Gaertnera Lam.

Jongkind, Carel Christiaan Hugo, 2015, Description of Gaertnera luteocarpa (Gentianales: Rubiaceae), with two subspecies, a new forest shrub species from Liberia, Ivory Coast and Ghana, European Journal of Taxonomy 126, pp. 1-8 : 2-3

publication ID

https://doi.org/ 10.5852/ejt.2015.126

DOI

https://doi.org/10.5281/zenodo.10467640

persistent identifier

https://treatment.plazi.org/id/B67A780E-FF83-6A3F-FDE3-D3CBFA8CE24B

treatment provided by

Carolina

scientific name

Gaertnera Lam.
status

 

Genus Gaertnera Lam. View in CoL nom. cons.

Key to the species in Upper Guinea (forest area west of Nigeria)

(Largely based on the key in Malcomber & Taylor 2009)

1. Stipules 4-lobed, with several to numerous setae at the apex of the stipule rim, each 0.5–9 mm long .................................................................................................................................................... 2

– Stipules 2 to 4-lobed or without lobes, without setae at apex of the stipule rim ............................... 3

2. Leaves 6–12 × 1.5–3 cm; petiole <1 cm long. Corolla in bud white.................................................. ................................................ G. liberiensis E.M.A.Petit View in CoL (only known from type with flower buds)

– Leaves 18–29 × 5–9 cm; petiole 1.5–3.2 cm long. Corolla in bud red................................................ ................................................................................. G. spicata K.Schum. View in CoL (only known from Gabon)

3. Stipules with ridges or wings not extending below the petioles, the stems merging smoothly into the petiole base or the base encircled by a thin, ciliolate, skirt-like flap ................................................. 4

– Stipules with ridges or wings extending below petiole as a thickened, well-developed wing or flange encircling petiole base ....................................................................................................................... 5

4. Corolla tube 2.5–4 mm long, lobes 1.5–2.5 mm long. Stipules drying chartaceous ........................... ........................................................................................................................... G. paniculata Benth. View in CoL

– Corolla tube 4–6 mm long, lobes 2.5–5 mm long. Stipules drying membranous ............................... .......................................................................... G. longivaginalis (Schweinf. ex Hiern) E.M.A.Petit View in CoL

5. Corolla tube 8–11 mm long, lobes 3.5–6 mm long, the lobes inflated and cucullate at apex, in bud the lobes forming an urceolate cap. Mature drupes violet-black, 5–10 mm long................................ ........................................................................................................... G. cooperi Hutch. & M.B.Moss View in CoL

– Corolla tube 1.8–9 mm long, lobes 0.8–5 mm long, the lobes flattened at apex or with an adaxial hook or flange, in bud the lobes forming a smoothly tapered, acute apex. Mature drupes purplish or yellow ................................................................................................................................................ 6 6. Corolla tube 1.8–3.3 mm long, lobes 1.8–2.7 mm long. Mature drupes violet-black, 5–10 mm long ............................................................................................................................ G. aurea Malcomber View in CoL

– Corolla tube c. 9 mm long, lobes c. 5 mm long. Mature drupes yellow, 18–20 mm long................... ...................................................................................................................... G. luteocarpa View in CoL sp. nov., 7

7. Stipular tube densely pale hairy. Fertile branchlets 4 mm wide (when dry) ....................................... ......................................................................................................... G. luteocarpa subsp. luteocarpa View in CoL

– Stipular tube glabrous. Fertile branchlets 2 mm wide (when dry) ...................................................... ......................................................................................... G. luteocarpa subsp. sinoensis View in CoL subsp. nov.

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