Rotheca luembensis (De Wild.) R.Fern.
subsp. luembensis
var. luembensis

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Rotheca luembensis subsp. luembensis var. luembensis

Photo: Doreen Bolnick

Photo: Nicholas Wightman
Kipemba area, Kalumbila Distr., North-Western Prov.

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Synonyms:	Clerodendrum luembensis subsp. luembensis var. luembensis forma herbaceum (Hiern) R. Fern. Clerodendrum myricoides var. camporum Gürke Clerodendrum myricoides var. savanarum sensu B.Thomas Siphonanthus myricoides var. herbaceus Hiern
Common names:
Frequency:
Status:	Native
Description:	Perennial herb or suffrutex 25–80(100) cm tall, from a long creeping woody rootstock; stems few to many, erect, unbranched or occasionally somewhat branched, usually with a ± dense indumentum of spreading, ± rigid, short hairs; leaves in whorls of 3 or opposite, rarely in whorls of 4, sessile to shortly petiolate; internodes up to 10 cm long; lamina 4–18.5 × 1.2–6 cm, oblong-obovate, oblong-lanceolate, elliptic or obovate-cuneate, up to 5-times longer than wide but more usually 2.5-times longer than wide, widest above the middle, ± long-attenuate towards the base, obtuse to acute or shortly acuminate at the apex, entire to coarsely serrate-dentate in the upper 1/3, ± concolorous, pubescent on both surfaces with hairs similar to those of stems and branches but shorter; inflorescence a terminal, pubescent panicle, 7–23 cm long, formed by opposite 2–5-flowered cymes, sometimes with 2–3 additional cymes in the axils of the uppermost leaves, the uppermost cymes subtended by foliaceous sessile bracts; calyx pale green, red in the upper part when fresh, red-purple on drying, (4)4.5–6 mm long and c. 7 mm in diameter, obconical-campanulate, subglabrous to ± appressed-hairy; lobes 3–4 mm wide at the base, rounded or oblong and obtuse, ciliate; corolla variable in colour, green to greenish-white except for the median bright blue lobe, or pale blue, or pale blue and yellow-green, or white with the lateral lobes light green and the median lobe purple, or 4 lobes pale muddy blue and the median lobe royal-blue, or 4 lobes greenish-mauve and the median lobe violet, or green without and brownish within; corolla tube 5–6 mm long, corolla lobes ciliate; limb of corolla bud 5–6 mm in diameter, subspherical, glabrous or subglabrous to ± densely hairy. forma herbacea differs from forma luembensis in having narrower elliptic to lanceolate leaves widest in the middle with an attenuate base and acute apex and entire or small acute toothed margins.
Notes:	This taxon in Malawi has been further called forma luembensis.
Derivation of specific name:
Habitat:
Altitude range:
Flowering time:	Oct - Nov
Worldwide distribution:	Angola and Zambia
Malawi distribution:	C
Growth form(s):	Shrub under 2 m.
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) Pages 127 - 128. As forma luembensis and forma herbacea

Other sources of information about Rotheca luembensis subsp. luembensis var. luembensis:

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Flora of Mozambique: Rotheca luembensis subsp. luembensis var. luembensis
Flora of Zambia: Rotheca luembensis subsp. luembensis var. luembensis

External websites:

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