Phyllodes are modified petioles or leaf stalks, which are leaf-like in both appearance and function. In some plants, these become flattened and widened, while the leaf itself becomes reduced or vanishes altogether. Thus the phyllode comes to serve the purpose of the leaf. Some important examples are Euphorbia royleana which are cylindrical and Opuntia which are flattened. thumb|right|[[Acacia suaveolens (Sm.) Willd. [as Mimosa suaveolens Sm.] La Billardière (Labillardière), J.-J. Houton de, Novae Hollandiae plantarum specimen, vol. 2: p. 87, t. 236 (1804) (Poiteau)]]
Wikidata facts
- Subclass of
- petiole
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- Citrus hystrix 1DS-II 2-6147.jpg
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- different from
- Phyllodes
- Commons category
- Phyllodes (expanded petioles)
- described by source
- Brockhaus and Efron Encyclopedic Dictionary
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Article · 中文
假葉 是特化為葉狀的葉柄或，其外觀和功能近似一般的葉。在某些植物，特化的葉柄變寬、變扁形成假葉；而真葉則退化變小或甚至消失，由假葉取代其功能。常見的例子包含特化為圓柱狀假葉的霸王鞭以及特化為扁平狀假葉的仙人掌屬植物。 此外，假葉亦常見於相思樹屬植物，尤其是澳大利亞類群中。在較年輕的植株可能同時出現假葉和羽狀複葉的真葉。右圖中的繪圖（出自）即可見年輕的真葉和發展中的假葉同時出現、以及成熟植株的假葉型態。 豆科的植物也是以假葉作為分類依據。 * 豆科植物的假葉 * * * * * 馬占相思
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