Journal of Agriculture & Life Sciences

Vegetative Anatomy of Galinsoga parviflora Cav. (A Newly Recorded Genera in Jazan Region, KSA)
El-Shabasy A. 1; Al-Gifri A.N.

Abstract
The present study examined the anatomical features of the stem and petiole besides measurements of the leaf epidermal cells and stomata of Galinsoga parviflora Cav. belonging to Asteraceae family which is regarded as a newly recorded genera in Jazan region, KSA. The stem had a primary structure. It has 11 closed collateral vascular bundles. The petiole is un-stratified with glabrous papillomatous cells with a laminar collenchyma composed of 2 cell layers. There are multiseriate non-glandular trichomes on the epidermis. Stomata are anisocytic which are surrounded by a girdle of three subsidiary cells. Stomata frequency was 20-24 and stomata index was 26.82.In general anatomical charecteristics are very important and could be used in diagnostic key of taxa at all taxonomic levels.

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