Sisymbrium erysimoides Desf.

First published in Fl. Atlant. 2: 84 (1798)
This species is accepted
The native range of this species is Macaronesia, Medit. to N. Tanzania and Pakistan. It is an annual and grows primarily in the subtropical biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Cruciferae, Bengt Jonsell (University of Stockholm). Flora of Tropical East Africa. 1982

Morphology General Habit
Annual herb with 10–80 cm. high erect stems, unbranched or with a few branches in the upper parts, sparsely hairy.
Morphology Leaves
Basal leaves similar to cauline ones, evanescent; cauline leaves petioled, lyrate-pinnatisect, with 2–3 pairs of lateral lobes; lamina thin, coarsely serrate, 2–18 cm. long, with 2–3 pairs of 0.5–4 cm. long lateral lobes and a larger rather acute terminal lobe; petiole 0.5–4 mm. long.
Morphology Reproductive morphology Inflorescences
Racemes terminal, dense, with numerous small flowers, in fruit rather dense to lax, up to 50 cm. long; pedicels spreading (often at 90° angle), 1.5–3 mm. long, as wide as the siliqua, usually horizontally oriented.
Morphology Reproductive morphology Flowers Calyx
Sepals yellowish green, narrowly oblong, ± 2.5 mm. long.
Morphology Reproductive morphology Flowers Corolla
Petals pale yellow, narrowly spathulate, 2–3.5 mm. long, ± equalling the sepals.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens distinctly tetradynamous, the longer ones 1.5–2 mm. long; anthers ± 0.5 mm. long.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary narrowly cylindrical, with very short style and semiglobular stigma.
Morphology Reproductive morphology Fruits
Siliqua straight, somewhat subulate and when fully ripe distinctly tapering upwards, 15–40 cm. long, ± 1 mm. broad; valves glabrous; style ± 1 mm. long, very narrow.
Morphology Reproductive morphology Seeds
Seeds pale yellow or red-brown, oblong in outline, 1–1.2 mm. long, ± 0.5 mm. broad, nearly smooth.
Figures
Fig. 22, p. 63.
Habitat
Clearings in upland forest; 2000–2400 m.
Distribution
K3 T2 Mediterranean area
[FTEA]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Annual erect herb, 10–80 cm tall, sparsely hairy
Morphology Leaves
Leaves petiolate, 2–20 x 1–8 cm, rather thin, lyrate-pinnatifid with 2–3 pairs of side lobes, coarsely and acutely serrate
Morphology Reproductive morphology Flowers Calyx
Sepals c. 2.5 mm long
Morphology Reproductive morphology Flowers Corolla
Petals 2–3.5 mm long, equalling sepals, pale yellow, narrowly spathulate
Morphology Reproductive morphology Fruits
Siliquae 15–40 x c. 1 mm, straight, when fully ripe distinctly tapering outwards; style c. 1 mm long, very narrow
Morphology Reproductive morphology Flowers Pedicel
Pedicels 1.5–3 mm long, spreading (often at 90° angle), stiff, about as thick as the siliqua
Morphology Reproductive morphology Seeds
Seeds 1–1.2 x c. 0.5 mm, oblong to rectangular in outline, pale brown.
Distribution
N1–3; Macaronesia, N and E Africa, SW Asia.
Ecology
Altitude range 1100–2000 m.
[FSOM]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0
  • Flora of Somalia

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

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

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/
  • 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
  • Kew Science Photographs

    • Copyright applied to individual images