Asimina tetramera Small
  • Torreya
  • Four-petaled pawpaw

Cite taxon page as 'WFO (2021): Asimina tetramera Small. Published on the Internet; Accessed on: 17 Jun 2021'

General Information

Shrubs , 1-3 m. Branches 1-several from base, nearly erect to arching; new shoots red-brown to tan, distally minutely red-tomentose, glabrate. Leaves: petiole 2-3 mm. Leaf blade spreading to upswept, oblong-oblanceolate to broadly spatulate, 5-10(-18) cm, leathery, base narrowly cuneate, margins slightly revolute, apex rounded to obtuse-angled; surfaces abaxially glabrate, adaxially glabrous. Inflorescences from axils of new shoots, solitary flowers; peduncle slender, 1-2 cm; bracteole 1, basal, lance-oblong, 5-7 mm, hairy. Flowers nodding to nearly erect, reddish, fetid; perianth (3-)4-merous; sepals elliptic or ovate, ca. 1 cm, abaxially sparsely rusty-hairy; outer petals ascending with spreading pale tips, lanceolate to oblong-lanceolate, 2-2.5 cm, margins slightly revolute, surfaces abaxially glabrate; inner petals ovate-acute or short-acuminate, ca. 1/2 length of outer petals, fleshier than outer petals, base large, saccate, corrugate zone adaxially deep purple; pistils 3-11. Berries yellow-green, 5-9 cm. Seeds chestnut brown, 1-2 cm. 2 n =18.

  • Provided by: [B].Flora of North America @
    • Source: [
    • 1
    • ]. 

    Other Local Names

    Four-petaled pawpaw

     Information From

    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Flora of North America @
    'Flora of North America @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Flora of North America Association
    World Flora Online consortium
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).
    Global Tree Search
    BGCI. 2018. GlobalTreeSearch online database. Botanic Gardens Conservation International. Richmond, U.K. Available at Accessed on 30/11/2018.
    • D Botanic Gardens Conservation International
    International Union for Conservation of Nature v.3
    IUCN 2019. The IUCN Red List of Threatened Species. Version 2019-1.
    • E See IUCN Terms and conditions of use
    International Union for Conservation of Nature
    IUCN 2016. IUCN Red List of Threatened Species. Version 2016-2
    • F All Rights Reserved