Aerva javanica (Burm.f.) Juss. ex Schult

Common Name: Elgaab
Family: Amaranthaceae
Flowering Time: Nov-Mar

General Appearance

It is a perennial herb, frequently woody and suffruticose or growing in erect clumps, 0.3-1.5 m, branched from about the base with simple stems or the stems with long, ascending, sometimes intricate branches. Stem and branches terete, striate, ± densely whitish- or yellowish-tomentose or pannose, when dense the indumentum often appearing tufted.

Leaves

Leaves alternate, very variable in size and form, from narrowly linear to suborbicular, ±densely whitish- or yellowish tomentose but usually more thinly so and greener on the upper surface, margins plane or more or less involute (when strongly so the leaves frequently ± falcate-recurved), sessile or with a short and indistinct petiole or the latter rarely to c. 2 cm in robust plants.

Flowers

Flowers dioecious. Spikes sessile, cylindrical, dense and stout (up to c. 10 x 1 cm.), to slender and interrupted with lateral globose clusters of flowers and with some spikes apparently pedunculate by branch reduction; male plants always with more slender spikes (but plants with slender spikes may not be male) ; upper part of stem and branches leafless, the upper spikes thus forming terminal panicles; bracts 0.75-2.25 mm, broadly deltoid-ovate, hyaline, acute or obtuse with the obscure midrib ceasing below the apex, densely lanate throughout or only about the base or apex, persistent; bracteoles similar, also persistent. Female flowers with outer 2 tepals 2-3 mm, oblong-obovate to obovate-spathulate, lanate, acute to obtuse or apiculate at the tip, the yellowish midrib ceasing well below the apex; inner 3 slightly shorter, elliptic-oblong, ± densely lanate, acute, with a narrow green vitta along the midrib, which extends for about two-thirds the length of each tepal; style slender, distinct, with the two filiform, flexuose stigmas at least equalling it in length; filaments reduced, anthers absent. Male flowers smaller, the outer tepals 1.5-2.25 mm, ovate; filaments delicate, the anthers about equalling the perianth; ovary small, style very short, stigma rudimentary.

Life Form

Ch

Phytochoria

SA+SZ, The native range of this species is Africa to Myanmar.

Distribution in Libya

  • (15 km) from Ghat 1976 Wadi Aghage , (70 km) from Ghat towards Algerian border 1977 Ghat (Between Acacus and Tassili Mountains) 2004 Wadi Tanezzuft 2012.
  • Kurkur Ibrahim, Gebel Uweinat 1968 Jabal Al-Uweinat region 2008.

Notes

Wild in Libya.

First: Encyclopedia Flora of Libyan:

  1. Jafri, S. M. H. & El-Gadi, A. (1977) Flora of Libya, Amaranthaceae Vol. (42) Department of Botany, Al-Faateh Univ., Tripoli, Libya.

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

  1. Mukassabi, T.A, Ahmidat, G., Sherif, I.M., ELMogasapi, A.(2012) Checklist and life forms of plant species in contrasting climatic zones of Libya. Biological Diversity and Conservation – 5 / 3 (2012) https://bit.ly/42hptsN , https://dergipark.org.tr/en/pub/biodicon/issue/55888/765799
  2. Alzwai, A.M.H. (2008) A study of the vegetation covers of the Jabal Al-Uweinat region in Libya. Master Thesis – Botany Department – College of Science – Garyounis University – Libya. (In Arabic)
  3. Ahmidat, Gh. (2004) Study of the vegetation cover of the area between the Acacus Mountains and the Tassili Mountains (Ghat). Master Thesis. Department of Botany.College of Science. Sebha University. Libya. (In Arabic)

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