Original Research
Notes on the systematics and nomenclature of Tritonia (Iridaceae: Crocoideae)
Bothalia | Vol 36, No 1 | a332 |
DOI: https://doi.org/10.4102/abc.v36i1.332
| © 2006 P. Goldblatt, J. C. Manning
| This work is licensed under CC Attribution 4.0
Submitted: 19 August 2006 | Published: 20 August 2006
Submitted: 19 August 2006 | Published: 20 August 2006
About the author(s)
P. Goldblatt, B A Krukoff Curator of African Botany. Missouri Botanical Garden., United StatesJ. C. Manning, B A Krukoff Curator of African Botany. Missouri Botanical Garden., United States
Full Text:
PDF (1MB)Abstract
Study of some early types of species now known to belong to the genus Tritonia Ker Gaw l.. a member of Iridaceae. sub
family Crocoideae, comprising some 28 species of southern and south tropical Africa, has shown the need for some nomen-
clatural adjustments. Ixia undulata Burm.f. (1768) is an earlier name for T. crispa (L.f.) Ker Gawl. based on Gladiolus crispus
L.f. (1782) and the combination T. undulata (Burm.f.) Baker must be used for the species, which is native to the western half
of Western Cape, South Africa. The variety T. crispa var. parx iflora is also reduced to synonymy. The type specimen of Ixia
gladiolaris Lam. (1789), currently considered a synonym of Tritonia securigera (Aiton) Ker Gawl.. has flowers that lack the
characteristic tooth-like ridges on the lower tepals of the latter, and corresponds closely to the eastern southern African T.
lineata (Salisb.) Ker Gawl., based on Gladiolus lineatus Salisb. (1796). The new combination T. gladiolaris (Lam.) Goldblatt
& J.C. Manning is made and T. lineata is reduced to synonymy. Montbretia lacerata and Tritonia lacerata. erroneously
regarded as synonyms of T. crispa, are combinations based on Gladiolus laceratus Burm.f., a species that remains unidenti
fied because no type is known and the description is too vague to permit its identification. Lastly, field studies have shown
that the cnsped-leaved T. watermeveri is connected by a series of morphological intermediates to typical T. securigera. which
has straight leaves and identical flowers. The new combination T. securigera subsp. watermeveri (L.Bolus) J.C.Manning &
Goldblatt is proposed for this taxon.
family Crocoideae, comprising some 28 species of southern and south tropical Africa, has shown the need for some nomen-
clatural adjustments. Ixia undulata Burm.f. (1768) is an earlier name for T. crispa (L.f.) Ker Gawl. based on Gladiolus crispus
L.f. (1782) and the combination T. undulata (Burm.f.) Baker must be used for the species, which is native to the western half
of Western Cape, South Africa. The variety T. crispa var. parx iflora is also reduced to synonymy. The type specimen of Ixia
gladiolaris Lam. (1789), currently considered a synonym of Tritonia securigera (Aiton) Ker Gawl.. has flowers that lack the
characteristic tooth-like ridges on the lower tepals of the latter, and corresponds closely to the eastern southern African T.
lineata (Salisb.) Ker Gawl., based on Gladiolus lineatus Salisb. (1796). The new combination T. gladiolaris (Lam.) Goldblatt
& J.C. Manning is made and T. lineata is reduced to synonymy. Montbretia lacerata and Tritonia lacerata. erroneously
regarded as synonyms of T. crispa, are combinations based on Gladiolus laceratus Burm.f., a species that remains unidenti
fied because no type is known and the description is too vague to permit its identification. Lastly, field studies have shown
that the cnsped-leaved T. watermeveri is connected by a series of morphological intermediates to typical T. securigera. which
has straight leaves and identical flowers. The new combination T. securigera subsp. watermeveri (L.Bolus) J.C.Manning &
Goldblatt is proposed for this taxon.
Keywords
Iridaceae; southern Africa; systematics. Tritonia Ker Gawl.. Tritonia crispa (L.f.) Ker Gawl.. Tritonia flava (Aiton) Ker Gawl.; Tritonia securigera subsp. watermeveri (L.Bolus) J.C.Manning & Goldblatt. Tritonia undulata (Burm.f.) Baker
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