Megalochlamys revoluta (Lindau) Vollesen
subsp. cognata (N.E. Br.) Vollesen

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Synonyms: Ecbolium cognatum N.E. Br.
Ecbolium revoltum (Lindau) C.B. Clarke
Ecbolium schlechteri Lindau
Schwabea revoluta Lindau
Common names:
Status: Native
Shrubby perennial herb, up to 1.25 m tall. Leaves opposite, elliptic to ovate, up to 12 × 5 cm, usually smaller, more or less densely velvety, particularly on the veins and margin; dark sessile glands usually present; margin entire; petiole up to 10 cm long. Inflorescences in spikes, 1-8 cm long. Bracts green, sometimes with purplish veins, ovate with a long sharp apical point and a distinct central vein, often with non glandular hairs, glandular hairs and sometimes with capitate glands. Corolla bright blue; tube 6-13 mm long; lobes 4, 8-14 mm long; lower mid-lobe widest, up to 4.5 mm wide. Capsule 9-14 mm long, finely velvety on the sutures or near the apex.
Derivation of specific name: revoluta: rolled out and under
Flowering time:
Worldwide distribution: Botswana, Mozambique, Zimbabwe and South Africa. (Subsp. revoluta & subsp. nyanzae occur in Kenya and Tanzania).
Botswana distribution: N,SE
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species

Darbyshire, I., Vollesen, K. & Kelbessa, E. (2015). Acanthaceae (Part 2) Flora Zambesiaca 8(6) Pages 243 - 244.

Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 14.

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 19.

Other sources of information about Megalochlamys revoluta subsp. cognata:

Our websites:

Flora of Mozambique: Megalochlamys revoluta subsp. cognata
Flora of Zimbabwe: Megalochlamys revoluta subsp. cognata

External websites:

African Plants: A Photo Guide (Senckenberg): Megalochlamys revoluta
African Plant Database: Megalochlamys revoluta
BHL (Biodiversity Heritage Library): Megalochlamys revoluta
EOL (Encyclopedia of Life): Megalochlamys revoluta
GBIF (Global Biodiversity Information Facility): Megalochlamys revoluta
Google: Web - Images - Scholar
iNaturalist: Megalochlamys revoluta
IPNI (International Plant Names Index): Megalochlamys revoluta
JSTOR Plant Science: Megalochlamys revoluta
Mansfeld World Database of Agricultural and Horticultural Crops: Megalochlamys revoluta
Plants of the World Online: Megalochlamys revoluta
Tropicos: Megalochlamys revoluta
Wikipedia: Megalochlamys revoluta

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2014-24

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2024). Flora of Botswana: Species information: Megalochlamys revoluta subsp. cognata., retrieved 26 May 2024

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