Sagittaria terres

Sagittaria terres is a misspelling of Sagittaria teres; under both names Sagittaria subulata is mistakenly offered in the trade.¹² The true quill-leaved arrowhead is a perennial species from the north-eastern USA that grows on sandy pond shores and in swamps with acidic water.¹³⁴ Its almost terete, rush-like leaves reach up to 60 cm above water and at most approx. 18 cm when submersed.¹³ It is not kept in aquaria.¹⁵

The S. subulata sold in this way comes from the eastern USA and possibly South America; through numerous runners it quickly forms dense, low lawns and is regarded as very easy.²⁶ It is unresolved whether the plants in the trade really belong to this species.⁶

1. Sagittaria teres – Flowgrow aquatic plant database (accessed 5 October 2026)
2. Sagittaria subulata – Flowgrow aquatic plant database (accessed 5 October 2026)
3. Sagittaria teres – Flora of North America, eFloras.org (accessed 5 October 2026)
4. Sagittaria teres – Plants of the World Online, Royal Botanic Gardens Kew (WCVP data as of 4 June 2026, accessed 5 October 2026)
5. Kasselmann, C. (2019): Aquarienpflanzen. 4th edition (German). - Ulmer Verlag, Stuttgart: p. 538.
6. Kasselmann, C. (2019): Aquarienpflanzen. 4th edition (German). - Ulmer Verlag, Stuttgart: p. 539.