Rotheca aurantiaca (Baker) R. Fern.

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Photo: Ton Rulkens
South of Pemba Bay, Metuge district in Cabo Delgado province.

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Synonyms:	Clerodendrum aurantiacum Baker Clerodendrum macrostachyum Baker
Common names:
Frequency:
Status:	Native
Description:	Suffrutex up to 1 m tall with one to several, annual, erect, hollow stems, growing from a woody tuber-shaped rootstock. Leaves opposite, subsessile, spaced along the upper part of the stem and main branches, or numerous and clustered towards the apex of the short lateral branchlets, oblanceolate to oblong-obovate or elliptic, 5–15.5 cm long, sometimes longer, smaller and relatively narrower on the lateral branchlets, long attenuate at the base and decurrent into an apparent winged petiole, sparsely puberulous or hairless; margins crenulate to crenate-serrate in the apical part,or entire. Inflorescences raceme-like or spike-like with dense whorls of 1-6 flowers, 7–26 cm long, mostly terminal on the stem and lateral branchlets, sometimes with two smaller axillary inflorescences in the axils of the uppermost leaves. Calyx 5–7 mm long at anthesis; lobes oblong or semicircular, c. c mm long, not overlapping at the margins. Corolla purple and green, violet or blueish; tube c. 8 mm long and c. 3 mm in diameter, exceeding the calyx; corolla very densely to entirely covered with small orange-brown glands. Stamens erect and arcuate, exserted 12–13 mm. Fruit c. 12 mm long, green, turning black when mature; calyx persistent.
Notes:
Derivation of specific name:
Habitat:	In Brachystegia and mopane woodlands, on clayey sandy soils.
Altitude range:	Up to 900 m
Flowering time:
Worldwide distribution:	Malawi and Mozambique.
Malawi distribution:	S
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters:	Display spot characters for this species
Literature:	Fernandes, R. (2005). Lamiaceae (subfamilies: Viticoideae and Ajugoideae) Flora Zambesiaca 8(7) Page 145. As Rotheca aurantiaca forma aurantiaca and forma faulknerae

Other sources of information about Rotheca aurantiaca:

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Flora of Mozambique: Rotheca aurantiaca

External websites:

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