Commiphora omundomba (Burseraceae), a new species from Angola and Namibia Author Swanepoel, Wessel 0000-0002-0181-3543 Independent Researcher, P. O. Box 21168, Windhoek, Namibia & H. G. W. J. Schweickerdt Herbarium, Department of Plant and Soil Sciences, University of Pretoria, Pretoria, 0002 South Africa & wessel @ kaokosafari. com; https: // orcid. org / 0000 - 0002 - 0181 - 3543 wessel@kaokosafari.com Author Weeks, Andrea 0000-0002-0000-4541 Ted R. Bradley Herbarium, Department of Biology, George Mason University, Fairfax, Virginia, 22030, USA & aweeks 3 @ gmu. edu; https: // orcid. org / 0000 - 0002 - 0000 - 4541 aweeks3@gmu.edu Author Van Wyk, Abraham E. 0000-0002-0437-3272 H. G. W. J. Schweickerdt Herbarium, Department of Plant and Soil Sciences, University of Pretoria, Pretoria, 0002 South Africa & National Herbarium, South African National Biodiversity Institute, Private Bag X 101, Pretoria, 0001 South Africa & braamvanwyk @ gmail. com; https: // orcid. org / 0000 - 0002 - 0437 - 3272 braamvanwyk@gmail.com text Phytotaxa 2022 2022-04-20 543 4 207 218 journal article 55865 10.11646/phytotaxa.543.4.1 587dfb57-83bd-48d5-8fc5-a87f3fee06a5 1179-3163 6479377

TABLE 1. Comparative table of the more prominent differences between Commiphora omundomba and C. dinteri.

Character	C. omundomba	C. dinteri
Leaves	Subsessile or petiolate; pale green, not glossy	Petiolate; green to dark green, often somewhat glossy
Lamina shape (terminal leaflets)	Oblanceolate or narrowly obovate	Obovate
Lamina shape (lateral leaflets)	Oblanceolate, narrowly obovate, obovate, elliptic, oblong, or suborbicular	Broadly elliptic or suborbicular
Length of terminal leaflets to width (ratio)	1.9–3.2:1	1.0–2.0:1
Length of terminal leaflets to lateral leaflets (ratio)	1.1–1.4:1	1.5–2.9:1
Leaflet margins	Entire, crenate or crenate-serrate towards apex; up to 8 teeth each side	Crenate-serrate, serrate-dentate or serrate, often dentate at apex; 5–16 and 5–10 teeth each side on terminal and lateral leaflets respectively
Petiole
Shape in t/s	Obcordate or reniform, rarely obovate	Pentagonal, rarely triangular or reniform
Dimensions	0.5–34.0 mm long; 0.5–0.7 × 0.6–0.8 mm in t/s	2–26 mm long; 0.7–0.8 × 0.6–0.7 mm in t/s
Number of vascular bundles	3–5	3–7
Flowers	Sessile	Subsessile
Calyx
Glands	Absent	Present
Number of lobes	3, rarely 4	4
Number of petals	3, rarely 4	4
Disc lobes (male flowers)	3 or 4; distal part adnate to hypanthium, obscurely bifid at apex	4; distal part not adnate to hypanthium, distinctly bifid at apex
Stamens (number)	6, rarely 8	8
Pistil (glands)	Eglandular except for style	Glandular
Stone (angle between locules at apex)	(35–)40–60(–72) degrees	(51–)80–105(–120) degrees
Pseudo-aril (extent of commissural arms)	25–65%	75–95%
Distribution	Southwestern Angola and northwestern Namibia; confined to Kaokoveld Centre of Endemism	Namibia, from the Central Namib Desert eastwards to the Khomas Hochland and southwards to Maltahöhe; absent from Kaokoveld Centre of Endemism