Flora

Erigeron canadensis L.

Family: Asteraceae

Flowering Time: Jun-Sept.

General Appearance

Erigeron canadensis L. / Homotypic Synonyms: Conyza canadensis (L.) Cronquist, it is an annual herb, up to 10-150 cm, patent-hirsute. Leaves numerous, narrow, the lower up to 10 x 1 cm, oblanceolate, petiolate, often deciduous, the others linear, at least the upper sessile. Capitula less than 1 cm wide, generally numerous, in a long, paniculate inflorescence with a single axis. Involucre 3-4 mm, glabrous or nearly so. Female florets c. 24-45; ligules 0.5-1mm; basal tube c. 1.75 mm, white. or whitish-purple. Hermaphrodite florets c. 5, corolla up 102.5 mm, 4-lobed, yellowish. Cypselas 1-1.25 mm, sparsely puberulous; pappus 2.5-3 mm, brownish-white.

Life Form

Phytochoria

Cosm. The native range of this species is New World.

Distribution in Libya

Al-Jafarah Plain:

Tripoli 1980 Sabrath 2008 Gefara plain 2010 Sabratha 2019 Sabratha region 2020

Zliten-Misurata Plain:

Kaam area 2005 Misurata 2006

Jabal Nafusa:

Misallata (Shaafeen) 2008 Msallata-Garaboulli Province 2020

Al-Jabal Al-Akhder:

Wadi Al-Agar 1999 Ain Mara 2020

Notes

Introduced in Libya, weed, invasive, noxious. It is used a medicine and for fuel and food.

Link of images: https://plants.ces.ncsu.edu/plants/erigeron-canadensis/, https://www.i-flora.com/en/image-search/phylogenetic-tree/art/showgallery/erigeron-canadensis.html

For more information

https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:203653-1, https://www.ipni.org/n/203653-1, http://www.worldfloraonline.org/taxon/wfo-0000015917, https://www.gbif.org/species/3146791, https://africanplantdatabase.ch/en/nomen/specie/101785/erigeron-canadensis-l, https://gobotany.nativeplanttrust.org/species/erigeron/canadensis/, https://www.preservons-la-nature.fr/flore/taxon/421.html, https://www.maltawildplants.com/ASTR/Erigeron_canadensis.php, https://www.actaplantarum.org/flora/flora_info.php?id=505442, https://gobotany.nativeplanttrust.org/species/erigeron/canadensis/, https://flora.org.il/en/plants/erican/, https://www.i-flora.com/en/image-search/phylogenetic-tree/art/showgallery/erigeron-canadensis.html, https://en.wikipedia.org/wiki/Erigeron_canadensis

Bibliographic References

First: Encyclopedia Flora of Libyan:

Jafri, S. M. H. & El-Gadi, A. (1983) Flora of Libya, Asteraceae Vol. (107) Department of Botany, Al-Faateh Univ., Tripoli, Libya.

Second: Researches and PhD theses, master theses, Sorted by Newest:

Al-khojah, H.M., Al-Yafour, L.A., Mahklouf, M.H. (2020) Floristic Study of Selected Districts in Sabratha region Libya. J. of Advanced Botany and Zoology Volume 7/Issue 4 ISSN: 2348-7313. https://scholar.google.com/citations?user=2s5EMysAAAAJ&hl=ar, https://www.researchgate.net/profile/Mohammed-Mahklouf

Floristic Study of Selected Districts in Sabratha region Libya. 2020.

Al-Maqsabi, F. M. & Makhlouf, M. A. (2020) Vegetation cover in the Ain Mara region, Al-Jabal Al-Akhdar region – Libya. The Libyan Journal of Science (An International Journal): Volume 23, 2020. (In Arabic) https://uot.edu.ly/journals/index.php/ljs/article/view/122, https://www.researchgate.net/profile/Farag-Elmokasabi-2

الغطاء النباتي في منطقة عين مارة بمنطقة الجبل الاخضر2020

Mahklouf, M.H., Sherif, A.S., Betelmal, A.G. (2020) Floristic Study and Species Diversity of Msallata-Garaboulli Province in Libya. J. of Advanced Botany and Zoology Volume 7 / Issue 3 ISSN: 2348-7313. https://www.researchgate.net/profile/Mohammed-Mahklouf, https://www.researchgate.net/publication/341306643_Floristic_Study_and_Species_Diverisy_of_Msallata-Garaboulli_Province_in_Libya

Floristic Study and Species Diverisy of Msallata-Garaboulli Province. 2020

Saed, Z.H. S., Abohbell, H.A., Mahklouf, M. H. (2019) Floristic Analysis of the Family Asteraceae in Sabratha city- Libya. American Journal of Life Science Researches 2019; 7(1): 18-25 Published online January, 2019.

Floristic Analysis of the Family Asteraceae in Sabratha city- Libya. 2019

Abu Ajila, A. M. K. & Ahmed, A. N. (2010) A study of the quantitative characteristics of vegetation covers in Al-Jafara plain. Libya. African J. Biol. Sci., 6 (3):111-121(2010) ISSN 1687-4870. (In Arabic).

دراسة الخصائص الكمية للغطاء النباتي بمنطقة سهل الجفارة- ليبيا. 2010

Mohammed, S.A.H. (2008) A taxonomic and ecological study of the plants of the Shaafin Reserve in Masalatah. Master Thesis. Department of Biology-Faculty of Arts and Sciences-Al-Mirqab University. Al-Khums. Libya. (In Arabic).

Al-Dana, S. M. M. (2006) Taxonomic study of wild flower plants in some areas of Misrata. Master Thesis, Department of Botany, Faculty of Science, Misurata University (7 October previously) Misurata, Libya. (In Arabic).

Al-Shif, N. S. (2005) a taxonomic study of the plants of the Kaam region. Master Thesis, College of Science, Al-Marqab University, Al-Khums, Libya. (In Arabic).

Al-Hamadi R.I. (1999) Floristic and ecological study of wadi Al-Agar, Master Thesis, Botany Department, Faculty of Science, Botany Department-Faculty of Science-Garyounis University, Benghazi, Libya. (In Arabic).