Coleus leemannii

PLANTAE / PHANEROGAMAE / ANTHOPHYTA / LAMIALES / LAMIACEAE / NEPETOIDEAE / OCIMEAE / COLEUS / LEEMANNII

Coleus leemannii (N.Hahn) A.J.Paton

Indigenous Endemic

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Morphological description

Phanerophyte, single or multi-stemmed shrub up to 2 m tall, usually not exceeding 1.5 m. Seedlings with distinctly succulent roots. Main stem up to 50 mm diam., showing multiple year rings, not ribbed in fresh material; young stems pubescent, pale brown. Bark grey to grey-brown, glabrous. Leaves decussate, rarely ternate; lamina shortly petiolate; petiole (1.1-) 1.9-3.4(-4.0) mm; blade ovate to elliptic to trullate, size of mature leaf, (57-)59-66-(70) x (25-)27-36(-38) mm, upper surface pale green, strigose, lower surface grey, tomentose; main veins 5-8, venation reticulate; margins crenate to dentate, teeth 10-15 per side. Inflorescence a terminal thyrse, 50-100 mm long. Flowers in pedunculate dichasia, 20 mm long; peduncles 2-4 mm; pedicel (3.6-)3.7-4.9(-5.2) mm long. Calyx equally 5-toothed, tubular, 2.2-4.9(-5.2) mm long in flowering stage extending to I x 6 mm in fruiting stage, green, glandular hairy, lobes 5, (1.1-) 1.2-1.4 mm long, tinged purple at apex, at fruiting (4.0-)4.2-5.0(-5.1) mm long. Corolla (6.9-)7.0-9.4 (-9.7) mm long; tube (3.6-)3.7-4.9(-5.2) x 2.9-3.1 mm, white-hairy; upper lobe (1.3-) 1.4-1.9(-2.0) mm, inside tinged purple-pink, outside densely glandular hairy; lower lobe navicular, (3.2-)3.1-4.3(-4.5) mm, white on outside, tinged purple-pink on inside. Stamens antrorse, 5.4-7.5 mm long, attached to tube. Style antrorse, shorter than stamens, 5.4-7.2 mm long, bifid. Fruit a small, brown, rounded nutlet, 0.9 x 0.7 mm. From: Hahn, N; Bredenkamp, GJ. 2007. Lamiaceae: Rabdosiella leemannii, a new species from the Limpopo Province of South Africa. Bothalia 37(1): 37-39. [CC BY] As: Rabdosiella leemannii N.Hahn

Diagnostic description

Rabdosiella leemannii is a distinct species and differs from R. calycina in several features such as its habitat, habit and the vegetative and floral features). It is distinguished by its erect, shrubby nature, woody stems, smaller leaves and flowers. The leaves of R. leemannii are only rarely temate, smaller, narrower (ovate to elliptic or trullate), never becoming broadly ovate as those found in R. calycina. The leaves of R. calycina are often temate. The inflorescences and flowers are also considerably smaller than those of R. calycina. From: Hahn, N; Bredenkamp, GJ. 2007. Lamiaceae: Rabdosiella leemannii, a new species from the Limpopo Province of South Africa. Bothalia 37(1): 37-39. [CC BY] As: Rabdosiella leemannii N.Hahn

Habitat

The habitat consists of Soutpansberg Summit Sourveld and a mosaic of the latter and Soutpansberg Mountain Bushveld. The habitat of R. leemannii is quite sheltered from fire with a maximum period of five years. In the absence of fire, R. leemannii forms single-stemmed shrubs, however, plants exposed to fire do resprout forming multi-stemmed shrubs. Rabdosiells calycina is clearly a herbaceous suffrutex, annually burnt. It is commonly associated with grassland of the eastern escarpment of South Africa occurring as far north as the Soutpansberg. From: Hahn, N; Bredenkamp, GJ. 2007. Lamiaceae: Rabdosiella leemannii, a new species from the Limpopo Province of South Africa. Bothalia 37(1): 37-39. [CC BY] As: Rabdosiella leemannii N.Hahn

Distribution

Endemic to the Soutpansberg and Blouberg Afromontane mist-belt open bushland. From: Hahn, N; Bredenkamp, GJ. 2007. Lamiaceae: Rabdosiella leemannii, a new species from the Limpopo Province of South Africa. Bothalia 37(1): 37-39. [CC BY] As: Rabdosiella leemannii N.Hahn

Occurrence records map

This map contains point-based occurrences at different locations

iNaturalist: BODATSA: Data partners records:

Residence status

Occurrence in the Flora of Southern Africa (FSA) countries and South African provinces. Residence status indicates if a taxon is indigenous, endemic, naturalised or invasive in a specific region. This data is based on specimen records and literature

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