Code
RHGST
Growth form
Broadleaf
Biological cycle
Annual
Habitat
Terrestrial
Rhagadiolus stellatus (L.) Gaertn.
synonym | Lapsana ramosissima Crantz |
synonym | Lapsana stellata L. |
synonym | Rhagadiolus hebelaenus (DC.) Vassilcz. |
synonym | Rhagadiolus intermedius Ten. |
synonym | Rhagadiolus leiocarpus (DC.) A.W.Hill |
synonym | Rhagadiolus leiocarpus (DC.) Bonnier |
synonym | Rhagadiolus lyratus Lam. |
synonym | Rhagadiolus stellatus var. eriocarpus Faure & Maire |
synonym | Rhagadiolus stellatus var. eriophyllus Faure & Maire |
synonym | Rhagadiolus stellatus var. hebelaenus DC. |
synonym | Rhagadiolus stellatus var. intermedius (Ten.) DC. |
synonym | Rhagadiolus stellatus var. leiocarpus DC. |
synonym | Rhagadiolus stellatus var. stellatus |
Arabic |
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English |
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French |
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Italian |
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Portuguese |
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Spanish; Castilian |
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Seedling
Cotyledons large, 30-50 x 3-4 mm, elliptic-oblong, base gradually attenuating into a petiole, midrib visible, glabrous. First leaves in a loose, erect rosette, obovate, toothed with blunt apicles, long-petiolate, densely hairy. The hypocotyl axis is short, 5 mm, and purplish. Slightly yellowish-green seedling.
Adult plant
Rhagadiolus stellatus is an annual plant with an upright habit, emitting a white latex when broken. Stem is slender, corymb-branched, fluted, up to 50 cm high, glabrous. Basal leaves large, obovate, lyrate, petiolate; upper leaves lanceolate, sparsely toothed, sessile, dotted with short hairs, especially on the margin. Capitula small, cylindrical and few in number, consisting solely of short, yellow, ligulate florets. Involucral bracts in 2 rows, outer ones very small, inner ones accrescent at fruiting. Achenes without pappus, dimorphic, the outer ones spread out in a star of 7-8 branches, 15-22 mm long, linear, with bristly backs towards their apex, the inner ones small, 4 mm at most, glabrous.
Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Life cycle
Algeria: Rhagadiolus stellatus germinates in autumn-winter, flowering from March to May.
Morocco: Rhagadiolus stellatus flowers from February to May.
Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Rhagadiolus stellatus reproduces by seed produced in large numbers.
Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Growth form
Leaf arrangement
Leaf type
Latex
Stem section
Root type
Hollow or solid stem
Stipule type
Leaf attachment type
Fruit type
Achene type
Cotyledon type
Lamina base
Lamina margin
Lamina apex
Upperface pilosity
Lowerface pilosity
Simple leaf type
Lamina section
Lamina Veination
Flower color
Inflorescence type
Stem pilosity
Stem hair type
Life form
Rhagadiolus stellatus is a C3 species.
Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Algeria: Rhagadiolus stellatus is a common messicolous species of winter annual crops (winter cereals, fallow fields, catch crops) in the north of the country. Seems indifferent to soil type, although more abundant on clayey marl.
Morocco: Rhagadiolus stellatus is a very common nitrophilous species, thriving on clay soil in pastures, wastelands, rock gardens and open forests on plains and low mountains with adequate rainfall, up to 1700 m altitude.
Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Habitat
Origin
Rhagadiolus stellatus is native to the Mediterranean basin.
Worldwide distribution
Introduced in the USA (California).
Algeria: Common throughout the Tell region.
Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Local harmfulness
Algeria: Rhagadiolus stellatus is a major weed. Rhagadiolus stellatus is one of the most damaging weeds of field crops, as it can colonize practically any ecological environment (a very frequent species). Moreover, its great adaptation to the agricultural environment and its high seed production give it a very high potential for invading plots (an abundant species whenever it is present).
Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Local control
Algeria: Rhagadiolus stellatus is controlled in cereal crops with a combination of a false-seeding cultivation method combined with a pre-emergence chemical treatment with 2,4-D, dicamba, pendimethalin, trifluralin, etc. or a post-emergence treatment with glufosinate ammonium, linuron, paraquat, metribuzin, etc.
Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Attributions | Wiktrop |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
- Kazi Tani C., Grard P. & Le Bourgeois T., 2021. "AdvenAlg 1.0 Identification et connaissance des principales adventices d'Algérie méditerranéenne." Al Yasmina, Revue de Botanique 2(3): 1-187.
- Plants of the World Online https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:241367-1
- Flora Maroccana (Dobignard A.) https://www.floramaroccana.fr/rhagadiolus-stellatus.html
- CABI https://www.cabidigitallibrary.org/doi/10.1079/cabicompendium.116698
- Kazi Tani C., Grard P. & Le Bourgeois T., 2021. "AdvenAlg 1.0 Identification et connaissance des principales adventices d'Algérie méditerranéenne." Al Yasmina, Revue de Botanique 2(3): 1-187.
- Plants of the World Online https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:241367-1
- Flora Maroccana (Dobignard A.) https://www.floramaroccana.fr/rhagadiolus-stellatus.html
- CABI https://www.cabidigitallibrary.org/doi/10.1079/cabicompendium.116698
Root | Root |
Kingdom | Plantae |
Phylum | Tracheophyta |
Class | Magnoliopsida |
Order | Asterales |
Family | Asteraceae |
Genus | Rhagadiolus |
Species | Rhagadiolus stellatus (L.) Gaertn. |