Acanthaceae

Pseudocalyx Radlk.

First published in Abh. Naturwiss. Vereine Bremen 8: 416 (1883)

This genus is accepted

The native range of this genus is Gabon to Tanzania and S. Tropical Africa, Madagascar.

Acanthaceae (part 1), Kaj Vollesen, Flora of Tropical East Africa, 2008

Morphology General Habit: Scandent shrubs or woody twiners with stellate indumentum; cystoliths absent.
Morphology Leaves: Leaves opposite, entire or crenate.
Morphology Reproductive morphology Flowers: Flowers solitary or in fascicles merging into terminal pseudoracemes; bracteoles 2, large, bract-like, coriaceous, connate for 2/3 of their length.
Morphology Reproductive morphology Flowers Calyx: Calyx an undulate rim or irregularly lobed or toothed.
Morphology Reproductive morphology Flowers Corolla: Corolla contorted in bud, tube cylindric; limb indistinctly 2-lipped, upper lip 2-fid, lower 3-fid.
Morphology Reproductive morphology Flowers Androecium Stamens: Stamens 4, didynamous, included in tube and inserted near middle, subsessile, sometimes also a staminode present; anthers 2-thecous, hairy or glabrous, thecae oblong-linear, sagittate at base, opening by apical pores.
Morphology Reproductive morphology Flowers Disc: Disc conspicuous, annular, fleshy.
Morphology Reproductive morphology Flowers Gynoecium Ovary: Ovary 2-locular, 2 ovules per locule; stigma 2-lobed.
Morphology Reproductive morphology Fruits: Fruit a woody thick-walled tardily dehiscent 4-seeded capsule without or with a short poorly defined beak; retinacula absent.
Morphology Reproductive morphology Seeds: Seed subglobose with a large scar on one side.
Note: 6 species.
Distribution: Range: The others in Liberia, Gabon (3 species) and Congo.

[FTEA]

J. R. Timberlake, E. S. Martins (2013). Flora Zambesiaca, Vol 8 (5) Acanthaceae Part 1. Royal Botanic Gardens, Kew

Morphology General Habit: Scandent shrubs or woody twiners with stellate indumentum; cystoliths absent
Morphology Leaves: Leaves opposite
Morphology Reproductive morphology Flowers: Flowers solitary or in fascicles merging into terminal pseudo-racemes; bracteoles 2, large, bract-like, coriaceous, connate for 2/3 their length
Morphology Reproductive morphology Flowers Calyx: Calyx an undulate rim, or irregularly lobed or toothed
Morphology Reproductive morphology Flowers Corolla: Corolla contorted in bud, tube cylindric; limb indistinctly 2-lipped, upper lip bifid, lower trifid
Morphology Reproductive morphology Flowers Androecium Stamens: Stamens 4, didynamous, included in tube and inserted near middle, subsessile, sometimes also a staminode present; anthers bithecous, hairy or glabrous, thecae oblong-linear, sagittate at base, opening by apical pores
Disc: Disc conspicuous, annular, fleshy
Morphology Reproductive morphology Flowers Gynoecium Ovary: Ovary bilocular, 2 ovules per locule; stigma bilobed
Morphology Reproductive morphology Fruits: Fruit a woody, thick-walled, tardily dehiscent 4-seeded capsule with or without a short poorly defined beak; retinaculum absent
Morphology Reproductive morphology Seeds: Seeds subglobose with a large scar on one side.
Distribution: A genus of 6 species. One in Liberia, 3 in Gabon, one in Congo and one in SE Africa and Madagascar.

[FZ]

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
- 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
Kew Backbone Distributions
- The International Plant Names Index and World Checklist of Vascular Plants 2025. 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 2025. 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

Descriptions