Annonaceae
Annona

Annona senegalensis Pers.

First published in Syn. Pl. 2: 95 (1806)
This species is accepted
The native range of this species is Africa. It is a shrub or tree and grows primarily in the seasonally dry tropical biome.

Descriptions

Annonaceae, B. Verdcourt. Flora of Tropical East Africa. 1971

Morphology General Habit
Shrub or small tree (0.8–) 1.5–10m. tall; bark grey-brown, often rough and corrugated; young stems mostly ferruginous velvety to greyish tomentose, at length glabrous; leaf-bases and scars mostly prominent, often with raised lines decurrent beneath them.
Morphology Leaves
Leaf-blades oblong to ovate or elliptic, (4–)6–18.5(–34) cm. long, 2.5–11.5(–26) cm. wide, obtuse or apiculate to rounded or slightly emarginate at the apex, cuneate or truncate to cordate at the base, papery to coriaceous, glabrous or sparsely pubescent above save for hairy midrib, glabrescent to thickly ferruginous velvety beneath; venation reticulate beneath; petiole (0.5–)1–2(–2.5) cm. long, glabrous to velvety tomentose.
Morphology Reproductive morphology Flowers
Flowers solitary or in fascicles of 2–4, extra-axillary; pedicels 1–2.7 cm. long, tomentose; bracteoles 1–2 or wanting, small.
Morphology Reproductive morphology Flowers Calyx
Sepals ovate-triangular, 3–4 mm. long, 4–5 mm. wide, obtuse to acute, pubescent or tomentose outside, glabrous inside.
Morphology Reproductive morphology Flowers Corolla
Petals greenish outside, creamy to yellowish or pinkish within, sometimes blotched with purple, or crimson blotched at base inside, fleshy; outer broadly ovate, 0.8–1.2(–1.5) cm. long, 0.9–1.1 cm. wide, obtuse, adpressed greyish or yellowish pubescent outside, glabrous or minutely papillose within; inner narrowly oblong, trigonous, 0.8–1 cm. long, 2.5–3 mm. wide.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens linear, 1.7–2.5 mm. long; anther-cells equal or unequal at the base; connective-prolongation obliquely capitate, minutely papillose.
Morphology Reproductive morphology Flowers Gynoecium Carpels
Carpels cylindric, 1–1.5 mm. long, glabrescent.
Morphology Reproductive morphology Fruits
Fruiting stalks 1.5–5 cm. long; fruits yellow or orange, ovoid or globose, 2.5–5 cm. long, 2.5–4 cm. wide; areoles slightly raised, very obtuse, glabrescent.
Morphology Reproductive morphology Seeds
Seeds numerous, orange-brown, cylindric, oblong or obovate-oblong, compressed, 0.8–1.4 cm. long, 4–6(–8.5) mm. wide, 3.5–5 mm. thick; aril fibrillated, ± 2 mm. long.
Distribution
As above with the addition of Angola
[FTEA]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/136996621/146212025

Conservation
LC - least concern
[IUCN]

Annonaceae, N. K. B. Robson. Flora Zambesiaca 1:1. 1960

Morphology Reproductive morphology Seeds
Seeds numerous, c. 10 mm. long, cylindric or ± flattened, orange-brown; aril pectinate.
Morphology General Habit
Shrub or small tree, 1.5–8 (10) m. high.
Morphology Branches
Branches cylindric or with opposite pairs of raised lines decurrent from the leaf-bases, ± densely brown- to yellow– or greyish-tomentose at first, eventually glabrous.
Morphology Leaves
Leaves petiolate; lamina 6–18.5 (30) x 3–11.5 (21) cm., oblong to ovate or elliptic, obtuse or apiculate to rounded or slightly emarginate at the apex, cordate to truncate or cuneate at the base, chartaceous to coriaceous (more rarely membranous), yellowish-or glaucous-green and ± sparsely puberulous or more rarely glabrous above, paler or glaucous and densely sericeous-tomentose to glabrescent below, with green to reddish-purple nerves and densely reticulate venation prominent below; petiole (5) 10–20 (25) mm. long, densely tomentose to glabrous.
Morphology Reproductive morphology Flowers
Flowers solitary or rarely 2–4-fasciculate, extra-axillary, erect or ± deflexed; pedicels 10–20 mm. long, shortly tomentose; bracteoles 0–1 (2), small.
Morphology Reproductive morphology Flowers Calyx
Sepals 3–4 mm. long, ovate-triangular, obtuse to acute, pubescent or tomentose outside, glabrous within.
Morphology Reproductive morphology Flowers Corolla
Petals greenish outside, yellow to cream within, fleshy, the outer ones 8–12 (15) mm. long, broadly ovate, concave, obtuse, shortly and densely greyish- or yellowish-appressed-pubescent outside, glabrous, or minutely papillose within, the inner ones somewhat shorter, narrowly oblong, almost triquetrous.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 1.75–2.5 mm. long, linear, with thecae equal or unequal at the base; connective-prolongation obliquely capitate and minutely papillose; filament ± cuneate.
Morphology Reproductive morphology Flowers Gynoecium Carpels
Carpels c. 1–1.5 mm. long, cylindric, glabrescent; stigmas subclavate.
Morphology Reproductive morphology Fruits
Fruit on a pedicel 15–30 mm. long, erector spreading; syncarp 2.5–5 x 2.5–3 cm., ovoid or globose, obtusely squamose, glabrescent, orange or yellow.
[FZ]

Sources

  • Flora Zambesiaca

    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0