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Annonaceae Juss.

Custard-apple Family

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Family Overview

Annonaceae Juss., the Custard-apple Family, is the largest family in the order Magnoliales, comprising 108 accepted extant genera and approximately 2,500 species in the Tree TSAR treatment. The family is overwhelmingly tropical and is especially diverse in lowland rainforests, where its trees, shrubs, and woody climbers can be major components of both the understory and canopy. Familiar members include the custard-apples, soursop, cherimoya, sugar apple, ylang-ylang, and North American pawpaw. Although its greatest diversity lies in the tropics, Asimina provides a striking temperate exception, with Asimina triloba extending through eastern North America to the Great Lakes region and southern Canada. (Chatrou et al., 2012; Nge et al., 2024; Royal Botanic Gardens, Kew, 2026).

The Custard-apple Family consists of woody plants: trees, shrubs, and lianas or other woody climbers. Many species are readily recognized vegetatively by their simple, alternate, usually two-ranked leaves with entire margins and no stipules, together with tough, fibrous inner bark that is often aromatic. The flowers are typically radially symmetrical and three-parted, most often with three sepals and six petals arranged in two whorls. Numerous stamens and carpels are commonly crowded on the receptacle. Fruits are especially diverse. In many genera the individual carpels mature as separate fleshy units called monocarps, while in Annona and several other lineages the carpels become united into a single compound or syncarpous fruit. The combination of fibrous aromatic bark, exstipulate leaves, trimerous flowers, numerous reproductive organs, and ruminate seed endosperm gives Annonaceae a distinctive family-level morphology. (Royal Botanic Gardens, Kew, 2026).

Pollination is another characteristic feature of the family’s biology. Beetles are the predominant pollinators, and pollination by small beetles appears to represent the ancestral condition within Annonaceae. Many species combine protogyny, in which the female phase of the flower precedes the male phase, with strong floral scents and partially enclosed floral chambers that attract and temporarily retain pollinating insects. Large beetles, thrips, flies, bees, and even cockroaches have independently become important pollinators in particular lineages, making Annonaceae an unusually informative family for studying shifts among insect-pollination systems. (Saunders, 2012).

Classification and evolutionary relationships

Modern molecular systematics has transformed the classification of Annonaceae. A family-wide molecular treatment established the now familiar four-subfamily framework of Anaxagoreoideae, Ambavioideae, Annonoideae, and Malmeoideae. (Chatrou et al., 2012). Complete genus-level nuclear phylogenomics subsequently sampled all recognized genera across 373 nuclear loci and resolved many relationships that had remained uncertain in plastid-based classifications. That work recognized 25 subtribes and demonstrated, among other changes, that Artabotrys belongs in Duguetieae rather than Xylopieae and that Meiocarpidium is best treated within Ambavioideae at tribal rank rather than as a separate subfamily. (Nge et al., 2024). A broader phylogenomic analysis of magnoliids has independently supported the four-subfamily structure and the placement of Meiocarpidieae within Ambavioideae. (Helmstetter et al., 2025).

Tree TSAR recognizes 108 genera, following the specialist phylogenomic treatment of Nge et al. (2024). This differs slightly from the current Plants of the World Online backbone, which recognizes 107 genera and places Winitia in synonymy under Stelechocarpus. Tree TSAR retains Winitia. Dedicated molecular analyses recovered Winitia and Stelechocarpus as distinct lineages, and a later study specifically reaffirmed the generic status of Winitia; the complete family phylogeny likewise retains it and places Winitia, Stelechocarpus, and Sageraea together in Winitiinae. (Chaowasku et al., 2020; Nge et al., 2024).

Not every generic boundary is necessarily final. Nuclear phylogenomics recovered Oxandra as polyphyletic, indicating that its present circumscription requires additional study. Other recent work has simplified some older generic concepts, including the treatment of Mitrella within Pyramidanthe and Stenanona within Desmopsis. The accepted genera used by Tree TSAR therefore represent a current phylogenetic synthesis rather than a frozen historical checklist. (Bangkomnate et al., 2021; Schatz et al., 2023; Nge et al., 2024).

Within Magnoliales, Eupomatiaceae is the sister family of Annonaceae, a relationship repeatedly recovered by molecular studies and retained in recent phylogenomic classifications. The resemblance between the two families is partly ancestral, however, and Eupomatiaceae remains morphologically distinct enough to warrant recognition as a separate family. (Chatrou et al., 2012; Helmstetter et al., 2025).

An ancient tropical lineage

Annonaceae is an ancient flowering-plant lineage whose evolutionary history extends deep into the Cretaceous. Fossil-calibrated analyses have placed a conservative minimum age of approximately 112 million years for the Annonaceae stem lineage and about 89 million years for crown Annonaceae. Diverse fossil seeds from the Eocene London Clay further indicate that the four principal lineages represented by the modern subfamilies had diverged by roughly 50 million years ago. (Pirie & Doyle, 2012).

The family’s present pantropical distribution was not produced by a single process. Biogeographic reconstruction indicates that early Annonaceae achieved major intercontinental movements through warm boreotropical forests extending across northern latitudes, followed later by long-distance dispersal as climates cooled and those northern connections disappeared. The modern distribution therefore reflects both persistence of ancient regional lineages and repeated dispersal across major geographic barriers. (Couvreur et al., 2011).

Horticultural and Agricultural Uses

The best-known agricultural members of Annonaceae belong to Annona. Important cultivated fruits include cherimoya (Annona cherimola), soursop (A. muricata), sugar-apple or sweetsop (A. squamosa), ilama (A. diversifolia), and biriba (A. mucosa). Their climatic requirements differ considerably: some are adapted to humid tropical conditions, while cherimoya performs best in cooler subtropical or tropical highland climates. Atemoya, the hybrid A. cherimola × A. squamosa, combines characteristics of two major cultivated species and has become an important commercial fruit in warm regions. (Leal & Paull, 2023).

The North American pawpaw, Asimina triloba, represents an unusual temperate counterpart to the tropical fruit crops of Annona. Its large fruits have soft aromatic pulp, and selected cultivars are increasingly grown as specialty orchard and native fruit crops. Pawpaw seeds are recalcitrant, meaning that they lose viability when dried, and propagation from seed normally requires moist chilling followed by warm conditions. Named cultivars must be propagated clonally, most commonly by grafting or budding onto seedling rootstocks. (Geneve et al., 2003).

Annonaceae also includes one of the world’s important perfume plants. Flowers of Cananga odorata, ylang-ylang, are distilled to produce an essential oil widely used in perfumery, cosmetics, and fragrance products. The composition and commercial grade of the oil vary with distillation conditions and collection practices. (Tan et al., 2015).

Numerous Annonaceae have long histories of local medicinal, aromatic, fiber, food, and material use, and the family is chemically rich in alkaloids, acetogenins, terpenoids, and other secondary compounds. Laboratory studies have reported a wide range of biological activities from these compounds, but experimental bioactivity should not be treated as equivalent to demonstrated clinical efficacy. At family level, the most securely established economic roles remain fruit production, fragrance, regional traditional uses, and the horticultural value of selected trees, shrubs, and climbers.

Conservation Issues

Conservation risk in Annonaceae is concentrated especially in lowland and premontane tropical forests, where much of the family’s species richness occurs. Habitat conversion, forest fragmentation, logging, agricultural expansion, and degradation of specialized habitats threaten many narrow-ranging species. Understory trees and lianas can be particularly easy to overlook in botanical inventories, so incomplete collecting and unresolved taxonomy continue to obscure the true conservation status of many members of the family.

Madagascar illustrates the combination of exceptional endemism and substantial conservation pressure found in parts of the family. A recent island-wide synthesis documented 102 native Annonaceae species in nine genera, approximately 99% of them endemic, with the greatest diversity concentrated in the eastern humid and Sambirano regions. Preliminary assessments placed 53.9% of the flora in threatened categories. Many species also persist in modified landscapes, however, emphasizing that conservation value is not confined to formally protected primary forest. (Ravomanana et al., 2026).

Global Red List coverage remains incomplete, so additional field collection, taxonomic revision, population assessment, and habitat mapping are fundamental conservation tools for Annonaceae. This is especially important for poorly known tropical species whose ranges may be much smaller than herbarium records initially suggest.

In situ conservation is particularly important because reproduction in many Annonaceae depends on specialized interactions with pollinators and animal dispersers. Ex situ collections in botanic gardens, living conservation collections, seed research, and propagation programs can complement habitat protection, but they cannot fully reproduce the ecological networks on which wild populations depend.

Major Clades

Tree TSAR recognizes four subfamilies, 21 tribes, and 25 subtribes within Annonaceae. The structure is based principally on the complete nuclear phylogenomic classification of Nge et al. (2024), supplemented by subsequent and current nomenclatural treatment. Tree TSAR recognizes the formally established clades:

Anaxagoreoideae is the earliest-diverging extant branch of the family and contains only Anaxagorea, placed by Tree TSAR in Anaxagoreeae. Its unusual disjunction between tropical America and tropical Asia is unique among Annonaceae genera.

Ambavioideae contains nine genera divided among Canangeae, Meiocarpidieae, and Tetramerantheae. Its comparatively small size masks considerable evolutionary importance because these lineages diverged before the enormous radiations represented by Annonoideae and Malmeoideae. Meiocarpidium is treated in the monogeneric Meiocarpidieae rather than in a separate subfamily.

Annonoideae contains 48 accepted genera in the Tree TSAR treatment and includes many of the family’s most familiar and species-rich lineages, among them Annona, Asimina, Artabotrys, Duguetia, Guatteria, Uvaria, and Xylopia. Its eight tribes are Bocageeae, Annoneae, Duguetieae, Guatterieae, Monodoreae, Ophrypetaleae, Uvarieae, and Xylopieae. Nuclear evidence is particularly important here in placing Artabotrys with Duguetieae rather than alongside Xylopia.

Malmeoideae contains 50 accepted genera and nine tribes. Miliuseae is especially diverse and historically difficult to resolve, but modern nuclear data now distinguish a series of well-supported subtribal lineages, including Oropheinae, Huberanthinae, Neo-uvariinae, Winitiinae, Popowiinae, Polyalthiopsidinae, Phaeanthinae, and Sapranthinae. The subtribal framework captures substantial evolutionary structure that would be lost if all of these genera were displayed simply as members of Miliuseae. (Nge et al., 2024).

Accepted Genera
Afroguatteria Boutique (1951)
Alphonsea Hook.f. & Thomson (1855)
Ambavia Le Thomas (1972)
Anaxagorea A.St.-Hil. (1825)
Annickia Setten & Maas (1990)
Annona L. (1753)
Anonidium Engl. & Diels (1900)
Artabotrys R.Br. (1820)
Asimina Adans. (1763) Pawpaw
Asteranthe Engl. & Diels (1901)
Bocagea A.St.-Hil. (1825)
Bocageopsis R.E.Fr. (1931)
Brieya De Wild. (1914)
Cananga (Dunal) Hook.f. & Thomson (1855)
Cardiopetalum Schltdl. (1834)
Cleistochlamys Oliv. (1867)
Cleistopholis Pierre ex Engl. (1897)
Cremastosperma R.E.Fr. (1930)
Cyathocalyx Champ. ex Hook.f. & Thomson (1855)
Cymbopetalum Benth. (1860)
Dasymaschalon (Hook.f. & Thomson) Dalla Torre & Harms (1901)
Dendrokingstonia Rauschert (1982)
Dennettia Baker f. (1913)
Desmopsis Saff. (1916)
Desmos Lour. (1790)
Diclinanona Diels (1927)
Dielsiothamnus R.E.Fr. (1953)
Disepalum Hook.f. (1860)
Drepananthus Maingay ex Hook.f. & Thomson (1872)
Duckeanthus R.E.Fr. (1934)
Duguetia A.St.-Hil. (1824)
Ephedranthus S.Moore (1895)
Fenerivia Diels (1925)
Fissistigma Griff. (1854)
Friesodielsia Steenis (1948)
Froesiodendron R.E.Fr. (1956)
Fusaea (Baill.) Saff. (1914)
Goniothalamus (Blume) Hook.f. & Thomson (1855)
Greenwayodendron Verdc. (1969)
Guatteria Ruiz & Pav. (1794)
Hexalobus A.DC. (1832)
Hornschuchia Nees (1821)
Huberantha Chaowasku (2015)
Isolona Engl. (1897)
Klarobelia Chatrou (1998)
Leoheo Chaowasku (2018)
Letestudoxa Pellegr. (1920)
Lettowianthus Diels (1936)
Lukea Cheek & Gosline (2022)
Maasia Mols, Kessler & Rogstad (2008)
Malmea R.E.Fr. (1906)
Marsypopetalum Scheff. (1870)
Meiocarpidium Engl. & Diels (1900)
Meiogyne Miq. (1865)
Mezzettia Becc. (1871)
Miliusa Lesch. ex A.DC. (1832)
Mischogyne Exell (1932)
Mitrephora (Blume) Hook.f. & Thomson (1855)
Mkilua Verdc. (1970)
Monanthotaxis Baill. (1890)
Monocarpia Miq. (1865)
Monocyclanthus Keay (1953)
Monodora Dunal (1817)
Monoon Miq. (1865)
Mosannona Chatrou (1998)
Mwasumbia Couvreur & D.M.Johnson (2009)
Neo-uvaria Airy Shaw (1939)
Neostenanthera Exell (1935)
Onychopetalum R.E.Fr. (1931)
Ophrypetalum Diels (1936)
Orophea Blume (1825)
Oxandra A.Rich. (1841)
Phaeanthus Hook.f. & Thomson (1855)
Phoenicanthus Alston (1931)
Piptostigma Oliv. (1865)
Platymitra Boerl. (1899)
Polyalthia Blume (1830)
Polyalthiopsis Chaowasku (2018)
Polyceratocarpus Engl. & Diels (1900)
Popowia Endl. (1839)
Porcelia Ruiz & Pav. (1794)
Pseudartabotrys Pellegr. (1920)
Pseudephedranthus Aristeg. (1969)
Pseudomalmea Chatrou (1998)
Pseudoxandra R.E.Fr. (1937)
Pseuduvaria Miq. (1858)
Pyramidanthe Miq. (1865)
Ruizodendron R.E.Fr. (1936)
Sageraea Dalzell (1851)
Sanrafaelia Verdc. (1996)
Sapranthus Seem. (1866)
Sirdavidia Couvreur & Sauquet (2015)
Sphaerocoryne Scheff. ex Ridl. (1917)
Stelechocarpus Hook.f. & Thomson (1855)
Tetrameranthus R.E.Fr. (1939)
Toussaintia Boutique (1951)
Tridimeris Baill. (1869)
Trigynaea Schltdl. (1834)
Trivalvaria (Miq.) Miq. (1865)
Unonopsis R.E.Fr. (1900)
Uvaria L. (1753)
Uvariastrum Engl. (1901)
Uvariodendron (Engl. & Diels) R.E.Fr. (1930)
Uvariopsis Engl. (1899)
Wangia X.Guo & R.M.K.Saunders (2014)
Winitia Chaowasku (2013)
Wuodendron B.Xue, Y.H.Tan & Chaowasku (2018)
Xylopia L. (1759)

Additional Information

  • iNaturalist: Family taxon page, observations, photographs, and community identifications. iNaturalist uses “Custard-Apples” as its English family common name. Link

  • Plants of the World Online: Kew family backbone with nomenclature, distributional information, descriptions, and accepted genera. POWO currently recognizes 107 genera because it places Winitia under Stelechocarpus. Link

  • Flora of North America: Regional treatment of Annonaceae in North America. It predates the modern family-wide phylogenomic classification and retains some older generic concepts. Link

  • Flora of China: Regional treatment of Chinese Annonaceae; useful for morphology, identification, and distribution, although some generic circumscriptions predate later revisions. Link

  • World Flora Online: Current global taxonomic treatment and nomenclatural resource for Annonaceae and its infrafamilial groups. Link

  • International Plant Names Index: Nomenclatural record for Annonaceae Juss.; records publication in Jussieu’s Genera Plantarum in 1789 and the family name as conserved. Link

  • GBIF: Global occurrence and taxonomic data aggregated from biodiversity institutions and observation networks. Link

  • World Annonaceae: Specialist resource devoted to the systematics, taxonomy, and diversity of Annonaceae. Link

References and Further Reading

Bangkomnate, R., Damthongdee, A., Baka, A., Aongyong, K., & Chaowasku, T. (2021). Pyramidanthe and Mitrella (Annonaceae, Uvarieae) unified: molecular phylogenetic and morphological congruence, with new combinations in Pyramidanthe. Willdenowia, 51.

Chaowasku, T., Aongyong, K., Damthongdee, A., Jongsook, H., & Johnson, D. M. (2020). Generic status of Winitia (Annonaceae, Miliuseae) reaffirmed by molecular phylogenetic analysis, including a new species and a new combination from Thailand. European Journal of Taxonomy, 659, 1–23. DOI: 10.5852/ejt.2020.659

Chatrou, L. W., Pirie, M. D., Erkens, R. H. J., Couvreur, T. L. P., Neubig, K. M., Abbott, J. R., Mols, J. B., Maas, J. W., Saunders, R. M. K., & Chase, M. W. (2012). A new subfamilial and tribal classification of the pantropical flowering plant family Annonaceae informed by molecular phylogenetics. Botanical Journal of the Linnean Society, 169, 5–40. DOI: 10.1111/j.1095-8339.2012.01235.x

Couvreur, T. L. P., Pirie, M. D., Chatrou, L. W., Saunders, R. M. K., Su, Y. C. F., Richardson, J. E., & Erkens, R. H. J. (2011). Early evolutionary history of the flowering plant family Annonaceae: steady diversification and boreotropical geodispersal. Journal of Biogeography, 38, 664–680. DOI: 10.1111/j.1365-2699.2010.02434.x

Geneve, R. L., Pomper, K. W., Kester, S. T., Egilla, J. N., Finneseth, C. L. H., Crabtree, S. B., & Layne, D. R. (2003). Propagation of pawpaw: A review. HortTechnology, 13, 428–433. DOI: 10.21273/HORTTECH.13.3.0428

Helmstetter, A. J., et al. (2025). Toward a phylogenomic classification of magnoliids. American Journal of Botany, 112, e16451. DOI: 10.1002/ajb2.16451

Leal, F., & Paull, R. E. (2023). Annona: botanical characteristics, horticultural requirements and uses. Crop Science, 63, 1030–1049. DOI: 10.1002/csc2.20833

Nge, F. J., Chaowasku, T., Damthongdee, A., et al. (2024). Complete genus-level phylogenomics and new subtribal classification of the pantropical plant family Annonaceae. Taxon, 73, 1341–1369. DOI: 10.1002/tax.13260

Pirie, M. D., & Doyle, J. A. (2012). Dating clades with fossils and molecules: the case of Annonaceae. Botanical Journal of the Linnean Society, 169, 84–116. DOI: 10.1111/j.1095-8339.2012.01234.x

Ravomanana, E., et al. (2026). Diversity, distribution and conservation of Annonaceae (Magnoliales) in Madagascar. Biological Conservation, 316, 111778. DOI: 10.1016/j.biocon.2026.111778

Saunders, R. M. K. (2012). The diversity and evolution of pollination systems in Annonaceae. Botanical Journal of the Linnean Society, 169, 222–244. DOI: 10.1111/j.1095-8339.2011.01208.x

Schatz, G. E., Ortiz-Rodriguez, A. E., Martínez-Velarde, M. F., & Couvreur, T. L. P. (2023). New combinations and new names in Desmopsis (Annonaceae). Novon, 31, 266–268. DOI: 10.3417/2023867

Tan, L. T. H., Lee, L. H., Yin, W. F., Chan, C. K., Abdul Kadir, H., Chan, K. G., & Goh, B. H. (2015). Traditional uses, phytochemistry, and bioactivities of Cananga odorata (ylang-ylang). Evidence-Based Complementary and Alternative Medicine, 2015, 896314. DOI: 10.1155/2015/896314

Royal Botanic Gardens, Kew. (2026). Annonaceae Juss. Plants of the World Online. Link

World Flora Online. (2026). Annonaceae Juss. and associated infrafamilial taxon records. Link

International Plant Names Index. (2026). Annonaceae Juss., Gen. Pl. 283 (1789), nom. cons. Link