Coleus globosus (Ryding) A. J. Paton

Meerts, Pierre J. & Paton, Alan J., 2024, The genus Coleus (Lamiaceae) in Central Africa (Democratic Republic of the Congo, Rwanda, Burundi), with the description of 15 new species, PhytoKeys 246, pp. 71-178 : 71-178

publication ID	https://doi.org/ 10.3897/phytokeys.246.129476
DOI	https://doi.org/10.5281/zenodo.13629799
persistent identifier	https://treatment.plazi.org/id/BF6DD63F-C758-5AE2-9EB0-5E500FE8EE16
treatment provided by	PhytoKeys by Pensoft
scientific name	Coleus globosus (Ryding) A. J. Paton
status

Treatment

Coleus globosus (Ryding) A. J. Paton View in CoL , Phytokeys 129: 50. 2019 View Cited Treatment .

≡ Plectranthus globosus Ryding View in CoL , Bull. Jard. Bot. Natl. Belg. 66: 101. 1997. Type: DR. Congo, Haut-Katanga, Kundelungu Plateau, 20 Mar 1971, S. Lisowski 23152 (holotype POZG [ POZG-V- 0100131 ], C photo).

Description.

Herb, probably perennial, 0.30–0.40 m high. Stem quadrangular, pubescent, with thin patent hairs and orange sessile glands. Leaves sessile, ascending to erect, narrowly elliptic to narrowly ovate, the lowermost ones broadly elliptic, 3.0–4.0 × 0.6–0.9 cm, apex obtuse to subacute, base narrowly rounded to subcordate at base, sparsely pubescent, with eglandular hairs on lower surface of veins and orange-red sessile glands on both surfaces, margin shallowly crenate to subentire, ± revolute, secondary veins diverging at a very narrow angle and distally subparallel to the margin. Inflorescence unbranched, of 1 or 2 widely spaced subglobose verticils; bracts broadly ovate ca. 6 × 6 mm, apex acuminate, deciduous; cymes 12–20 - flowered; pedicel ca. 1.5 mm long; flower: fruiting calyx only slightly zygomorphic, glandular, pubescent, lobes subequal, ovate-triangular, apex subacute to obtuse, upper lobe slightly decurrent; corolla 12–14 mm long, tube 7–8 mm long, upper lip narrow, 4 - lobed, with narrow lateral lobes, lower lip cucullate, 4–5 mm long, stamens connate over ca. 0.5 mm, anthers ca. 0.5 mm diam., with orange sessile glands. Nutlets ± 1.3 × 1.1 mm, dark brown, smooth, glossy.

Distribution.

Endemic of SE DR. Congo (Haut-Katanga, Kundelungu Plateau).

Habitat and ecology.

Steppic savannah on highlands, on moist soil, riverbanks, often near ponds; 1500–1700 m elev.

Additional specimens.

DR. Congo, Haut-Katanga, Kundelungu, about 5 km NNE of the western source of Lutshipuka, 19 Feb 1969, S. Lisowski, F. Malaisse & J. - J. Symoens 2669 ( POZG); about 6 km WNW of the western source of Lutshipuka, 25 Mar 1969, S. Lisowski, F. Malaisse & J. - J. Symoens 3793 ( POZG); Mont Kabwe, 28 Mar 1971, S. Lisowski, F. Malaisse & J. - J. Symoens 23610 ( POZG).