Adder's-tongue Spearwort - Ranunculus ophioglossifolius
Favourite Photos
| image | species | author | location | uploaded | taken | select |
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Adder's-tongue Spearwort - Ranunculus ophioglossifolius | dylan | South Gloucester | 7 Nov 2023, 5:18 p.m. | 15 Sep 2023, 2:28 p.m. |
Species Description
Nationally rare. Habitat includes: marshy ground such as ponds that are often cattle trodden. Growing habit: Annual. Height: Up to 40 cm.
Stace 4:
Ranunculus ophioglossifolius Vill. - Adder's-tongue Spearwort.
Erect annual to 40cm; lowest leaves ovate, cordate, glabrous, more or less entire; stem-leaves broadly to narrowly elliptic, shallowly and distantly lobed; flowers 5-9mm across; sepals not reflexed; achenes about 1.5mm, glabrous, with small tubercles on sides, with very short beak; 2n=16. Native; marshy ground; East & West Gloucestershire, formerly Dorset, South Hampshire and Jersey.
Key:
- Petals yellow; achenes not transversely ridged
- Leaves entire or toothed at margin, unlobed
- Flowers <2(2.5)cm across; achenes 1-2(2.3)mm
- Lower leaves cordate at base
- Stems erect; achenes tuberculate