Achyrospermum micranthum Perkins

Meerts, Pierre, 2022, New identifications of Lamiaceae (Lamioideae and Scutellarioideae) from D. R. Congo, Rwanda and Burundi, Bothalia (a 9) 52 (1), pp. 1-7 : 3

publication ID	https://doi.org/ 10.38201/btha.abc.v52.i1.9
persistent identifier	https://treatment.plazi.org/id/A352084C-7933-FF96-FF12-1D8EFC4C9C3D
treatment provided by	Felipe
scientific name	Achyrospermum micranthum Perkins
status

Treatment

! Achyrospermum micranthum Perkins View in CoL

Distribution: Burundi, D.R. Congo, Rwanda.

Habitat: Rainforests, mountain evergreen forests, bamboo forests, especially near streams; alt. 1700–2800 m.

Discussion: The species was assessed by IUCN as VU ( Gereau et al. 2019), based on 12 collections, while GBIF reports 19 localities. Seven new collections have been identified. Even though the new collections do not significantly change the area of occurrence, they indicate that the species is more widespread than previously thought.

Specimens examined (only newly determined materials): D. R. CONGO: Lacs Edouard et Kivu: Lushasha (Kivu), 02°12’S, 28°47’E, s.d., Babault 722 ( BR) GoogleMaps ; Dondo, territoire Masisi, 01°25’S, 28°42’E, alt. 1750 m, forêt à Neoboutonia , 16 May 1957, Gutzwiller 871 ( BR) GoogleMaps ; Mont Nyamunono, Terr. Kalehe, 02°04’S, 28°55’E, alt. 2000 m, 4 Mar. 1959, Léonard 3290 ( BR) GoogleMaps ; Mt Bugulumiza , ± 02°14’S, 28°41’E, alt. 2350 m, forêt dense à Conopharyngia , etc. sur sol argileux lourd (basalte à olivine), 26 Jul. 1955, Pierlot 663 ( BR) GoogleMaps ; Forêt de la Musisi, 21 km route Kavumu-Walikale, Territoire de Kalehe , 02°17’S, 28°37’E; alt. 2270 m, forêt de montagne à Carapa grandiflora , pente 40°, 10 Jan. 1959, Pierlot 2750 ( BR) GoogleMaps .

RWANDA: Rwanda-Burundi: Forêt de Rugege , vallon Buruli (sous le gîte d’Uwinka, au NW de celui-ci), ± 02°28’S, 29°11’E, alt. 2280 m, vallon boisé encaissé, à Cyathea manniana , 2 Sep. 1974, Lambinon 74/1065 ( BR) GoogleMaps .

BURUNDI: Rwanda-Burundi: Prov. Bubanza, Mugomero (Rugazi), 03°14’S, 29°28’E, alt. 1900 m, sous-bois de forêt de montagne, 01 May 1981, Reekmans 10008 ( BR) GoogleMaps .

Bibliography: Bruce (1936), Robyns (1947), Troupin & Ayobangira (1985), Bloesch et al. (2009).

* Achyrospermum oblongifolium Baker

Distribution: Cabinda ( Angola), Cameroon, Congo, D.R. Congo, Gabon, Ghana, Guinea, Gulf of Guinea Is., Ivory Coast, Liberia, Nigeria, Sierra Leone, Tanzania (one record).

Habitat: Rainforest, secondary forests; alt. 855 m in D. R. Congo, alt. ± 150–900 m elsewhere .

Specimen examined: D. R. CONGO: Forestier Central : Maniema province, Namoya, low- er slopes of Namoya summit, 04°00’59”S ,

27°33’51”E, alt. 855 m, overgrown fallow fields and residual forest patches below secondary rainforest, 13 Apr. 2008, Bytebier 2867 ( BR) .

Discussion: The species is almost exclusively W African, apart from a single isolated record in Tanzania (material not seen). The new record is situated in a region subjected to increasing anthropogenic disturbance and collecting information indeed reports habitat degradation.

Bibliography: Perkins (1921), Bruce (1936), Hepper & Keay (1963), Adam (1975), Morales (2011).