镰木属
镰木属 化石时期:
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镰木的化石 | |
科学分类 | |
界: | 植物界 Plantae |
演化支: | 维管植物 Tracheophyta |
目: | †镰木目 Drepanophycales |
科: | †镰木科 Drepanophycaceae |
属: | †镰木属 Drepanophycus Göpp., 1852 |
模式种 | |
刺镰蕨 Drepanophycus spinaeformis Göpp.
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种 | |
镰木(学名:Drepanophycus),又名镰蕨,是一属已灭绝的陆生维管植物,生存于古生代泥盆纪。它们和哈氏蕨属有相似之处[2],和同时期与本属密切相关的巴氏石松属反而有许多不同处,如孢子囊的位置、叶的形状及排列等。
特征
镰蕨的植物体可分为横卧的拟根茎和二歧分叉或单轴分叉的直立茎轴两部分。它们拥有真正的叶,呈刺状,孢子囊单个着生在叶的上表面,不聚集成穗。茎的直径为几毫米至几厘米,内具维管束,基部有真正的根。
物种
- 刺镰木 Drepanophycus spinaeformis Göpp. = 刺镰蕨
- Drepanophycus crepini (Gilkinet)
- Drepanophycus qujingensis C.S.Li & D.Edwards
- Drepanophycus gaspianus (Dawson) Kräusel & Weyland
- Drepanophycus spinosus
以下物种现时已被置入Haskinsia属。
- Drepanophycus colophyllus Grierson & Banks
参考文献
- ^ Fossilworks: Drepanophycus. [2018-06-30]. (原始内容存档于2018-06-29) (英语).
- ^ Li, C.-S. & Edwards, D. A new microphyllous plant from the Lower Devonian of Yunnan Province, China. Am. J. Bot. 1997, 84 (10): 1441 [2011-04-05]. doi:10.2307/2446142. (原始内容存档于2010-06-26).
- Dawson, J.W. On fossil plants from the Devonian rocks of Canada. Quarterly Journal of the Geological Society of London. 1859, 15: 477–488. doi:10.1144/GSL.JGS.1859.015.01-02.57.
- Göppert, H.R. Fossile Flora des Ubergangsgebirges. Verhandlungen der Kaiserlichen Leopoldinisch-Carolinischen Akademie der Naturforscher, Supplement des Bandes. 1852, 14: 1–299.
- Cheng-Sen, Li; Edwards, D. A re-investigation of Halle's Drepanophycus spinaeformis Göpp. from the Lower Devonian of Yunnan Province, Southern China. Botanical Journal of the Linnean Society. 1995, 118 (3): 163–192. doi:10.1111/j.1095-8339.1995.tb00468.x.
- Li, Cheng-Sen; Hueber, F.M.; Hotton, C.L. A neotype for Drepanophycus spinaeformis Göppert 1852. Canadian Journal of Botany. 2000, 78: 889–902. doi:10.1139/b00-062.
- Sun, Tong-Xing; Edwards, D.; Li, Cheng-Sen. The stomatal apparatus of Lycopodium japonicum and its bearing on the stomata of the Devonian lycophyte Drepanophycus spinaeformis. Botanical Journal of the Linnean Society. 2005, 149: 209–216. doi:10.1111/j.1095-8339.2005.00434.x.