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Calendula aegyptiaca, Calendula alata, Calendula bicolor, Calendula brachyglossa, Calendula byzantina, Calendula ceratosperma, Calendula cristagalli, Calendula echinata, Calendula gracilis, Calendula karakalensis, Calendula macroptera, Calendula malacitana, Calendula malvaecarpa, Calendula micrantha, Calendula parviflora, Calendula persica, Calendula platycarpa, Calendula repanda, Calendula sancta, Calendula sicula, Calendula sinuata, Calendula stellata, Calendula subinermis, Calendula sublanata, Calendula sylvestris, Calendula undulata, Caltha arvensis, Caltha graveolens
Field Marigold, hanwa
Calendula arvensis is a species of flowering plant in the daisy family known by the common name field marigold. It is native to central and southern Europe, and it is known across the globe as an introduced species. It is an annual herb not generally exceeding 15 centimeters in height. The leaves are lance-shaped and borne on petioles from the slender, hairy stem. The inflorescence is a single flower head up to 4 centimeters wide with bright yellow to yellow-orange ray florets around a center of yellow disc florets. The fruit is an achene which can take any of three shapes, including ring-shaped, that facilitate different methods of dispersal.
Calendula arvensis, also known as field marigold, is an annual herb native to Europe and Western Asia. In Qatar, it has been naturalized and can be found growing in fields, roadsides, and waste areas. It is a small, upright plant with bright yellow or orange flowers and pinnately divided leaves. Studies have reported its presence in various regions of Qatar, including the Doha area and northern parts of the country. The plant typically blooms from December to May, taking advantage of Qatar's mild winter season. Its adaptability to different environments has allowed it to thrive in the country's arid climate.
Field Marigold (Calendula arvensis, Calendula micrantha, local name hanwa) growing in a silty depression on roadside of a road to Zubara in Al Magdah farms area, in north-western Qatar, February 22, 2014
Al Ghuwairiya HC St, Al-Ghuwayriyah, Qatar
Flowers and seeds of Field Marigold (Calendula arvensis, Calendula micrantha, local name hanwa) on roadside of a road to Zubara in Al Magdah farms area, in north-western Qatar, February 22, 2014Al Ghuwairiya HC St, Al-Ghuwayriyah, Qatar
Flowers of Field Marigold (Calendula arvensis, Calendula micrantha, local name hanwa) on roadside of a road to Zubara in Al Magdah farms area, in north-western Qatar, February 22, 2014Al Ghuwairiya HC St, Al-Ghuwayriyah, Qatar
Seeds with flowers of Field Marigold (Calendula arvensis, Calendula micrantha, local name hanwa) on roadside of a road to Zubara in Al Magdah farms area, in north-western Qatar, February 22, 2014Al Ghuwairiya HC St, Al-Ghuwayriyah, Qatar
Field Marigold (Calendula arvensis, local name hanwa) near Al Khor Hospital. Qatar, January 9, 2015Unnamed Road, Qatar
Seeds of Field Marigold (Calendula arvensis) taken from roadside near Al Khor Hospital. Qatar, January 9, 2015
Flower and seeds of Field Marigold (Calendula arvensis) taken from roadside near Al Khor Hospital. Qatar, January 9, 2015
Field Marigold (Calendula arvensis, local name hanwa) on roadside of a road from Dukhan to Al Jumayliyah. Western Qatar, January 30, 2015Unnamed Road, Qatar
Field Marigold (Calendula arvensis, Calendula micrantha, local name hanwa) on a roadside near Zubara. North-western Qatar, January 16, 2016Unnamed Road, Qatar
Blooming Field Marigold (Calendula arvensis, Calendula micrantha, local name hanwa) on a roadside near Zubara. North-western Qatar, January 16, 2016Unnamed Road, Qatar
Flowers of Field Marigold (Calendula arvensis, Calendula micrantha, local name hanwa) on a roadside near Zubara. North-western Qatar, January 16, 2016Unnamed Road, Qatar
Plant of Field Marigold (Calendula arvensis, Calendula micrantha, local name hanwa) on a roadside near Zubara. North-western Qatar, January 16, 2016Unnamed Road, Qatar
Field Marigold (Calendula arvensis, Calendula micrantha, local name hanwa) on roadside of a road to Zubara in area of Al Magdah farms. Northern Qatar, January 29, 2016Unnamed Road, Qatar
Flowers of field Marigold (Calendula arvensis, Calendula micrantha, local name hanwa) on roadside of a road to Zubara in area of Al Magdah farms. Northern Qatar, January 29, 2016Unnamed Road, Qatar
Plant of field Marigold (Calendula arvensis, Calendula micrantha, local name hanwa) on roadside of a road to Zubara in area of Al Magdah farms. Northern Qatar, January 29, 2016Unnamed Road, QatarField Marigold (Calendula arvensis) was observed growing in various locations in Qatar, including silty depressions and roadsides. The plant was found in north-western Qatar, near Al Khor Hospital, and on roads from Dukhan to Al Jumayliyah. Observations were made between February 2014 and January 2016, with the plant blooming during this time. Flowers and seeds were present, with some observations noting the plant's growth in areas with specific soil conditions. The local name for the plant is "hanwa". The plant was often found on roadsides, suggesting it can thrive in disturbed areas. Multiple observations were made in the Al Magdah farms area, indicating the plant's presence in this region. Overall, the Field Marigold appears to be a widespread and adaptable species in Qatar.
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QNHG (Qatar Natural History Group) and associated people, for a possibility to participate in their field excursions and to learn about local nature.