Oenanthe L.

First published in Sp. Pl.: 254 (1753)
This genus is accepted
The native range of this genus is Alaska to SW. Mexico, Madeira, NW. Africa, Eurasia.

Descriptions

Umbelliferae, C.C. Townsend. Flora of Tropical East Africa. 1989

Morphology General Habit
Glabrous, perennial, usually aquatic or marsh plants with variously pinnate leaves, erect and rather wiry to weak and decumbent or scrambling over other vegetation, roots fibrous or tuberous
Morphology Reproductive morphology Inflorescences
Umbels numerous, compound, usually pedunculate; involucre none or of few to several bracts; involucel of usually numerous bracteoles
Morphology Reproductive morphology Flowers
Flowers all hermaphrodite or polygamous with some hermaphrodite and some ♂
Morphology Reproductive morphology Flowers Calyx
Calyx-teeth present, persistent
Morphology Reproductive morphology Flowers Corolla
Petals white to creamy or greenish with a distinct inflexed lobule, frequendy emarginate above
Morphology Reproductive morphology Fruits
Fruit glabrous, ovoid to cylindrical or globose, crowned with the persistent small to very conspicuous calyx-teeth; lateral primary ribs corky, flattened ventrally to give abroad, flat commissure; dorsal ribs variable, either the 3 primary ribs well-developed and corky, or primary and secondary ribs similarly developed and filiform, or the primary ribs slender and the secondary inflated and corky; vittae variable, either solitary in the valleculae or beneath the secondary or all ribs; stylopodia mostly conical; carpophore bifid, the segments fused to the mericarps
Morphology Reproductive morphology Seeds
Endosperm in section roundish-pentagonal to transversely subelliptical.
[FTEA]

Sources

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Herbarium Catalogue Specimens

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0