Contains 7 accepted taxa overall.
Characteristics
Classification
Citation
HYDROCOTYLE Linnaeus, Sp. Pl. 234. 1753.
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TYPE: Hydrocotyle vulgaris Linnaeus Lectotypified by Britton & A. Brown, Ill. Fl. N. U.S., ed. 2. 2: 648. 1913.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Hydrocotyle americana | American Water-pennywort | |||
| Hydrocotyle bonariensis | Dune Pennywort | |||
| Hydrocotyle bowlesioides | Largeleaf Marshpennywort | |||
| Hydrocotyle ranunculoides | Swamp Water-pennywort | |||
| Hydrocotyle sibthorpioides | Lawn Water-pennywort | |||
| Hydrocotyle umbellata | Marsh Water-pennywort | |||
| Hydrocotyle verticillata | Whorled marshpennywort |
Identification Key
1. Leaf blade peltate or not, with a distinct sinus, often extending to the petiole or nearly so, most blades with at least one sinus >½ of the blade width or length
2
1. Leaf blade peltate, nearly rotund lacking a sinus or the sinus <¼ of the blade width or length
4
2. Leaves hairy
2. Leaves glabrous
3
3. Stems and petioles mostly 2-4 mm wide; leaves to 8 cm long or wide
3. Stems and petioles 0.5-1.5 mm wide; leaves to 1.5 cm long or wide
4. Inflorescence a simple or compound umbel
5
4. Inflorescence a spike or raceme
6
5. Infloresnce a compound umbel
5. Inflorescenee a simple umbel, very rarely if ever compound
6. Flower or fruit with a pedicel up to 10 mm long
6. Flower or fruit sessile to subsessile, the pedicel <1 mm long
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| No synonyms found. | |||