Keteleeria is a genus of three species of coniferous trees in the family Pinaceae first described as a genus in 1866.[1][2]
| Keteleeria Temporal range:
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|---|---|
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| Keteleeria evelyniana leaves | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Pinophyta |
| Class: | Pinopsida |
| Order: | Pinales |
| Family: | Pinaceae |
| Subfamily: | Abietoideae |
| Genus: | Keteleeria Carrière |
| Type species | |
| Keteleeria fortunei (Murray) Carrière
| |
The genus name Keteleeria honours J.B. Keteleer (1813–1903), a French nurseryman. The group is related to the genera Nothotsuga and Pseudolarix. It is distinguished from Nothotsuga by the much larger cones, and from Pseudolarix by the evergreen leaves and the cones not disintegrating readily at maturity. All three genera share the unusual feature of male cones produced in umbels of several together from a single bud, and also in their ability, very rare in the Pinaceae, of being able to coppice.
The genus is found in southern China (from Shaanxi south to Guangdong and Yunnan), Hainan, Taiwan, northern Laos, and Vietnam.[3]
They are evergreen trees reaching 35 m (115 ft) tall. The leaves are flat, needle-like, 1.5–7 cm (9⁄16–2+3⁄4 in) long and 2–4 cm (13⁄16–1+9⁄16 in) broad. The cones are erect, 6–22 cm (2+3⁄8–8+11⁄16 in) long, and mature in about 6–8 months after pollination; cone size and scale shape is very variable within all three species.
The variability of the cones has led in the past to the description of several additional species (up to 16 'species' have been named), but most authorities now only accept three species. Flora of China, however, recognized five.[4]
Phylogeny
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Latah Formation, Spokane, Washington
| Stull et al. 2021[5][6] | |||||||||||||||
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The World Checklist maintained by Kew Botanical Garden accepts the following:[3]
- Species[3]
- Keteleeria davidiana (C.E.Bertrand) Beissn. — central and southern China, Taiwan
- Keteleeria evelyniana Mast. — Sichuan, Yunnan, N Laos, Vietnam
- Keteleeria fortunei (A.Murray) Carrière — southern China
- †Keteleeria heterophylloides (Berry) Brown, 1935 - Miocene (Langhian) Latah Formation, Washington[7]
- formerly included[3]
moved to Abies
- Keteleeria fabri =Abies fabri — Sichuan
Fossil record
editThe earliest record of the genus is from the Early Cretaceous (Barremian -Aptian ~120 million years ago) of China.[8]
Fossil pollen of Keteleeria caucasica have been recovered from strata of the Late Miocene in Georgia in the Caucasus region.[9] Undescribed Keteleeria sp. fossils are known from the early Pleistocene of southern Portugal[10] and the Coldwater Beds in the Early Eocene Okanagan Highlands of Canada.[11] Named species based on cones, leaves, pollen, seeds, and wood have been described from Cretaceous through Pliocene sediments in Europe, North America and Asia.[12]
- Keteleeria caucasica Ramischvili - pollen; Miocene, Kulistskhali river, Georgia
- Keteleeria cretacea Miki & Yas. Maeda - cones; Cretaceous, Izumi Group, Japan
- Keteleeria ezoana Tanai - cones & seeds; Miocene, Yoshioka, Japan
- Keteleeria heterophylloides (Berry) Brown - leaves; Miocene, Latah Formation, Washington, US
- Keteleeria hoehnei Kirchheimer - cones; Miocene, Wiesa near Kamenz, Germany
- Keteleeria mabetiensis (Watari) Watari - wood; Miocene, Mabechi River; Japan
- Keteleeria microreticulata Ananova - pollen; Miocene, Taganrog peninsula, Russia
- Keteleeria prambachensis (E. Hofm.) W. Klaus - Oligocene, Prambachkirchen, Austria
- Keteleeria rhenana Kräusel - seeds; Miocene, Mainz-Kastel, Germany
- Keteleeria robusta Miki - cones; Pliocene, Tokitsu, Japan
- Keteleeria rujadana R.N. Lakh. - cones; Oligocene Rujada flora, Oregon, US
- Keteleeria shanwangensis Xiang et al. - cones; Miocene, Shanwang Formation, Shandong, China
- Keteleeria zhilinii - Blokhina & O.V. Bondarenko - wood; Pliocene, Pavlovsky basin, Primorye, Russia
Several fossil species were formerly included in Keteleeria but have been moved:
- Abiespollenites davidianaeformis (Zaklinsk.) Krutzsch formerly Keteleeria davidianaeformis Zaklinsk.
- Abiespollenites dubius (Chlon.) Krutzsch formerly Keteleeria dubia Chlon.
- Cathaya bergeri (Kirchheim.) Wilf. Schneider ex Mai & E. Velitzelos formerly Keteleeria bergeri Kirchheim.
- Cathaya loehri (Engelh. & Kink.) Chun & Kuang formerly Keteleeria loehri Engelh. & Kink.
References
edit- ^ Carrière, Élie Abel. 1866. Revue Horticole 37: 449
- ^ Tropicos, Keteleeria Carrière
- ^ a b c d Kew World Checklist of Selected Plant Families
- ^ "Keteleeria Carrière, Rev. Hort. 37: 449. 1866". Flora of China. 4: 42.
- ^ Stull, Gregory W.; Qu, Xiao-Jian; Parins-Fukuchi, Caroline; Yang, Ying-Ying; Yang, Jun-Bo; Yang, Zhi-Yun; Hu, Yi; Ma, Hong; Soltis, Pamela S.; Soltis, Douglas E.; Li, De-Zhu; Smith, Stephen A.; Yi, Ting-Shuang; et al. (2021). "Gene duplications and phylogenomic conflict underlie major pulses of phenotypic evolution in gymnosperms". Nature Plants. 7 (8): 1015–1025. bioRxiv 10.1101/2021.03.13.435279. doi:10.1038/s41477-021-00964-4. PMID 34282286. S2CID 232282918.
- ^ Stull, Gregory W.; et al. (2021). "main.dated.supermatrix.tree.T9.tre". Figshare. doi:10.6084/m9.figshare.14547354.v1.
{{cite journal}}: Cite journal requires|journal=(help) - ^ Brown, R. (1935). "Miocene leaves, fruits, and seeds from Idaho, Oregon, and Washington". Journal of Paleontology. 9: 572–587.
- ^ Zhu, Yanbin; Li, Ya; Tian, Ning; Wang, Yongdong; Xie, Aowei; Zhang, Li; An, Pengcheng; Wu, Zhenyu (April 2024). "A new species of Keteleeria (Pinaceae) from the Lower Cretaceous of Inner Mongolia, Northeast China, and its palaeogeographic and palaeoclimatic implications". Cretaceous Research. 156: 105805. doi:10.1016/j.cretres.2023.105805.
- ^ The History of the Flora and Vegetation of Georgia by Irina Shatilova, Nino Mchedlishvili, Luara Rukhadze, Eliso Kvavadze, Georgian National Museum Institute of Paleobiology, Tbilisi 2011, ISBN 978-9941-9105-3-1
- ^ Fernando Reboredo, Forest Context and Policies in Portugal: Present and Future Challenges, Springer, 28 August 2014 - ISBN 978-3-319-08455-8
- ^ Mathewes, R. W.; Greenwood, D. R.; Archibald, S. B. (2016). "Paleoenvironment of the Quilchena flora, British Columbia, during the Early Eocene Climatic Optimum" (PDF). Canadian Journal of Earth Sciences. 53 (6): 574–590. Bibcode:2016CaJES..53..574M. doi:10.1139/cjes-2015-0163. hdl:1807/71979.
- ^ "Keteleeria". The International Fossil Plant Names Index. Retrieved October 1, 2023.
External links
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