Distylium
| Distylium | |
|---|---|
| File:Distylium racemosum3.jpg | |
| Distylium racemosum in Japan | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Saxifragales |
| Family: | Hamamelidaceae |
| Subfamily: | Hamamelidoideae |
| Tribe: | Fothergilleae |
| Genus: | Distylium Siebold & Zucc. |
| Species | |
|
See text | |
| Synonyms[1] | |
|
Saxifragites Gagnep. | |
Distylium (winter-hazel) is a genus of 16 species of evergreen shrubs and trees in the witch hazel family, Hamamelidaceae, native to eastern and southeastern Asia.
Taxonomy
[edit | edit source]Fossil record
[edit | edit source]Researchers have recognized Distylium fossil pollen among the middle Miocene Sarmatian palynoflora from the Lavanttal Basin of Austria. The sediment containing the fossil pollen had accumulated in a lowland wetland environment with various vegetation units of mixed evergreen/deciduous broadleaved/conifer forests surrounding the wetland basin. Key relatives of the fossil taxa found with Distylium are presently confined to humid warm temperate environments, suggesting a subtropical climate during the middle Miocene in Austria.[2] Distylium macrofossils of the Lower and Middle Miocene, are known from the lignite mines of the Kaltennortheim Formation in the Rhön Mountains, central Germany, where it is associated with typical elements of the Mastixioid floras that attest to an optimal warm humid phase of the Miocene.[3]
Species
[edit | edit source]16 species are accepted.[1]
- Distylium annamicum (Gagnep.) Airy Shaw – eastern Thailand and southern Vietnam
- Distylium buxifolium (Hance) Merr. - China
- Distylium chinense (Franch. ex Hemsl.) Diels - China
- Distylium chungii (F.P.Metcalf) W.C.Cheng - China
- Distylium cuspidatum H.T.Chang - China
- Distylium dunnianum H.Lév. - China
- Distylium elaeagnoides H.T.Chang - China
- Distylium gracile Nakai - China
- Distylium indicum Benth. ex C.B.Clarke – Meghalaya to Indochina
- Distylium lepidotum Nakai – Ogasawara Islands
- Distylium macrophyllum H.T.Chang - China
- Distylium myricoides Hemsl. - China
- Distylium pingpienense (Hu) E.Walker - China
- Distylium racemosum Siebold & Zucc. - tree up to 20m; China, Korea, Japan (Ryukyu Islands)(known as Isunoki(イスノキ)/Nara(柞), Taiwan
- Distylium stellare Kuntze – Peninsular Malaysia, Sumatra, Java, and Lesser Sunda Islands
- Distylium tsiangii Chun ex Walker - China
References
[edit | edit source]- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part III. Magnoliophyta 1 – Magnoliales to Fabales, Friðgeir Grímsson, Barbara Meller, Johannes M. Bouchal & Reinhard Zetter, Grana 2015, Vol 54, No. 2,85-128.
- ^ The floral change in the tertiary of the Rhön mountains (Germany) by Dieter Hans Mai - Acta Paleobotanica 47(1): 135-143, 2007.
External links
[edit | edit source]- Error creating thumbnail: File missing Media related to Lua error in Module:Commons_link at line 62: attempt to index field 'wikibase' (a nil value). at Wikimedia Commons
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