoliopsida, Order: Magnoliales, Family: Annonaceae, Genus: Asimina, Species: Asimina triloba · Annonaceae (Custard Apple family) · Simple, deciduous leaf
Species
Asimina triloba
Leaf Type
Simple, deciduous leaf
Family
Annonaceae (Custard Apple family)
Shape
Oblanceolate to obovate with an acute apex and cuneate base
Size
Approximately 8-10 inches long and 3-4 inches wide, which is typical for mature leaves of this species. Adults typically range from 6 to 12 inches in length.
Margin
Entire (smooth) and slightly wavy
Arrangement
Alternate
Rarity
Common within its native range and forest habitats, though often overlooked due to its understory growth habit
Color & Pattern
Medium to dark green upper surface with a slightly paler underside. The central midrib and primary veins show a distinct brownish or reddish tint, typical of pressed and dried specimens of this species. Colors appear uniform and typical for a pressed herbarium specimen.
Venation Pattern
Pinnate venation with a prominent, raised midrib and distinctly looping secondary veins that run toward the margin
Texture & Surface
Smooth (glabrous) with a slightly leathery or papery texture resulting from the pressing process
Description
The pawpaw is a small, deciduous understory tree famous for producing the largest edible fruit native to North America. The leaves are characteristically large, drooping, and tropical in appearance, giving the understory a distinctly exotic look. In spring, the tree produces unusual, small, purple-brown flowers before the leaves fully emerge. In autumn, the foliage turns a bright, clear yellow before dropping.
Key Features
Distinguished by very large, simple, alternate leaves with entire margins and prominent pinnate venation, a distinctive unpleasant odor when crushed, and association with moist bottomland habitats
Habitat
Understory tree found typically in rich, moist bottomland forests, floodplains, and along riverbanks. Prefers deep, fertile, well-drained soils and partial to full shade when young.
Geographic Range
Native to eastern, southern, and Midwestern North America, ranging from New York west to southeastern Nebraska, and south to eastern Texas and Florida
Condition Notes
The leaves are in good, intact condition as pressed botanical specimens, showing no significant disease or insect damage, with typical flattening and color preservation.
Interesting Facts
Pawpaws are the exclusive host plant for the larvae of the Zebra Swallowtail butterfly. Despite their tropical appearance and relationship to custard apples and soursops, pawpaws are fully cold-hardy in temperate North American climates.
Medicinal & Uses
The sweet, custard-like fruits are edible and highly prized for raw consumption or baking. Bark and twigs contain acetogenins, which have been studied for potential anti-cancer and insecticidal properties. Non-toxic fruit pulp is safe, but seeds should not be ingested.
Ecological Role
Serves as a crucial larval host for the Zebra Swallowtail butterfly. The fruit is consumed by various mammals and birds, which aid in seed dispersal. The tree often forms dense clonal patches through root suckering.
Similar Species
Can be confused with other large-leaved understory plants or magnolia species, but can be distinguished by its alternate, simple leaves lacking stipules and the distinctive foul odor of crushed pawpaw leaves.
Foraging Tips
Look for pawpaw patches in damp, shaded woods along creeks and rivers. In late summer and autumn, look on the ground for fallen yellowish fruits with a strong, sweet, tropical fragrance. Leaves can be observed throughout the growing season.
Toxicity Warning
Non-toxic for the edible fruit flesh, but the seeds contain neurotoxins and should not be swallowed. The skin of the fruit and twigs can cause contact dermatitis or digestive upset in some sensitive individuals. Toxicity level: Mildly Toxic (specifically seeds and skin).