| 词条 | Lagenandra |
| 释义 |
|image = Lagenandra ovata i koenigii DPR.png |image_caption = Lagenandra ovata (left) and Lagenandra koenigii (right)[1] |display_parents = 2 |taxon = Lagenandra |authority = Dalzell }}Lagenandra is a genus of flowering plants in the family Araceae.[2] It is endemic to the Indian Subcontinent (Bangladesh, Sri Lanka, and India).[3][4] The genus is similar to Cryptocoryne, but can be distinguished from it by its involute vernation. Cryptocoryne on the other hand exhibit convolute vernation.[5] DescriptionHelophytes, rarely rheophytes, with thick creeping rhizome; leaf blade simple, ovate to almost linear, fine venation transverse-reticulate; spathe tube with connate margins; spadix entirely enclosed in spathe tube; flowers unisexual, perigone absent. Differs from Cryptocoryne in having female flowers spirally arranged (pseudo-whorl in Lagenandra nairii, whorled in Lagenandra gomezii) and free; spathe tube "kettle" with connate margins (containing spadix) occupying entire spathe tube; spathe blade usually opening only slightly by a straight or twisted slit; berries free, opening from base; leaf ptyxis involute.[6]SpeciesAccepted species are as follows.[3] A key to the species described before 1986 was provided by Crusio and de Graaf.[7]
References1. ^Pohl in Das Pflanzenreich of Engler - "Das Pflanzenreich" Vol. 73-74 (1920) {{Taxonbar|from=Q121023}}2. ^{{cite journal |author=de Wit, H.C.D. |title=Revisie van het genus Lagenandra Dalzell (Araceae) |journal=Mededelingen Landbouwhogeschool Wageningen |volume=78 |issue=13 |pages=1–45 |year=1978}} 3. ^1 Kew World Checklist of Selected Plant Families 4. ^{{cite web | url = http://www.xs4all.nl/~crypts/Lagenandra/index.html | title = Lagenandra gallery | author = Bastmeijer, Jan D | accessdate = 2009-01-09}} 5. ^{{cite book|last=Bown|first=Demi|title=Aroids: Plants of the Arum Family|publisher=Timber Press|isbn=0-88192-485-7}} 6. ^Simon J. Mayo, Josef Bogner, Peter C. Boyce: The Genera of Araceae. 1. published, Royal Botanic Gardens/ Kew Publishing, London 1997, {{ISBN|1-900347-22-9}} ([https://www.researchgate.net/publication/280387316_The_Genera_of_Araceae Full-text as PDF-file]; Continental Printing, Belgium 1997). 7. ^{{cite journal |author=Crusio W.E. and de Graaf A. |title=Lagenandra dewitii Crusio et de Graaf (Araceae), eine neue Art aus Sri Lanka |journal=Aqua Planta |volume=11 |issue= |pages=56–59 |year=1986 |month=}} 3 : Araceae genera|Lagenandra|Flora of the Indian subcontinent |
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