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This species is accepted, and its native range is Angola.

[KBu]

Darbyshire, I., Tripp, E.A. & Chase, F.M. (2019). A taxonomic revision of Acanthaceae tribe Barlerieae in Angola and Namibia. Part 1. Kew Bulletin 74: 5. https://doi.org/10.1007/s12225-018-9791-0

Conservation
Barleria fernandae is known only from the type locality, which has not been precisely geolocated but is close to Uia, between Cahama and Xangongo on the main route between Lubango and the Namibian border, following the Caculuvar River valley. The species was recorded as very abundant at this locality but it is clearly highly localised as it has not been collected by other botanists working in this region, such as H. H. W. Pearson. There are numerous settlements and agricultural lands along the main road here, but away from this major transport route, this region is sparsely populated and Google Earth imagery shows extensive areas of apparently intact habitat to the north and south of the road. As we currently have no information on the precise habitat for this species, it must be assessed as Data Deficient — DD but it may prove to be unthreatened despite its range restriction.
Distribution
Endemic to southern Angola (Cunene Prov.).
Ecology
No habitat information was recorded on the type specimen, however the region from where it derived is generally characterised by a semi-arid climate dominated by Colophospermum mopane to mixed mopane-miombo woodland; the type locality is estimated to be at ± 1100 m elevation.
Morphology General Habit
Suffrutex with erect or ascending stems 20 – 50 cm tall from a woody base and rhizome; stems markedly 4-angular, puberulent mainly on two opposite grooves between the ridges, sparsely so elsewhere, nodal line strigose
Morphology General Spines
Axillary spines absent
Morphology Leaves
Leaves ascending, petiole to 6 mm long; blade narrowly oblong-lanceolate, 4.7 – 5.5 × 0.9 – 1.1 cm (l:w ratio: 4.9 – 5.2: 1), base cuneate or attenuate, apex acute or somewhat obtuse, mucronate, margin and midrib beneath sparsely strigulose, elsewhere glabrous; lateral veins 4 – 5 pairs, these and reticulate tertiary veins prominent on both surfaces
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted c. 9 mm from base of corolla tube; filaments 13 – 14 mm long, pubescent for most of length; anthers 3 – 3.5 mm long; lateral staminodes ± 0.7 mm long, pubescent, antherodes 0.9 – 1 mm long
Morphology Reproductive morphology Flowers Calyx
Calyx green, anterior lobe broadly lanceolate, 14 – 18.5 × 6 – 6.5 mm, base rounded, margin involute, apex attenuate, often notched for up to 2 mm, with spinulose tip(s), external surface glabrous, internal surface finely strigulose, venation subparallel, rather prominent externally particularly the central pair of veins; posterior lobe as anterior lobe but 18 – 21.5 × 6.5 – 9 mm; apex more markedly attenuate into spine-tip, midrib most prominent, this sometimes with few strigose hairs; lateral lobes linear-lanceolate, 13.5 – 17 mm long, with short hairs towards apex
Morphology Reproductive morphology Flowers Corolla
Corolla yellow, 33 – 35 mm long, shortly pubescent externally particularly on tube distally; tube cylindrical, 16 – 16.5 mm long; limb subregular; abaxial lobe offset by 1.5 – 2.5 mm, obovate, 14.5 – 15.5 × 9.5 – 10.5 mm, apex rounded; lateral lobes obovate to broadly so, 15 – 17 × 10.5 – 12.5 mm, apices rounded or emarginate; adaxial lobes as lateral lobes but narrower, 9 – 10.5 mm wide
Morphology Reproductive morphology Flowers Gynoecium Pistil
Pistil glabrous; stigma linear, 1.3 – 1.8 mm long.
Morphology Reproductive morphology Inflorescences
Inflorescences axillary, flowers solitary at each axil, subsessile; bracts foliaceous; bracteoles green, oblong-lanceolate or -linear, 13.5 – 21 × 2 – 3 mm, apex spinulose, midrib prominent beneath, this and margin sparsely strigulose
Note
Barleria fernandae is morphologically close to B. kaloxytona but differs in having a subregular corolla limb, the abaxial lobe being only barely offset from the other lobes and similar in size, 14.5 – 15.5 × 9.5 – 10.5 mm (vs corolla in “4+1” configuration, the abaxial lobe being offset by 6.5 – 9.5 mm and markedly smaller than the other lobes, 8 – 13.5 × 3 – 6 mm), by the corolla lobes being rounded or slightly emarginate at the apices (vs usually with acute, attenuate or shortly acuminate apices) and by having larger and proportionately broader outer calyx lobes with involute margins, the posterior lobe 18 – 21.5 × 6.5 – 9 mm in flower (vs lobes without involute margins, posterior lobe 12 – 19 × 3.5 – 6 mm). This species is named in honour of Prof. Fernanda Lages, Head of the Collections at the Instituto Superior de Ciências de Educação, Huíla which includes the LUBA herbarium. Prof. Lages has been very helpful in providing access to the Barleria specimens from this important herbarium and was also a very accommodating host when the second author of this paper visited LUBA together with K. Dexter to study the Petalidium collections in April 2017. It was thanks to Prof. Lages arranging for scanned images of all the unidentified Acanthaceae at LUBA to be sent to the first author that this new species was discovered. This species is clearly closely allied to Barleria kaloxytona and B. coriacea, sharing a similar habit, foliage and inflorescence form. It is particularly similar to B. kaloxytona with which it also shares the largely glabrous vegetative parts and pubescent corolla. However, it differs in the subregular corolla and the larger, proportionately broader calyx outer lobes. This is one of several cases in sect. Prionitis in which there appear to be species pairs that differ primarily in the corolla form — subactinomorphic vs highly zygomorphic. Other examples include B. compacta Malombe & I. Darbysh. and B. brevispina (Fiori) Hedrén in the Horn of Africa, B. subregularis I. Darbysh. and B. ameliae from central and southern Africa, and B. marginata Oliv. and B. linearifolia Rendle from eastern Africa (Darbyshire 2010b; Malombe & Darbyshire 2010).
Type
Angola, Huíla, Humbe, Huia, fl. 9 Dec. 1969, Sousa & Mendonça 38 (holotype LUBA! [LUBA026529-0]).

Native to:

Angola

Barleria fernandae I.Darbysh. appears in other Kew resources:

First published in Kew Bull. 74(1)-5: 79 (2019)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

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Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Bulletin
Kew Bulletin
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Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0