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This genus is accepted, and its native range is S. Africa.
A specimen from Kew's Herbarium

[KBu]

Kolberg H., van Salgeren M. 2016. A synopsis of Aptosimum and Peliostomum (Scrophulariaceae) in Namibia, including the description of a new species, Aptosimum radiatum, and keys to all accepted species. Kew Bulletin 71:16. DOI 10.1007/S12225-016-9628-7

Morphology General Habit
Perennial, low shrubs
Morphology Leaves
Leaves alternate, crowded or scattered, linear, elongate, elliptical, ovate or obovate, sessile to shortly petiolate, entire, 1-veined, subglabrous, densely or sparsely papillose, finely glandular-tomentose to viscid
Morphology Reproductive morphology Flowers
Flowers solitary in leaf axils, very shortly pedicellate with 2 small bracteoles at base, dark blue to violet
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, didynamous, included, arising in lower part of corolla tube; filaments filiform, one pair longer than other; anthers of equal size, all fertile, dorsifixed, usually ciliate-hispid, rarely glabrous; thecae confluent, dehiscing along a single transverse line
Morphology Reproductive morphology Flowers Calyx
Calyx divided almost to base, 5-lobed, more or less valvate; lobes linear, narrow, acute
Morphology Reproductive morphology Flowers Corolla
Corolla tubular, weakly zygomorphic, 5-lobed, much longer than calyx; tube elongated, narrow below, widening into long throat, mouth wide; lobes about equal, free, rounded, spreading, shorter than tube, posterior pair outside in bud
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary bilocular, narrowly ovoid; ovules many; style filiform, exceeding stamens; stigma small entire, emarginate or very slightly bilobed
Morphology Reproductive morphology Fruits
Capsule thin-walled, longer than calyx, narrowly elongate-ovoid, acute, acuminate or obtusely pointed, somewhat compressed at right angles to septum, bisulcate over septum, septicidally bivalved, opening more or less to base; valves deeply bilobed
Morphology Reproductive morphology Seeds
Seeds numerous, rugose or scrobiculate-tuberculate, cream-coloured to brownish.
Morphology Stem
Stems slender, usually erect, longitudinally striated, glabrous to subglabrous, sometimes viscid, woody at base, sometimes dying-back to base; bark corky at transition to root
Note
No type had thus far been assigned for Peliostomum (Farr & Zijlstra 2014). Bentham (1836) described the genus and five species, P. scoparium, P. leucorrhizum, P. viscosum, P. virgatum and P. origanoides, of which P. scoparium is now considered to belong to Anticharis. He attributed the names to E. Meyer and cited specimens collected by J. F. Drège in South Africa for all of the species. For P. virgatum, he also cited a specimen collected by C. F. Ecklon. P. virgatum is here designated as the type because it is the most recognisable and least variable species of those described by Bentham in 1836.
Type
Type: Peliostomum virgatum E. Mey. ex Benth., here designated — see Notes.

Native to:

Botswana, Cape Provinces, Free State, KwaZulu-Natal, Namibia, Northern Provinces, Swaziland

Peliostomum E.Mey. ex Benth. appears in other Kew resources:

First published in Edwards's Bot. Reg. 22: t. 1882 (1836)

Accepted by

  • Kolberg, H. & van Slageren, M. (2016). A synopsis of Aptosimum and Peliostomum (Scrophulariaceae) in Namibia, including the description of a new species, Aptosimum radiatum, and keys to all accepted species Kew Bulletin 71(16): 1-50. Royal Botanic Gardens, Kew.

Literature

Kew Bulletin

  • (Bentham 1836: sub t. 1882
  • Bentham 1846: 346
  • Hemsley & Skan (1906: 274)
  • Hiern (1904: 132)
  • Merxmüller & Roessler (1967: 37)
  • Smithies 2000: 528.
  • Weber 1907: 80

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
http://creativecommons.org/licenses/by-nc-sa/3.0

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