scholarly journals Taxonomic notes on Acanthopsis (Acanthaceae, tribe Acantheae): the group with semi-dense spikes and 5-fid bracts

Phytotaxa ◽  
2017 ◽  
Vol 324 (2) ◽  
pp. 101
Author(s):  
HESTER M. STEYN ◽  
ABRAHAM E. VAN WYK

Acanthopsis is a poorly understood genus taxonomically, confined to arid parts of southern Africa. The density of the inflorescences and the morphology of the bracts are taxonomically useful characters for species delimitation. This contribution focuses on the taxonomy and conservation status of those members in the genus characterized by semi-dense inflorescences with 5-fid bracts, all of which are confined to arid parts of the Northern Cape Province, South Africa. Six species, A. carduifolia, A. glabra, A. glandulopalmata, A. insueta, A. nitida and A. scullyi, are recognized in this group. Three new species, A. glandulopalmata, A. insueta and A. nitida, are described. An identification key to the species of the group with semi-dense spikes and 5-fid bracts is provided.

Bothalia ◽  
2005 ◽  
Vol 35 (1) ◽  
pp. 21-27 ◽  
Author(s):  
D. A. Snijman

Newly described are three species of Strumaria Jacq. subgenus Strumaria. S. prolifera Snijman from the Kourkammaberg in Namaqualand, South Africa, is a rare species closely allied to 5.  barbarae Oberm. S. speciosa Snijman from the Sonberg, southern Namibia and S. luteoloba Snijman from Namuskluft, southern Namibia and the Richtersveld in Northern Cape, South Africa, are rare species closely related to  S. phonolithica Dinter.  S. gigantea D.Mull.-Doblies U.Miill.-Doblies is formally presented as a new synonym of S.  phonolithica. A key to the species in Strumaria subgenus Strumaria is given.


Phytotaxa ◽  
2015 ◽  
Vol 219 (1) ◽  
pp. 1 ◽  
Author(s):  
Hester Maria Steyn ◽  
Abraham E Van Wyk

Acanthopsis is a taxonomically poorly understood genus confined to arid parts of southern Africa. This contribution is the first detailed assessment of the diversity within the Acanthopsis disperma-hoffmannseggiana complex, the latter of which comprises the bulk of the specimens of the genus represented in herbaria. Species concepts are resolved and the misapplication of names is noted. In addition to the recognition of A. disperma and A. hoffmannseggiana, five new species of Acanthopsis formerly treated under these two names, are described, namely A. tuba and A. ludoviciana (both confined to the Richtersveld, Northern Cape, South Africa), A. adamanticola (endemic to southern Namibia), A. villosa (endemic to Bushmanland, Northern Cape) and A. dispermoides (endemic to the Western Cape, South Africa). The names A. disperma and A. hoffmannseggiana are lectotypified here. An identification key to the members of the Acanthopsis disperma-hoffmannseggiana complex is provided, as well as an interim key to the major artificial groupings in the genus, the taxonomy of some which still needs to be resolved.


Bothalia ◽  
2006 ◽  
Vol 36 (2) ◽  
pp. 147-155 ◽  
Author(s):  
G. D. Duncan ◽  
T. J. Edwards

This is the sixth in a series of papers on Lachenalia, towards a revision of the genus. Three new species are described. L. lutea from the southwestern part of the Western Cape, L. cernua from the southern Cape Peninsula and the Worcester Valley of the Western Cape, and L. nardousbergensis from the Bokkeveld Plateau of the Northern Cape, and the Nardousberge and Middelburg Plateaus of the Western Cape.


Bothalia ◽  
2006 ◽  
Vol 36 (2) ◽  
pp. 139-145 ◽  
Author(s):  
J. C. Manning ◽  
P. Goldblatt

Three new species of Iridaceae are described from the Bokkeveld and Roggeveld Escarpments.  Ixia amethystina. a member of section Dichone, is endemic to the edge of the Roggeveld Escarpment. It shares an unusual, inclined spike that is nodding in bud with  I. trifolia but is distinguished by its blackish purple (not yellow) anthers, narrower leaves 1.5-2.0 mm wide, medium-textured corm tunics that form a distinct neck at the base of the stem, and short style branches 2.0-2.5 mm long.Moraea marginata. another Roggeveld endemic, is a member of section Polvanthes and florally similar to M. fistulosa and M. monticola but differs in its linear, channelled leaves 5-7 mm wide, with unusual, thickened margins. Romulea singularis. from the edge of the Kobee River Valley in the Bokkeveld Mountains, is a member of section  Ciliatae. It is unique in the genus in its narrowly funnel-shaped, mauve to purple flowers with slender perianth tube 10-11 mm long, and unusually long filaments, 8-9 mm long, inserted in the lower half of the tube.


Phytotaxa ◽  
2020 ◽  
Vol 440 (3) ◽  
pp. 239-244
Author(s):  
TAMMY LYNN ELLIOTT ◽  
DOUG I. W. EUSTON-BROWN ◽  
A. MUTHAMA MUASYA

Schoenus is a predominately austral genus of sedges in which the Southern African taxa have recently received detailed taxonomic attention, starting with a transfer of 24 species into Schoenus from Tetraria and Epischoenus in 2017. The taxonomy of the Southern African Schoenus species is currently being revised, which has brought insight into the existence of several species new to science. Here, we build on this recent taxonomic work by describing one new species that has been previously overlooked (Schoenus inconspicuus), while including a distribution map, an assessment of conservation status and an updated identification key.


Zootaxa ◽  
2019 ◽  
Vol 4623 (1) ◽  
pp. 61-89
Author(s):  
KYU-TEK PARK ◽  
WILLY DE PRINS

The Lecithoceridae of southern Africa are reviewed, based on material preserved in the Ditsong National Museum of Natural History, Pretoria, Republic of South Africa. A total of 22 species are recognized including three new species: Idiopteryx jansei sp. nov., Lecithocera minyodes sp. nov. and Protolychnis natalensis sp. nov. Isotypa Janse, 1954 syn. nov. is synonymized with Idiopteryx Walsingham, 1891 and Homaloxestis lophophora Janse, 1954 stat. rev. is raised to species rank, separating it from H. cholopis Meyrick, 1906. In addition, Lecithocera ochrometra Meyrick, 1933 is transferred to Torodora Meyrick, 1894 as T. ochrometra (Meyrick, 1933) comb. nov., Lecithocera officialis Meyrick, 1911 is excluded from Lecithocera Herrich-Schäffer, 1853, and Dragmatucha proaula (Meyrick, 1908) is newly reported from Kenya. It is revealed that the male genital figure for Homaloxestis cholopis (Meyrick, 1906) by Janse (1954) was erroneously illustrated, based on a different species which is probably undescribed. Another miss-placed figure of the genitalia by Janse (1954) was also found for Lecithocera aenicta Janse, 1954. Diagnosis, descriptions (only for the new species), depositories of types, and distribution data of all the known species are provided. Images of adults, male and/or female genitalia, and the venation of a few species are illustrated. 


Zootaxa ◽  
2020 ◽  
Vol 4899 (1) ◽  
pp. 186-200
Author(s):  
RUDY JOCQUÉ ◽  
ARNAUD HENRARD

The genus Ranops Jocqué, 1991 was only known from three species so far. Three new species of the genus are described here: R. robinae sp. nov. (♂♀) from South Africa, R. tharinae sp. nov. (♂♀) from Botswana, and R. wandae sp. nov. (♂♀) from Namibia. Its distribution is discussed and a distribution map for all the Ranops species is provided. Ranops expers (O.P. Cambridge, 1876) does not belong to Ranops and is transferred back to Zodarion Walckenaer, 1826. 


Phytotaxa ◽  
2016 ◽  
Vol 244 (2) ◽  
pp. 145 ◽  
Author(s):  
Hester Maria Steyn ◽  
Abraham E Van Wyk

The taxonomy of Acanthopsis is poorly understood, resulting in great difficulties in distinguishing and identifying infrageneric taxa. In this contribution a taxonomic account of the shrublet members of Acanthopsis is provided. Four species are recognized, two of which are newly described, namely A. dregeana and A. erosa (both confined to the Northern Cape Province, South Africa). Acanthopsis trispina, hitherto only known from the orginal collection, is considered a synonym of A. horrida. Acanthopsis spathularis has been recollected after more than 180 years and its status as a distinct species is confirmed. The names A. spathularis and A. horrida are lectotypified here. An identification key to the species of the shrublet group in Acanthopsis is provided.


2010 ◽  
Vol 67 (3) ◽  
pp. 353-398 ◽  
Author(s):  
A. V. Köcke ◽  
S. von Mering ◽  
L. Mucina ◽  
J. W. Kadereit

The Triglochin bulbosa complex (Juncaginaceae) from the Mediterranean region and Africa is revised. One new species, Triglochin buchenaui Köcke, Mering & Kadereit, and two new subspecies, Triglochin bulbosa subsp. calcicola Mering, Köcke & Kadereit and Triglochin bulbosa subsp. quarcicola Mering, Köcke & Kadereit, are described from South Africa. The only two Mediterranean taxa in the complex (Triglochin barrelieri, T. laxiflora) are elevated to species rank. Altogether seven species and four subspecies are recognised: Triglochin barrelieri, T. buchenaui, T. bulbosa subsp. bulbosa, T. bulbosa subsp. calcicola, T. bulbosa subsp. quarcicola, T. bulbosa subsp. tenuifolia, T. compacta, T. elongata, T. laxiflora and T. milnei. An identification key, detailed descriptions and accounts of the ecology and distribution of the taxa are provided. An IUCN conservation status is proposed for each taxon.


Phytotaxa ◽  
2020 ◽  
Vol 474 (1) ◽  
pp. 87-92
Author(s):  
MARIO MARTÍNEZ-AZORÍN ◽  
MANUEL B. CRESPO ◽  
MARÍA ÁNGELES ALONSO-VARGAS ◽  
MICHAEL PINTER

A new species of the southern Africa endemic genus Eliokarmos, that includes the well-known chincherinchees, is described from the vicinity of Kotzesrus, Northern Cape Province of South Africa. Eliokarmos humanii sp. nov. is unique in the genus based on its single, slightly fleshy, suborbicular, convex leaf with ciliate margin, and the short subspiciform inflorescence with almost sessile flowers. A complete description is presented for this species, and data on morphology, ecology, and distribution are reported. In addition, Ornithogalum richtersveldensis, recently described from northwestern South Africa, is transferred to Eliokarmos based on its morphology and biogeography, and a new combination is presented for this species in the latter genus.


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