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This genus is accepted, and its native range is Tropical & Subtropical America, Gabon to Tanzania and S. Tropical Africa, Turkey to Iran, SW. Australia.

[FZ]

Rafflesiaceae, B.L. Stannard. Flora Zambesiaca 9:2. 1997

Morphology General Habit
Small parasites of trees in the family Leguminosae, vegetatively much reduced, only the flowers emerging on the smaller branches of the host.
Morphology Reproductive morphology Flowers
Flowers numerous, involucrate, globose, ovoid or ellipsoid, unisexual by abortion. Male flowers: stamen filaments connate into a tube about a central column (pistillode); pistillode (and gynandroecial column) expanded apically into a disk (pileus) fringed with papillae; anthers sessile, 1–several-seriate below the pileus rim. Female flowers: ovary inferior surmounted by a fleshy disk; disk flat, concave or convex, sometimes appearing as a simple extension of the style; style short, thick, conical or cylindrical; stigma capitate, the stigmatic surface hemispherical or a subapical annular ring.
Morphology Reproductive morphology Flowers Perianth
Perianth segments 4–12, free, similar to the bracts, imbricate, persistent, enclosing an annular disk at the base.
Morphology Reproductive morphology Fruits
Berry globose, surrounded by persistent bracts and perianth segments.

[FTEA]

Rafflesiaceae, Bernard Verdcourt. Flora of Tropical East Africa. 1998

Morphology General Habit
Small parasites of the tribe Amherstieae of Leguminosae with only the numerous flowers emerging through the bark of smaller branches of the host
Morphology General Buds
Buds subglobose, at first covered with entire hemispherical grey-brown ± scaly involucre, which breaks irregularly to form either 3 ‘bracts’ or is ± circumscissile leaving a cup 3–4 mm. wide; flowers usually 1 within each ‘bud’ but occasionally 2 or even 3 ( fide Welwitsch)
Morphology Reproductive morphology Flowers
Flowers globose, ovoid or ellipsoid, unisexual; outer 3 bract-like tepals broadly ovate or ± semicircular, free, imbricate, persistent; inner tepals ovate or elliptic, persistent Female flowers: ovary half-inferior, surrounded by the fleshy disk; style short, thick, conical or cylindrical with subglobose capitate stigma; ovules parietal Male flowers: staminal filaments joined into a tube around the pistillode which is apically expanded into a cap usually fringed with papillae; anthers 10 or ± 30, in 1–2 rows on the staminal tube below the cap; disk 4–6-angled
sex Male
Male flowers: staminal filaments joined into a tube around the pistillode which is apically expanded into a cap usually fringed with papillae; anthers 10 or ± 30, in 1–2 rows on the staminal tube below the cap; disk 4–6-angled
sex Female
Female flowers: ovary half-inferior, surrounded by the fleshy disk; style short, thick, conical or cylindrical with subglobose capitate stigma; ovules parietal
Morphology Reproductive morphology Fruits
Berry globose, surrounded by the persistent bracts and tepals.

Native to:

Angola, Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, California, Cayman Is., Chile Central, Chile North, Colombia, Costa Rica, Gabon, Guatemala, Guyana, Honduras, Iran, Iraq, Jamaica, Malawi, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Nevada, New Mexico, Panamá, Peru, Tanzania, Texas, Turkey, Uruguay, Venezuela, Western Australia, Zambia, Zaïre, Zimbabwe

Pilostyles Guill. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Harley, R.M. [26163], Brazil 55712.000
Stannard, B. [H51762], Brazil 58892.000

First published in Ann. Sci. Nat., Bot., sér. 2, 2: 21 (1834)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

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

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0