Herbarium Research

Research associated with the Bolus Herbarium covers a wide spectrum focussed on aspects of the Cape Flora such as endemism, biogeography and systematics and evolution.

Systematic and evolutionary work is current on the following groups: 

  • Asclepiadoideae (Apocynaceae), P.V. Bruyns
  • Bryophytes, T. Hedderson
  • Euphorbiaceae,  P.V. Bruyns
  • Cyperaceae, M. Muasya
  • Lampranthus group (Aizoaceae), C. Klak
  • Psoralea, Otholobium & Aspalathus, C.H. Stirton & M. Muasya
  • Ruschioideae (Aizoaceae), C. Klak
  • Rutaceae, T.H. Trinder-Smith

Contributions from the Bolus Herbarium (THOUGH DISCONTINUED IN 2006, VOLUMES REMAIN AVAILABLE
). Follow this link for available volumes.

Recent publications by permanent - , associated staff and students, relevant to the holdings:


Ah-Peng, C., O. Flores, N. Wilding, J. Bardat, L. Marline, T.A. Hedderson & D. Strasberg. 2014. Diversity and functional richness of subalpine bryophyte communities in an oceanic island (La Réunion).  Arctic, Antarctic and Alpine Research: In Press

Algar-Hedderson, N., L. Soderstrom  & T.A. Hedderson. 2013. Gemmae output in the liverwort Lophozia ventricosa (Dicks.) Dumort: spatial variation, density dependence, and relationships among production components. Journal of Bryology 35: 173-179.

Bauters K., Larridon I., Reynders M., Asselman P., Vrijdaghs A., Muasya A.M., Simpson D.A., & Goetghebeur P. 2014. A new classification for Lipocarpha and Volkiella as infrageneric taxa of Cyperus s.l. (Cypereae, Cyperoideae, Cyperaceae): insights from species tree reconstruction supplemented with morphological and floral developmental data. Phytotaxa 166 (1): 001–032.

Bentley J, Verboom GA, Bergh NG. 2014. Erosive processes after tectonic uplift stimulate vicariant and adaptive speciation: evolution in an Afrotemperate-endemic paper daisy genus. BMC Evolutionary Biology 14: 27.

Bouchenak-Khelladi Y., Muasya A.M. & Linder H.P. 2014. A revised evolutionary history of Poales: origins and diversification. Botanical Journal of the Linnean Society 175: 4–16.

Britton MN, Hedderson TA, Verboom GA. 2014. Topography as a driver of cryptic speciation in the high-elevation sedge Tetraria triangularis (Boeck.) C.B. Clarke (Cyperaceae: Schoeneae). Molecular Phylogenetics and Evolution 77: 96-109.

Browne CM, Milne R, Griffiths C, Bolton JJ, Anderson RJ (2013). Epiphytic seaweeds and invertebrates associated with South African populations of the rocky shore seagrass Thalassodendron leptocaule – a hidden wealth of biodiversity. African Journal of Marine Science 35: 523-531

Browne CM, Maneveldt GW, Bolton JJ, Anderson RJ (2013). Abundance and species composition of non-geniculate coralline red algae epiphytic on the South African populations of the rocky shore seagrass Thalassodendron leptocaule M.C. Duarte, Bandeira & Romeiras. South Afr. Journal of Botany 86: 101-110

Bruyns, P. V., C. Klak & P. Hanacek. 2014. Evolution of the stapeliads (Apocynaceae-Asclepiadoideae) – repeated major radiation across Africa in an Old World group. Molecular Phylogenetics and Evolution 77: 251-263.

Bruyns, P.V., M. Oliveira-Neto, G. F. Melo-de-Pinna2 & C. Klak. 2014. Phylogenetic relationships in the Didiereaceae with special reference to subfamily Portulacarioideae. Taxon 63(5): 1053-1064.

Cardoso, D.B.O.S., C.H. Stirton, & B.M. Torke. 2014. Taxonomy of South American Ormosia (Leguminosae, Papilionoideae): Recircumscription of O. costulata, reinstatement of O. trifoliolata, and the new species O. lewisii from the Brazilian Atlantic Forest. Systematic Botany 39,4: pp. 1132–1141.

Curtis, O.E., Stirton, C.H., & Muasya, A.M. 2013. A conservation and taxonomic assessment of poorly known species rich quartz-silcrete outcrops within Ruens Shale Renosterveld (Overberg, Western Cape) with descriptions of five new species. S. Afr. J. Bot. 87: 99–111.

Dixon RRM, L Mattio, JM Huisman, CE Payri, JJ Bolton, CFD Gurgel. 2014. North meets south – Taxonomic and biogeographic implications of a phylogenetic assessment of Sargassum subgenera Arthrophycus and Bactrophycus (Fucales, Phaeophyceae). Phycologia 53:15-22

Dludlu, M.N., C.H. Stirton, S.A.M. Chimphango, A. Bello, & A.M.Muasya. 2013. Phylogenetic position of the southern African members of the tribe Psoraleeae based on molecular and morphological data. S. Afr. J. Bot. 89: 150–155.

Ellis, L.T. et al., 2014.  New national and regional bryophyte records, 38.  Journal of Bryology 36: 61 – 72. (T.A. Hedderson)

February, E.C., I. Matimati, C.F. Musil & T.A. Hedderson. 2013. Root niche partitioning between shallow rooted succulents in a South African semi desert: Implications for diversity. Plant Ecology: 214: 1181 – 1187.

Gehrke, B. and H. P. Linder. 2014. Species richness, endemism and species composition in the tropical Afroalpine flora. Alpine Botany 124: 165-177.

Hedderson, T.A., D. Gwynne-Evans, C. Ah-Peng & D. Ribeiro. 2014. A Contribution to the Bryoflora of Mozambique from the "Google Forest", Mabu Mountain, Zambezia Province.  Journal of Bryology

Hedderson, T.A., E. Bizuru, M. Mujawamariya & N. Raondry-Rakotoarisoa. 2014. New and additional moss records for Rwanda.  Journal of Bryology 36: 72-75.

Klak, C., Bruyns, P. V. & P. Hanacek. 2013. A phylogenetic hypothesis for the recently diversified Ruschieae (Aizoaceae) in southern Africa. Molecular Phylogenetics and Evolution 69: 1005-1020.

Klak, C. & P. V. Bruyns. 2013. A new infrageneric classification for Mesembryanthemum L. (Aizoaceae: Mesembryanthemoideae). Bothalia 43(2): 197-206.

Klak, C., P. Hanacek & P.V. Bruyns. 2014. Phylogeny and taxonomy for Mesembryanthemum subg. Volkeranthus (Aizoaceae-Mesembryanthemoideae). South African Journal of Botany 95: 112-122.

Klak, C., N.A. Helme & P.V. Bruyns. 2014. Cheiridopsis alba-oculata (Aizoaceae: Ruschioideae, Ruschieae), a new quartz-endemic from southern Namaqualand, South Africa. South African Journal of Botany. In Press.

Larridon I., Bauters K., Reynders M., Huygh W., Muasya A.M., Simpson D.A., & Goetghebeur P. 2013. Towards a new classification of the giant paraphyletic genus Cyperus (Cyperaceae): phylogenetic relationships and generic delimitation in C4 Cyperus. Botanical Journal of the Linnean Society 172: 106–126.

Linder, H. P., Antonelli, A, Humphreys, AM, Pirie, MD, Wuest, RO. 2013. What determines biogeographical ranges? Historical wanderings and ecological constraints in the danthonioid grasses. Journal of Biogeography 40: 821-834.

Linder, H. P. 2014. "The evolution of African plant diversity." Frontiers in Ecology and Evolution 2.

Linder, H. P. and N. P. Barker. 2014. Does polyploidy facilitate long-distance dispersal? Annals of Botany 113(7): 1175-1183.

Linder, H. P., et al. 2014. Phylogeographical Pattern in the Southern African Grass Tenaxia disticha (Poaceae). Systematic Botany 39(2): 428-440.

Linder, H. P., et al. 2014. "Disentangling the influence of climatic and geological changes on species radiations." Journal of Biogeography 41(7): 1313-1325.

Litsios, G., et al. 2014. Effects of a fire response trait on diversification in replicated radiations. Evolution 68(2): 453-465. (H.P. Linder)

Marhold, K. et al. 2013. The Future of Botanical Monography: Report from an international workshop, 1216 March 2012, Smolenice, Slovak Republic. Taxon 62: 4-20. (H.P. Linder)

Mattio L, Zubia M, Loveday B, Crochelet E, Duong N, Payri C, Bhagooli R, Bolton JJ. 2013. Sargassum (Fucales, Phaeophyceae) in Mauritius and Reunion, western Indian Ocean: taxonomic revision and biogeography using hydrodynamic dispersal models. Phycologia 52: 578-594

Melo-de-Pinna, G.F., A.S. Ogura, E.C.P. Arruda & C. Klak. 2014. Repeated evolution of endoscopic peripheral vascular bundles in succulent leaves of Aizoaceae (Caryophyllales). Taxon 63(5): 1037-1052.

Muasya A.M., Viljoen J-A., Dludlu M.N. & Sebsebe Demissew. 2014. Phylogenetic position of Cyperus clandestinus (Cypereae, Cyperaceae) clarified by morphological and molecular evidence. Nordic Journal of Botany 32: 106–114.

Pio, D. V., et al. 2014. Climate change effects on animal and plant phylogenetic diversity in southern Africa. Global Change Biology 20: 1538-1549. (H.P. Linder)

Potts, A.J., T. A. Hedderson, R.M. Cowling, & J.H. Vlok. 2013. Pleistocene range dynamics in the eastern Greater Cape Floristic Region: a case study of the Little Karoo endemic Berkheya cuneata (Asteraceae).  South African Journal of Botany 88: 401-413.

Potts, A.J., T. A. Hedderson & R.M. Cowling. 2013. Testing large-scale conservation corridors designed for patterns and processes: comparative phylogeography of three tree species. Diversity and Distributions 19: 1418-1428.

Potts, A.J., T. Hedderson, J. Franklin & R.M. Cowling. 2013.  The last Glacial Maximum distribution of South African subtropical thicket inferred from community distribution modelling.  Journal of Biogeography 40: 310-322.

Potts, A.J., T.A. Hedderson, & G.W. Grimm. 2014. Constructing phylogenies in the presence of Intra-Individual Site Polymorphisms (2ISPs) with a focus on the nuclear ribosomal cistron.  Systematic Biology 63: 1-16.

Ripley, B. S., Abraham, T., Klak, C. & Cramer, M.D. 2013. How succulent leaves of Aizoaceae avoid mesophyll conductance limitations of photosynthesis and survive drought. Journal of Experimental Botany, doi:10.1093/jxb/ert314

Slingsby JA, Britton MN, Verboom GA. 2014. Ecology limits the diversity of the Cape flora: phylogenetics and diversification of the genus Tetraria. Molecular Phylogenetics and Evolution 72: 61-70.

Stirton, C.H. 2013. The Advance of Legume science continues. J. Kew Guild, No. 118. 16 : 330-334.

Viljoen J-A, Muasya AM, Barrett RL, Bruhl JJ, Gibbs AK, Slingsby JA, Wilson KA, Verboom GA. 2013. Radiation and repeated transoceanic dispersal of Schoeneae (Cyperaceae) through the Southern Hemisphere. American Journal of Botany 100: 2494-2508.

Wilding, N., C. Ah-Peng & T.A. Hedderson. 2013.  Out of obscurity: on the identity of Entosthodon pertenellus (Broth.) Kis. (Funariaceae). Polish Botanical Journal 58:  457-460.

Xing, Y., et al. 2014. "Fossils and a large molecular phylogeny show that the evolution of species richness, generic diversity, and turnover rates are disconnected. Evolution (H.P. Linder)


Klak, C. Aizoaceae. 2013. In: Snijman, D. A. (ed.), Plants of the Greater Cape Floristic Region. 2: the Extra Cape Flora. Pp. 260-309. Strelitzia 30. South African Biodiversity Institute, Pretoria.

Linder, H.P. & Snijman, D.A. Restionaceae. 2013. In: Snijman, D. A. (ed.), Plants of the Greater Cape Floristic Region. 2: the Extra Cape Flora. Pp. 154-156. Strelitzia 30. South African National Biodiversity Institute, Pretoria.

Slingsby, J. A., et al., 2014. In: N. Allsopp, J. F. Colwell and G. A. Verboom (eds). The assembly and function of Cape plant communities in a changing world. Fynbos: Ecology, Evolution, and Conservation of a Megadiverse Region. Pp. 200-223. Oxford University Press, Oxford. (H.P. Linder)

Verboom, G. A., et al. 2014. In: N. Allsopp, J. Colville and G. A. Verboom (eds). Cenozoic assembly of the Greater Cape flora. Fynbos: Ecology, Evolution, and Conservation of a Megadiverse Region. Pp 93-114. Oxford, Oxford University Press: