Sebaea Explained

Sebaea is a genus of annual plants in the family Gentianaceae.^[1] Species occur in Africa, Madagascar, India, China, Thailand, Australia and New Zealand.^[2] The genus was paraphyletic and has been split in four genera: Exochaenium, Klackenbergia, Lagenias and Sebaea s.str..^{[3] [4]} Synapomorphies for Sebaea s.str. include the presence of extra stigma along the style^[5] (called diplostigmaty^{[6] [7]}) and the shape of the testa cells of the seeds.^[1]

The name honors Albertus Seba (1665–1736), a Dutch pharmacist, zoologist and collector.

Species include (non exhaustive list):

• Sebaea albens (L. f.) Roem. & Schult.
• Sebaea albidiflora F.Muell. - white sebaea^[8]
• Sebaea ambigua Cham.
• Sebaea amicorum I.M. Oliv. & Beyers^[9]
• Sebaea aurea (L. f.) Roem. & Schult.
• Sebaea bojeri Griseb.
• Sebaea brachyphylla Griseb.
• Sebaea capitata Cham. & Schlechtdl.
  • var. capitata Cham. & Schlechtdl.
  • var. sclerosepala (Schinz) Marais
• Sebaea chironioides Gilg
• Sebaea elongata E. Mey.
• Sebaea erosa Schinz
• Sebaea exacoides (L.) Schinz
• Sebaea exigua (Oliv.) Schinz
• Sebaea filiformis Schinz
• Sebaea fourcadei Marais
• Sebaea grisebachiana Schinz
• Sebaea hymenosepala Gilg
• Sebaea junodii Schinz
• Sebaea laxa N.E.Br.
• Sebaea leiostyla Gilg
• Sebaea longicaulis Schinz
• Sebaea macrophylla Gilg
• Sebaea marlothii Gilg
• Sebaea membranaceae Hill
• Sebaea microphylla (Edgew.) Knobl.
• Sebaea micrantha (Cham. & Schlechtdel.) Schinz
  • var. micrantha (Cham. & Schlechtdel.) Schinz
  • var. intermedia (Cham. & Schlechtdel.) Marais
• Sebaea minutiflora Schinz
• Sebaea minutissima Hilliard & B.L.Burtt^[10]
• Sebaea natalensis Schinz
• Sebaea ovata (Labill.) R. Br. - yellow sebaea,^[8] yellow centaury
• Sebaea pentendra E. Mey.
  • var. burchellii (Gilg) Marais
  • var. pentendra E. Mey.
• Sebaea pleurostigmatosa Hilliard & B.L. Burtt^[11]
• Sebaea procumbens A.W. Hill
• Sebaea radiata Hilliard & B.L.Burtt
• Sebaea ramosissima Gilg
• Sebaea rara W. Dod
• Sebaea rehmannii Schinz
• Sebaea repens Schinz
• Sebaea scabra Schinz
• Sebaea schlechteri Schinz
• Sebaea sedoides Gilg
  • var. confertiflora (Schinz) Marais
  • var. sedoides Gilg
  • var. schoenlandii (Schinz) Marais
• Sebaea solaris Kissling^[12]
• Sebaea spathulata Steud.
• Sebaea stricta (E. Mey.) Gilg
• Sebaea sulphurea Cham. & Schlechtdl.
• Sebaea thomasii Schinz
• Sebaea zeyheri Schinz
  • var. acutiloba (Schinz) Marais
  • var. cleistantha (R.A. Dyer) Marais
  • var. zeyheri Schinz

Notes and References

1. Kissling. Jonathan. Yuan. Yong-Ming. Küpfer. Philippe. Mansion. Guilhem. The polyphyletic genus Sebaea (Gentianaceae): A step forward in understanding the morphological and karyological evolution of the Exaceae. Molecular Phylogenetics and Evolution. 53. 3. 734–748. 10.1016/j.ympev.2009.07.025. 19646540. December 2009.
2. Pirie. Michael. Litsios. Glenn. Bellstedt. Dirk. Salamin. Nicolas. Kissling. Jonathan. Back to Gondwanaland: can ancient vicariance explain (some) Indian Ocean disjunct plant distributions?. Biology Letters. 11. 6. 10.1098/rsbl.2015.0086. 26063747. 4528461. 20150086. June 2015.
3. Kissling. Jonathan. 2012-01-01. Taxonomy of Exochaenium and Lagenias: Two Resurrected Genera of Tribe Exaceae (Gentianaceae). Systematic Botany. 37. 1. 238–253. 10.1600/036364412X616800. 0363-6445.
4. Kissling. Jonathan. Buerki. Sven. Mansion. Guilhem. 2009-08-01. Klackenbergia (Gentianaceae – Exaceae), a new endemic genus from Madagascar. Taxon. 58. 3. 907–912. 10.1002/tax.583018.
5. Kissling. Jonathan. Endress. Peter K.. Bernasconi. Giorgina. Ancestral and monophyletic presence of diplostigmaty in Sebaea (Gentianaceae) and its potential role as a morphological mixed mating strategy. New Phytologist. 2009. 184. 2. 303–310. 10.1111/j.1469-8137.2009.03000.x. 19796337.
6. Marloth. R.. A diplostigmatic plant, Sebaea exacoides (L.) Schinz (Belmontia cordata L.).. Transactions of the Royal Society of South Africa. 1909. 1. 1 . 311–314. 10.1080/00359190909520037. 1909TRSSA...1..311M .
7. Kissling. Jonathan. Barrett. Spencer C.H.. Diplostigmaty in plants: a novel mechanism that provides reproductive assurance. Biology Letters. 2013. 9. 5. 10.1098/rsbl.2013.0495. 23945209. 3971688. 20130495.
8. Web site: Sebaea . 3 January 2011. Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra.
9. Oliver . I.M. . Beyers . J.B.P. . A new species of Sebaea from the Swartberg range Western Cape, South Africa. . Bothalia . 2001 . 31 . 2 . 207–209 . 10.4102/abc.v31i2.526 . free .
10. Hilliard O.M. and Burtt B.L. 1982. Notes on some plants of Southern Africa chiefly from Natal: IX. Notes from the Royal Botanic Garden, Edinburg 40, 247-298.
11. Hilliard O.M. and Burtt B.L. 1983. Notes on some plants of Southern Africa chiefly from Natal: X. Notes from the Royal Botanic Garden, Edinburg 41, 304-306.
12. Kissling . Jonathan . Zeltner . Louis . Sebaea solaris (Gentianaceae), a new species from the Western cape of South Africa . South African Journal of Botany . 2019 . 123 . 20–22 . 10.1016/j.sajb.2019.02.002. free .