Daubenya is a genus of bulbous flowering plants in the familyAsparagaceae, subfamily Scilloideae (also treated as the family Hyacinthaceae).[2] It is native to the Cape Province of South Africa.[1] At first believed to consist of a single species, Daubenya aurea, the genus was expanded in 2000 to include the genera Androsiphonand Amphisiphon and various species that had previously been classified as Polyxena, Massonia, or Neobakeria. "The poor congruence between morphological and other characters within Hyacinthaceae has also made generic circumscriptions very difficult. One of the consequences of this has been the recognition of a large number of genera that are poorly defined morphologically."- (Speta 1998)
Species of Daubenya grow from bulbs covered with a brownish tunic. Each bulb produces only two leaves, which appear with the flowers and normally spread out along the ground on either side. The inflorescence is a raceme, usually very condensed and close to the ground. Individual flowers are white, pink, yellow or red, sometimes with the tepals furthest from the flowering stem (i.e. on the outside of the inflorescence) larger than the others. The tepals are fused at the base forming a distinct tube. The stamens arise from the mouth of this tube, and are often very prominent. The more or less globe-shaped black seeds are produced inside a papery capsule.[3][4]
Species are variously pollinated by bees, butterflies, moths, the monkey beetleLepisia glenlyonensis[5] and sunbirds.[6] The water-retaining nature of doleritic clays ensures their remaining moist for longer than clays formed from shales of the Karoo series. Exceptionally, D. namaquensisis, is found in deep red sands and D. zeyheri in calcareous coastal sands.
There is no formal conservation policy for Daubenya species and their future prospects remain bleak. Cultivated bulbs of D. aurea are on offer at commercial nurseries, though all the species are worthy of cultivation for their bright and often fragrant flowers.[7]
Speciesedit
As of March 2013[update], the World Checklist of Selected Plant Families recognized eight species:[8] All but D. aurea were transferred to the genus Daubenya during revisions of the South African members of the Scilloideae in early 2000s; they were previously placed in Androsiphon, Amphisiphon, Polyxena, Massonia, or Neobakeria.[9]
^Search for "Daubenya", World Checklist of Selected Plant Families, Royal Botanic Gardens, Kew, retrieved 2013-03-28
^Manning, J.C.; Goldblatt, P. & Fay, M.F. (2004), "A revised generic synopsis of Hyacinthaceae in Sub-Saharan Africa, based on molecular evidence, including new combinations and the new tribe Pseudoprospereae", Edinburgh Journal of Botany, 60 (3), doi:10.1017/S0960428603000404
External linksedit
Media related to Daubenya at Wikimedia Commons
Data related to Daubenya at Wikispecies
Cumbleton, Paul, , Wisley Alpine Log, Scottish Rock Garden Club, archived from the original on 2013-04-12, retrieved 2013-03-29 – photographs of six species
"Daubenya", Pacific Bulb Society, retrieved 2013-03-29 – photographs of seven species
January 01, 1970
daubenya, genus, bulbous, flowering, plants, family, asparagaceae, subfamily, scilloideae, also, treated, family, hyacinthaceae, native, cape, province, south, africa, first, believed, consist, single, species, aurea, genus, expanded, 2000, include, genera, an. Daubenya is a genus of bulbous flowering plants in the family Asparagaceae subfamily Scilloideae also treated as the family Hyacinthaceae 2 It is native to the Cape Province of South Africa 1 At first believed to consist of a single species Daubenya aurea the genus was expanded in 2000 to include the genera Androsiphonand Amphisiphon and various species that had previously been classified as Polyxena Massonia or Neobakeria The poor congruence between morphological and other characters within Hyacinthaceae has also made generic circumscriptions very difficult One of the consequences of this has been the recognition of a large number of genera that are poorly defined morphologically Speta 1998 Daubenya Daubenya marginata in cultivation in Japan Scientific classification Kingdom Plantae Clade Tracheophytes Clade Angiosperms Clade Monocots Order Asparagales Family Asparagaceae Subfamily Scilloideae Genus DaubenyaLindl 1 Type species Daubenya aurea Synonyms Androsiphon Schltr 1924 Neobakeria Schltr 1924 Amphisiphon W H Baker 1936 Contents 1 Description 2 Species 3 References 4 External linksDescription editSpecies of Daubenya grow from bulbs covered with a brownish tunic Each bulb produces only two leaves which appear with the flowers and normally spread out along the ground on either side The inflorescence is a raceme usually very condensed and close to the ground Individual flowers are white pink yellow or red sometimes with the tepals furthest from the flowering stem i e on the outside of the inflorescence larger than the others The tepals are fused at the base forming a distinct tube The stamens arise from the mouth of this tube and are often very prominent The more or less globe shaped black seeds are produced inside a papery capsule 3 4 Species are variously pollinated by bees butterflies moths the monkey beetle Lepisia glenlyonensis 5 and sunbirds 6 The water retaining nature of doleritic clays ensures their remaining moist for longer than clays formed from shales of the Karoo series Exceptionally D namaquensisis is found in deep red sands and D zeyheri in calcareous coastal sands There is no formal conservation policy for Daubenya species and their future prospects remain bleak Cultivated bulbs of D aurea are on offer at commercial nurseries though all the species are worthy of cultivation for their bright and often fragrant flowers 7 Species editAs of March 2013 update the World Checklist of Selected Plant Families recognized eight species 8 All but D aurea were transferred to the genus Daubenya during revisions of the South African members of the Scilloideae in early 2000s they were previously placed in Androsiphon Amphisiphon Polyxena Massonia or Neobakeria 9 Image Scientific name Distribution nbsp Daubenya alba A M van der Merwe Northern Cape Province nbsp Daubenya aurea Lindl South Africa nbsp Daubenya capensis Schltr A M van der Merwe amp J C Manning syn Androsiphon capensis Schltr northwest Cape Daubenya comata Burch ex Baker J C Manning amp A M van der Merwe syn Massonia comata Burch ex Baker Free State Northern Cape and the North Eastern parts of Western Cape nbsp Daubenya marginata Willd ex Kunth J C Manning amp A M van der Merwe syn Massonia marginata Willd ex Kunth northwest Cape Daubenya namaquensis Schltr J C Manning amp Goldblatt syn Neobakeria namaquensis Schltr Namaqualand nbsp Daubenya stylosa W H Baker A M van der Merwe amp J C Manning syn Amphisiphon stylosus W H Baker Bokkeveld Plateau nbsp Daubenya zeyheri Kunth J C Manning amp A M van der Merwe syn Massonia zeyheri Kunth South Western Cape References edit a b Daubenya World Checklist of Selected Plant Families Royal Botanic Gardens Kew retrieved 2013 03 28 Stevens P F 2001 onwards Asparagales Scilloideae Angiosperm Phylogeny Website retrieved 2013 03 28 Daubenya Raf eMonocot retrieved 2013 03 28 permanent dead link Daubenya Pacific Bulb Society retrieved 2013 03 29 Home Pacific Bulb Society Daubenya www pacificbulbsociety org Retrieved 2020 07 27 Login Search for Daubenya World Checklist of Selected Plant Families Royal Botanic Gardens Kew retrieved 2013 03 28 Manning J C Goldblatt P amp Fay M F 2004 A revised generic synopsis of Hyacinthaceae in Sub Saharan Africa based on molecular evidence including new combinations and the new tribe Pseudoprospereae Edinburgh Journal of Botany 60 3 doi 10 1017 S0960428603000404External links edit nbsp Media related to Daubenya at Wikimedia Commons nbsp Data related to Daubenya at Wikispecies Cumbleton Paul Log 9 22nd Nov 2007 Wisley Alpine Log Scottish Rock Garden Club archived from the original on 2013 04 12 retrieved 2013 03 29 photographs of six species Daubenya Pacific Bulb Society retrieved 2013 03 29 photographs of seven species Retrieved from https en wikipedia org w index php title Daubenya amp oldid 1214316725, wikipedia, wiki, book, books, library,
