Published November 23, 2023
| Version v1
Dataset
Open
TABLE 1. Prominent morphological differences between Petalidium ovatum and P in Reinstatement of the name Petalidium ovatum (Acanthaceae), with an amplified description of the species
Authors/Creators
- 1. H. G. W. J. Schweickerdt Herbarium, Department of Plant and Soil Sciences, University of Pretoria, Pretoria, 0002 South Africa. School of GeoSciences, Kings Buildings, University of Edinburgh, Edinburgh EH 9 3 FF, United Kingdom. & wessel @ kaokosafari. com; https: // orcid. org / 0000 - 0002 - 0181 - 3543
- 2. Royal Botanic Garden Edinburgh, 20 a Inverleith Row, Edinburgh EH 3 5 LR, United Kingdom. & kgdexter @ gmail. com; https: // orcid. org / 0000 - 0001 - 9232 - 5221
- 3. loisoriane @ hotmail. fr; https: // orcid. org / 0000 - 0002 - 9852 - 857 X
- 4. H. G. W. J. Schweickerdt Herbarium, Department of Plant and Soil Sciences, University of Pretoria, Pretoria, 0002 South Africa. School of GeoSciences, Kings Buildings, University of Edinburgh, Edinburgh EH 9 3 FF, United Kingdom. & South African National Biodiversity Institute, Private Bag X 101, Pretoria, 0001 South Africa. & braamvanwyk @ gmail. com; https: // orcid. org / 0000 - 0002 - 0437 - 3272
Description
TABLE 1. Prominent morphological differences between Petalidium ovatum and P. englerianum.
| Character | P. ovatum | P. englerianum |
|---|---|---|
| Bark (colour on distal | Younger stems: cream-brown | Younger stems: pale grey |
| stems) | Older stems: brown | Older stems: dark grey or dark grey-brown |
| Indumentum (vegetative | Dense sessile or short-stalked stellate and longer | Dense sessile or short-stalked stellate trichomes |
| parts) | dendritic trichomes; not appearing matted | (rarely few dendritic in addition); appearing matted |
| Leaves | Ovate, rotund or subrotund | Narrowly to broadly elliptic, oblong-elliptic, |
| (lamina shape) | oblanceolate or rarely ovate | |
| Leaves (lamina apex) | Acute, rounded, emarginate or truncate | Acute, rounded or obtuse |
| Leaves (lamina base) | Cuneate, rounded, subcordate or truncate | Attenuate, rarely cuneate |
| Leaves (lamina ratio | 1–1.5:1 | 1.7–3.1:1 |
| length:width) | ||
| Leaves (lamina size) | 10–51 × 6–38 | 12–90 × 7–33 |
| (mm) | ||
| Bracteoles (shape) | Broadly ovate | Variable: ovate, narrowly obovate, oblanceolate, |
| lanceolate or oblong-elliptic | ||
| Bracteoles (size) (mm) | 10–15 × 7–14 | 10.5–17.0 × 3.4–13.5 |
| Corolla (upper lobes) | Connate for 45–50% their length | Connate for ca. 20–40% their length |
| Corolla lobes (colour) | Anterior lobe yellow, dotted burgundy at insertion of | Anterior lobe yellow; other lobes pale yellow or |
| trichomes, burgundy towards margins or burgundy | orange, the latter usually fading to brownish orange | |
| on lateral margins only; other lobes burgundy | in spent flowers | |
| Ovary (indumentum) | Glabrous | Scattered short-stalked glandular trichomes towards |
| apex | ||
| Distribution | Namibia, Kunene Region from Khorixas to Bergsig | Namibia, Kunene Region to the east of Khorixas; |
| in the catchment area of the Huab River (Kaokoveld | Otjozondjupa and Oshikoto Regions and eastwards | |
| Centre of Endemism) | to northwestern Botswana |
Notes
Published as part of Swanepoel, Wessel, Dexter, Kyle G., Loiseau, Oriane & Van Wyk, Abraham E., 2023, Reinstatement of the name Petalidium ovatum (Acanthaceae), with an amplified description of the species, pp. 160 in Phytotaxa 626 (3) on page 160, DOI: 10.11646/phytotaxa.626.3.2, http://zenodo.org/record/10200302
Files
Files
(3.4 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:92d01e996ae59b46f9344c0bf9cd3dfe
|
3.4 kB | Download |
System files
(10.7 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:fad70d0ef2a9ffb58e03cde5c926dde1
|
10.7 kB | Download |