bluuebunny/crossref_metadata_2025_split huggingface dataset:
The <i>Indigofera filifolia</i> complex (Fabaceae) in southern Africa
Authors: Jarvie J. K. , Stirton C. H. 
Published: July 2015

The Indigofera filifolia Thunb. complex, previously known as a widespread polymorphic species, is segregated into three species. I . filifolia is retained as a variable species and two allied species, I. gifbergensis C. H. Stirton J. K. Jarvie and I. ionii J. K. Jarvie C. H. Stirton are described as new.
Studies in the Ericoideae (Ericaceae). Y. The genus <i>Coilostigma</i>
Authors: Oliver E. G. H. 
Published: July 2015

A revision of the genus Coilostigma Klotzsch is presented which recognizes only two species, C. zeyherianurn Klotzsch and C. glabrum Benth. The genus belongs to the Ericaceae — Ericoideae and is endemic in the southern and eastern Cape Province. Fundamental differences in the ovary complement have necessitated the recognition of two subgenera, Coilostigma and Anomalosepala E. G. H. Oliver. Aspects covered include history, morphology, phytogeography, pollination biology and taxonomy.
Leaf anatomy of the genus <i>Ehrharta</i> (Poaceae) in southern Africa: the Villosa group
Authors: Ellis R. P. 
Published: July 2015

The leaf blade anatomy of Ehrharta villosa Schult. f. var. villosa, var. maxima Stapf and E. thunbergii Gibbs Russell is described and illustrated. These three taxa, constituting the Villosa species group, share a diagnostic leaf anatomy distinguished by the absence of a distinct midrib, adaxial semi-radiate mesophyll with the abaxial chloren- chyma palisade-like in arrangement, rectangular long cells and the stomatal apertures which are overlapped by four cuticular flanges projecting from the two adjacent interstomatal cells. These combined attributes characterize this species group, and the stomatal flanges are unique to this group in the genus Ehrharta Thunb. Microhairs are absent in E. villosa but are present in E. thunbergii which also possesses abaxial prickles and plentiful, rounded silica bodies not associated with cork cells as in E. villosa. These two taxa can. therefore, be separated anatomically. Nevertheless, they share many features and are undoubtedly closely related and their classification in the same species group is substantiated by the anatomical evidence presented in this paper.
Studies in the genus <i>Lotononis</i> (Crotalarieae, Fabaceae). 1. Three new species of the section <i>Aulacinthus</i> from the Cape Province
Authors: Van Wyk B-E. 
Published: July 2015

Three new species of the section Aulacinthus (E. Mey.) Benth. of Lotononis (DC.) Eckl. Zeyh. are described: L. comptonii B-E. van Wyk. L. dahlgrenii B-E. van Wyk and L. dissitinodis B-E. van Wyk. These species are related to L. gracilis (E. Mey.) Benth. and L. rigida (E. Mey.) Benth. and are all endemic to marginal fynbos areas of the south-western Cape. The section now comprises seven species.
<i>Solanum</i> (Solanaceae) in Ghana
Authors: Bukenya Z. R. , Hall J. B. 
Published: July 2015

Of the 22 species, subspecies and varieties in the genus Solanum L. (Solanaceae) that occur in Ghana, about 15 are indigenous. In Ghana serveral members of the genus are utilized as food crops while others are put to medicinal and ornamental use. Up-to-date and detailed descriptions for all the Solanum taxa occurring in Ghana and a key to the species are provided.
Arnell, Marchantiales, Riccia albolimbata, R. albosquamata, white scales
Authors: Perold S. M. 
Published: July 2015

Arnell s (1957. 1963) inadequate descriptions, poor drawings, mistakes in the text and key. as well as mixed collections, have all contributed to the confusion regarding the identity of his species R albolimbata and R albosquamata. Volk s collections (Arnell 1957) of the latter consist mostly of two white-scaled species in the same packet: one is R. albolimbata and the other is R argenteohmbata Volk Perold (Volk et al. 1988). Evidently Amell used characters of both plants to describe R. albosquamata. although the type specimen. Volk 452. consists of only R albolimbata (plus fragments of R atropurpurea Sim and R. trichocarpa Howe). R albosquamata is accordingly to be regarded as a taxonomic synonym of R albolimbata.
Studies in the southern African species of <i>Justicia</i> and <i>Siphonoglossa</i> (Acanthaceae): palynology
Authors: Immelman K. L. 
Published: July 2015

The gross morphology of the pollen of all southern African species and subspecies of Justicia and Siphonoglossa was investigated, as well as that of eight tropical African species of Justicia. The following pollen types were found in the southern African species of Justicia: two- or three-colporate, each with the margocolpus either entire or broken up into areolae, and two-porate areolate pollen. One tropical African species had the colpus very short, and in another tropical African species it was replaced by an extra row of areolae. All Siphonoglossa species had two-colporate pollen with areolae and long colpi. The southern African species of Justicia could be separated from Siphonoglossa on pollen characters, and some sections of Justicia could also be distinguished on the same basis.
Studies in the genus <i>Riccia</i> (Marchantiales) from southern Africa. 13. A new species, <i>R. hantamensis</i>, in section <i>Pilifer</i> and a new record for R- alatospora
Authors: Perold S. M. 
Published: July 2015

Riccia hantamensis, a new species from the Hantams Mountain, District Calvinia, is described. It is clearly related to R. alatospora, but is a much larger plant. Like other species with a dorsal epithelium of free-standing cell pillars, it belongs to section Pilifer Volk. R. alatospora, originally only known from Platklip, Stellenbosch (Volk Perold 1985), is now also recorded from Carolusberg, Hester Malan Reserve, Namaqualand.
Invasive alien woody plants of Natal and the north-eastern Orange Free State
Authors: Henderson L. 
Published: July 2015

The frequency and abundance of invasive alien woody plants were recorded along roadsides and at watercourse crossings in 87% (152/175) of the quarter degree squares in the study area. The survey yielded BO species of which the most prominent species (in order of prominence) in roadside and veld habitats were: Chromolaena odoruta, Solatium mauritianum, Psidium guajava, Rubus spp., Acacia meamsu and Lantana camara The most prominent species (in order of prominence) in streambank habitats were: Acacia dealbata, A. meamsii and Salix babylonica.The greatest intensity of invasion was recorded in the Natal midlands and in the coastal belt of southern Natal, including the metropolitan areas of Pietermaritzburg and Durban. There was relatively little invasion in the north-eastern lowlands of Natal but the potential for expansion is great. Little invasion was recorded in the north-eastern Orange Free State except along some watercourses.
Studies in the genus <i>Riccia</i> (Marchantiales) from southern Africa. 15. <i>R. hirsuta</i> and <i>R. tomentosa</i>, sp. nov., two distinct species previously treated as one
Authors: Volk O. H. , Perold S. M. 
Published: July 2015

The description of Riccia hirsuta (Volk Perold 1986) is emended and new illustrations of the species are provided, as the original description and illustrations were based on two distinct, but rather similar species. Examination of newly collected material of R. hirsuta, showed it to belong to subgenus Riccia, section Pilifer (Volk 1983). Section Micantes (Volk Perold 1986) of which this was the type species, is therefore transferred to section Pilifer. R. tomentosa Volk Perold, sp. nov., described here, is at first glance somewhat similar to R. hirsuta in its habit, hence the earlier confusion in Volk Perold (1986). It also resembles R. hirsuta in its dorsal covering of long hairs and in the triangular scales apically split into cellular strands. R. tomentosa, however, differs from R. hirsuta in the spongy (not compact) construction of the thallus and in the spores permanently united in tetrads (not single). It belongs to subgenus Thallocarpus and is the type species of the new section Pannosae.
Studies in the southern African species of <i>Justicia</i> and <i>Siphonoglossa</i> (Acanthaceae): indumentum
Authors: Immelman K. 
Published: July 2015

The trichome types present on all species of Justicia and Siphonoglossa in the southern African region (as defined by the Flora of southern Africa) were examined with the dissecting and with the Scanning Electron Microscope. Both glandular and eglandular trichomes were observed, the former comprising both sessile, peltate glands and stalked glands of various lengths. Eglandular trichomes are either straight or sharply bent (anvil-shaped), and comprise two to many cells. They are either smooth or have raised ornamentation on the cell walls. The presence and morphology of the trichomes on various organs is recorded and measured, and the range of trichomes seen was illustrated. The possible significance of trichome type and ornamentation in the taxonomy and ecology of the genera is discussed.
Invasive alien woody plants of the Orange Free State
Authors: Henderson L. 
Published: July 2015

The frequency and abundance of invasive alien woody plants were recorded along roadsides and at watercourse crossings in 66% (151/230) of the quarter degree squares in the study area. The survey yielded 64 species of which the most prominent (in order of prominence) in streambank habitats were: Salix babylonica, Populus x canescens, Acacia dealbata and Salix fragilis (fide R.D. Meikle pers. comm ). The most prominent species (in order of prominence) in roadside and veld habitats were: Opunlia ficus-indica, Prunus persica, Eucalyptus spp.. Rosa eglanteria, Pyracantha angustifolia and Acacia dealbata.Little invasion was recorded for most of the province. The greatest intensity of invasion was recorded along the perennial rivers and rocky hillsides in the moist grassland of the eastern mountain region bordering on Lesotho and Natal.
Studies in the genus Riccia (Marchantiales) from southern Africa. 23. <i>R. bullosa</i>: typification and a full description
Authors: Perold S. M. 
Published: July 2015

In the protologue of Riccia bullosa, Lindenberg (1829) based his vague and incomplete description of the taxon on two heterogeneous elements: a specimen from Portugal and one from the Cape. Stephani (1898) retained the name Riccia bullosa for the Cape element and referred the Portuguese plant to Exormotheca welwitschii (Stephani 1899). Although generally accepted until 1940. K. Muller (1940) rejected Stephani's segregation and referred the Portuguese element to his new combination. Exormotheca bullosa (Link) K. Muller, based on the false assumptions that Stephani had failed to recognize that the Portuguese plant was an Exormotheca. and that the Cape plant was insufficiently known and had not been found again. Counter arguments are set out here, urging a return to Stephani’s earlier segregation. A lectotvpe for Riccia bullosa is selected, which results in the repudiation of Müller's (and Grolle's) lectotypification of Exormotheca bullosa (=Riccia bullosa).
Notes on the Strumariinae (Amaryllidaceae-Amaryllideae). Six new taxa in <i>Strumaria</i> and <i>Hessea</i> from the central and northwestern Cape, South Africa, and southern Namibia
Authors: Snijman D. J. 
Published: July 2015

Newly described are four species and a subspecies of Strumaria and one species of Hessea. S. aestivalis Snijman from the Langberg and S. perryae Snijman from the Bokkeveld escarpment are rare species closely allied to S. pubescens W.F. Barker. S. discifera Marloth ex Snijman is widespread on the Bokkeveld and Roggeveld escarpments but S. discifera subsp. bulbifera Snijman which comprises several clonal populations, is narrowly restricted to the dolerite ridges near Nieuwoudtville. S. villosa Snijman, a rare species, is localised on quartz hills near Kosies in the Richtersveld. H. speciosa Snijman occurs in red sand and friable loam from southern Namibia to the central Cape.
Salt glands in flowering culms of <i>Eriochloa</i> species (Poaceae)
Authors: Arriaga M. O. 
Published: July 2015

Salt glands were found in Eriochloa (Paniceae-Poaceae): E. monte\idensis, E. pseudoacrotricha and E. punctata. They occur on the culms, rachises and secondary ramifications of the inflorescence. The glands are bicellular structures with endodermal tissue at the base. They consist of a basal cell and an apical cell, which is a collecting chamber with a large pore at the top. It is proposed to conserve the term salt gland to designate excretory structures associated with endodermal collecting tissue. The elements present in the glands (detected by the use of X-ray micro-analysis) are: Na. Mg. P. S. Cl. K with an increase of the elements from the endodermal tissue to the cap cell. Because of energy needed to transport and excrete salts, salt glands are situated at the base of the inflorescence, which is the zone of maximal development of Kranz structure. It is inferred that Eriochloa is a facultative halophytic genus, derived recently from a halophytic ancestor.
Invasive alien woody plants of the eastern Cape
Authors: Henderson L. 
Published: July 2015

The frequency and abundance of invasive alien woody plants were recorded along roadsides and at watercourse crossings in 69.9% (151/216) of the quarter degree squares in the study area. The survey yielded 101 species of which the most prominent (in order of prominence) in roadside and veld habitats were: Opuntia ficus-indica, Acacia meamsii and A. cyclops. The most prominent species (in order of prominence) in streambank habitats were: A. meamsii, Populus x canescens, Salix babylonica and S. fragilis (fide R.D. Meikle).The greatest intensity of invasion was recorded in the wetter eastern parts and particularly in the vicinity of Port Elizabeth. Uitenhage, East London, Grahamstown, Hogsback and Stutterheim. There was relatively little invasion in the central and western dry interior except along watercourses.
New combinations and resurrected names in <i>Microcharis</i> and <i>Indigastrum</i> (Fabaceae—Papilionoideae)
Authors: Schrire B. D. 
Published: July 2015

As a result of cladistic studies in the tribe Indigofereae in Africa and Madagascar (Schrire 1991) evidence was accumulated to justify resurrecting the genera Microcharis Benth. and Indigastrum Jaub. Spach, which were previously considered part of Indigofera L. All described species in each genus are listed alphabetically. Forty-seven new combinations, six changes ain rank and four resurrected names are published.
Systematic studies in the genus <i>Mohria</i> (Anemiaceae: Pteridophyta). III. Comparative sporangium and spore morphology
Authors: Roux J. P. 
Published: July 2015

The genera Mohria and Anemia (Anemiaceae: Pteridophyta) can be separated on both their sporangia and spores. In Mohria the capsule is globose with an apical annulus but in Anemia it is ovate-globose to cylindrical with a subapical annulus. The spores of both genera are radially symmetrical, tetrahedral and trilete with near parallel muri. The exinal sculpture in Mohria is cicatricose and in Anemia it can be canaliculate or cicatricose. In both genera the mural sets anastomose to form common muri that extend from near the distal pole to the equatorial radial region. The muri in Mohria are hollow and differ from those in Anemia which are solid or microporate. Supramural sculpturing in Mohria and Anemia is perinous. Spores of the other schizaealean ferns show no or little taxonomic affinities with Mohria and Anemia. In Actinostachys and Schizaea the spores are monolete and in Lygodium trilete but the exinal sculpture is smooth.
Synopsis of the genus <i>Disparago</i> (Asteraceae)
Authors: Koekemoer M. 
Published: July 2015

The genus Disparago comprises nine very distinct species and is here divided into four new. well-defined sections: Monticapra Koekemoer, comprising three recently described species, Disparago gongylodes Koekemoer, D. barbata Koekemoer. D. pilosa Koekemoer: section Laevicarpa Koekemoer (D. kolbei) and section Uniflos Koekemoer (D. tortilis) which are both monotypic, and section Disparago which has four species (D. ericoides. D. anomala. D. kraussii, D. laxifolia). The previous revision (Levyns 1936a) included seven species of which six are retained. A key to the sections and the species and a diagrammatic key are given as well as diagnostic descriptions, synonyms, typification and notes on the distribution and habitat of each species.
Studies in the Marchantiales (Hepaticae) from southern Africa. 3. The genus <i>Targionia</i> and <i>T. hypophylla</i> with notes on <i>T. lorbeeriana</i> and <i>Cyathodium</i> <i>foetidissimum</i> (Targioniaceae)
Authors: Perold S. M. 
Published: July 2015

A taxonomic account of the genus, Targionia. and its only representative in southern Africa, the almost cosmopolitan T. hypophylla, is given here. Much more southern African and other material, than was available to the previous authors. Sim (1926) and Amell (1963) has been examined. Material collected at Knysna by Duthie was identified by Amell (1963) as Cyathodium foetidissimum. but is shown to have been misidentified and is actually a specimen of Riccia rubricollis. The presence of the genus, Cyathodium in southern Africa, has not been confirmed.
The hepatic, Jensenia sprnosa (= PaUavicinia stephanii: Pallaviciniaceae), in southern Africa
Authors: Perold S. M. 
Published: July 2015

Recently, specimens of Jensenia spinosa (= PaUavicinia stephanii) were collected at the type locality ‘Spitskop. bei Lydenburg , in the Transvaal. The type, which previously was the only specimen from southern Africa, is held” at G. A detailed description of J. spinosa. illustrated with photographs of the thalli and spores is presented here, since earlier descriptions are sketchy and lack illustrations.
Embryo sac development in some representatives of the tribe Cynodonteae (Poaceae)
Authors: Strydom A. , Spies J. J. 
Published: July 2015

Chloris virgata Sw., Cynodon dactylon (L.) Pers., Harpochloa falx (L. f.) Kuntze, and Tragus berteronianus Schult. have a Polygonum type of embryo sac development. Unreduced embryo sacs were found in Eustachys paspaloides (Vahl) Lanza Mattei, Harpochloa falx, and Rendlia altera (Rendle) Chiov. Both facultative and obligate apomixis were observed. The Hieracium type of embryo sac development was observed in the aposporic specimens.
Studies in the liverwort genus <i>Fossombronia</i> (Metzgeriales) from southern Africa. 3. An amendment to <i>F. spinifolia</i>
Authors: Perold S. M. 
Published: July 2015

Fossombronia spinifolia was described by Stephani (1900) from a specimen collected by Breutel at Genadendal (Gnadenthal) during his visit to the Cape, which lasted from November 1853 to April 1854 (Gunn Codd 1981). This species was not adequately described and illustrated by Stephani or by subsequent workers. Moreover, Scott Pike (1987) misapplied the epithet, F. spinifolia, to specimens Amell had identified as F. leucoxantha, because they (Scott Pike 1988) overlooked a capsule with ripe spores in the type specimen. An attempt is hereby made to describe and illustrate this species in greater detail in order to prevent more confusion in future.
Two new species of <i>Zygophyllum</i> (Zygophyllaceae) from the Western Cape, South Africa
Authors: Van Zyl L. 
Published: July 2015

Two new species of Zygophyllum L. from the Western Cape are described, namely, Z. fuscatum Van Zyl from the coastline between Betty’s Bay and De Hoop Nature Reserve and Z botulifolium Van Zyl from the Tanqua Karoo.
Cytogenetic studies in the genus <i>Pentaschistis</i> (Poaceae: Arundinoideae)
Authors: Klopper K. C. , Spies J. J. 
Published: July 2015

Cytogenetic studies of 45 specimens, representing 16 taxa of the genus Pentaschistis (Nees) Spach confirmed two basic chromosome numbers (x = 7, 13) for the genus. Chromosome numbers for five species and one subspecies are described for the first time, i.e. P. aimides subsp. jugorum (n = 2x = 14). P. colorata (n = 2x = 14). P densifolia (n = x = 7), P. linui (n = 6x = ± 42), P. rigidissima (n = x = 7, n = 3x = 21) and P viscidula (n = 3x = 21). Polyploidy occurs frequently and new ploidy levels are described m four of the species, namely P airoides (Nees) Stapf subsp. airoides (n = 3x = 21), P. cir- rhulosa (Thunb.) McClean (n = x = 7), P. eriostoma (Nees) Stapf (n = 3x = 39+0-4B) and P rupestris (n = 4x = 28) The majority of species form young polyploid complexes. There seems to be no correlation between cytogenetic data and mor­phological groupings within Pentaschistis.
Revision of the genus <i>Calpurnia</i> (Sophoreae: Leguminosae)
Authors: Beaumont A. J. , Beckett R. P. , Edwards T. J. , Stiron C. H. 
Published: July 2015

Taxa recognised in this revision are: Calpurnia aurea (Aiton) Benth. subsp. aurea; C. aurea (Aiton) Benth. subsp. indica Brummitt; C. floribunda Harv ; C. glabrata Brummitt; C. intrusa (R.Br in W.T.Aiton) E.Mey.; C. reflexus A.J.Beaumont sp nov.; C. sericea Harv. and C. woodii Schinz. A putative hybrid between C. sericea and C. woodii is recorded. With the exception of C aurea, all species are restricted to southern Africa. C. reflexus is possibly extinct, and C. woodii is considered rare. Characters examined in this revision are habitat, habit, vestiture, leaf morphology and anatomy; floral, pollen, fruit and seed morphology and anatomy; and seedling morphology. Illustrations and a key to taxa are provided.
Revision of the genus <i>Faucaria</i> (Ruschioideae: Aizoaceae) in South Africa
Authors: Groen L. E. , Van der Maesen L. J. G. 
Published: July 2015

Faucaria Schwantes is a small genus of succulents, concentrated in south-central Eastern Cape. Distinguishing features of Faucaria are the characteristically dotted and toothed leaves and the structure of the seed capsule. A taxonomic review of the genus is presented, including relationship, diagnostic features, variation, distribution and ecology. The revision reduces the number of species from 33 to six: F. bosschearui. F.felirui, F. gratiae, F. nemorosa, F. subintegra. and F. tigrina. Two new subspecitic combinations, F. felirtu subsp britteniae and F. felina subsp tuberculosa have been made. A cladogram is included. A key to the taxa is provided and each species is described and illustrated.
The genus <i>Amphiglossa</i> (Gnaphalieae, Relhaniinae, Asteraceae) in southern Africa
Authors: Koekemoer M. 
Published: July 2015

It is proposed that the generic concept of Amphiglossa DC. be broadened to include the genus Pterothrix DC. The two gen­era were previously separated on the presence or absence of ray florets. A thorough study of various characters showed that the type of florets was overemphasised in the past and that the pappus and cypselas provide sufficient evidence to unite the two genera The genus consists of 11 species of which Amphiglossa celans Koekemoer. A. grisea Koekemoer, A. rudolphii Koekemoer and A. susannae Koekemoer are newly described A key to the species as well as detailed descriptions and distribution maps are provided. Photographs are included for each species and key characters for the genus are also illustrated.
Studies in the liverwort genus Fossombronia (Metzgeriales) from southern Africa. 10. Three new species from Northern and Western Cape
Authors: Perold S. M. 
Published: July 2015

Three new species of Fossombronia from the winter rainfall area of the Northern and Western Cape are described: F. hyalorhiza, which has colourless rhizoids and is fairly widespread, but not common; F marindae, which has purple rhi­zoids, very attractive, highly ornamented spores and is so far known from a single locality only and F. monticola. which also has purple rhizoids, with spores irregularly ridged, often partly areolate, and is quite common but fairly variable.