Sabicea sanguinosa subsp. viridis O. Lachenaud, Zemagho & Sonké, 2020

Lachenaud, Olivier, Zemagho, Lise & Sonké, Bonaventure, 2020, A synopsis of the Sabicea floribunda group (Rubiaceae) from Central Africa, including three new species, Candollea 75 (1), pp. 115-143 : 140

publication ID

https://doi.org/ 10.15553/c2020v751a12

DOI

https://doi.org/10.5281/zenodo.6343152

persistent identifier

https://treatment.plazi.org/id/5F1C9F17-8C0B-4E0C-410E-F49F80725567

treatment provided by

Carolina

scientific name

Sabicea sanguinosa subsp. viridis O. Lachenaud, Zemagho & Sonké
status

subsp. nov.

7b. Sabicea sanguinosa subsp. viridis O. Lachenaud, Zemagho & Sonké , subsp. nov.

( Fig. 12F View Fig , 13A–B View Fig ).

Holotypus: GABON. Ogooué-Maritime: région du Lac Alombié, ± 7 km au N de Mpaga, 0°50'20"S, 9°27'14"E, 14.X.2014, fl. & fr., Lachenaud, Ikabanga & Lafferty 1918 ( BRLU!; GoogleMaps isotype: BR!, G!, LBV!, MO!, P!, WAG!) .

A typo differt calycis bracteisque pallide viridibus, nec atrorubris.

Distribution, ecology and phenology. – This subspecies is endemic to the lower Ogooué delta in Gabon, between the coast and Lake Alombié ( Fig. 10 View Fig ); it has thus a more southern range than subsp. sanguinosa . It occurs in the same habitat as the latter, and is locally very abundant.

Flowers recorded in October-November, fruits in October (probably in other months as well).

Conservation status. – The extent of occurrence ( EOO) of S. sanguinosa subsp. viridis is estimated to be 483 km ², and its area of occupancy ( AOO) to be 16 km ², both values being within the limit for “Endangered” status under subcriteria B 1 and B 2. The taxon is endemic to the Ogooué delta in Gabon, and is known from five specimens, representing four subpopulations. It is not known from any protected area, but probably occurs in the Wonga-Wongué Presidential Reserve since it has been collected very close to its limits. In spite of its restricted range, it occurs in a sparsely populated area, and is a locally abundant plant of forest edge habitats, which benefits from small-scale forest clearing (e.g. that induced by selective logging). As a result, there is no evidence of a particular threat, and the taxon is assessed as “Least Concern” [LC] using the IUCN Red List Categories and Criteria ( IUCN, 2012).

Paratypi. – GABON. Ogooué-Maritime : Préfecture de M’paga , à env. 7 km au N du lac Alombié, au S de la réserve de Wonga Wongué , 11.X.2014, fl. & fr., Bidault et al. 1691 ( BR, BRLU, MO, P); delta de l’Ogooué en face de Port-Gentil , au S de la Pointe Fétiche , 22.XI.2016, fl., Lachenaud et al. 2270 ( BR, BRLU, G, K, LBV, MO, P, WAG); env. 5 km au SE de Mbilapé, 24.XI.2016, fl., Lachenaud et al. 2314 ( BR, BRLU, G, LBV, MO, P, WAG); riv. de Kendié en aval de Mbilapé , rive E , 25.XI.2016, fl., Lachenaud et al. 2335 ( BR, BRLU, LBV, MO, WAG).

LBV

LBV

WAG

WAG

BRLU

Université Libre de Bruxelles

BR

Embrapa Agrobiology Diazothrophic Microbial Culture Collection

G

Conservatoire et Jardin botaniques de la Ville de Genève

LBV

CENAREST

MO

Missouri Botanical Garden

P

Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants

WAG

Wageningen University

A

Harvard University - Arnold Arboretum

B

Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet

K

Royal Botanic Gardens

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Gentianales

Family

Rubiaceae

Genus

Sabicea