TY - JOUR
T1 - A taxonomic revision of the Thesium scirpioides species complex (Subgenus Frisea, Santalaceae) near endemic to South Africa
AU - Lombard, Natasha
AU - le Roux, M. Marianne
AU - van Wyk, Ben Erik
N1 - Publisher Copyright:
© 2020 SAAB
PY - 2021/5
Y1 - 2021/5
N2 - Thesium L. is in need of revision and has been identified as a high priority for taxonomic research in South Africa. As part of an ongoing effort to revise the genus, a group of nine morphologically similar taxa from Subgenus Frisea is revised, including three taxa classified by the IUCN as data deficient due to taxonomic problems and one species new to science (T. atratum N.Lombard & M.M.le Roux). Species of the group, referred to here as the T. scirpioides complex, share the following characters: (1) inconspicuous unarmed herbs or suffrutices, (2) scale-like leaves, (3) indeterminate spike-like inflorescences, (4) post-staminal hairs attaching the anthers to the perianth and (5) twisted placental columns. A comprehensive taxonomic revision of the T. scirpioides complex is presented, including an identification key, updated nomenclature and typifications, descriptions, diagnostic characters, distribution maps and conservation notes. Seven species are recognised and two varieties newly synonymised.
AB - Thesium L. is in need of revision and has been identified as a high priority for taxonomic research in South Africa. As part of an ongoing effort to revise the genus, a group of nine morphologically similar taxa from Subgenus Frisea is revised, including three taxa classified by the IUCN as data deficient due to taxonomic problems and one species new to science (T. atratum N.Lombard & M.M.le Roux). Species of the group, referred to here as the T. scirpioides complex, share the following characters: (1) inconspicuous unarmed herbs or suffrutices, (2) scale-like leaves, (3) indeterminate spike-like inflorescences, (4) post-staminal hairs attaching the anthers to the perianth and (5) twisted placental columns. A comprehensive taxonomic revision of the T. scirpioides complex is presented, including an identification key, updated nomenclature and typifications, descriptions, diagnostic characters, distribution maps and conservation notes. Seven species are recognised and two varieties newly synonymised.
KW - Hemi-parasite
KW - Subgenus Frisea
KW - Thesiaceae
KW - scale-like leaves
KW - systematics
UR - http://www.scopus.com/inward/record.url?scp=85099205510&partnerID=8YFLogxK
U2 - 10.1016/j.sajb.2020.12.005
DO - 10.1016/j.sajb.2020.12.005
M3 - Article
AN - SCOPUS:85099205510
SN - 0254-6299
VL - 138
SP - 193
EP - 208
JO - South African Journal of Botany
JF - South African Journal of Botany
ER -
