Morphological and Palynological Study of Eucalyptus Erythrocorys Grown Western Iraq

Abstract

This trial first time to describe the morphology and palynology of Eucalyptus erythrocorys (Red-cap Gum) in Iraq, a tree endemic to Western Australia. In this research study, we will examine the vegetative and reproductive organs, pollen morphology and fruit and seed, while giving descriptions that were made based on field and herbarium studies, and palynological analysis will be based on measurements made using a light microscope. Results illustrated that Eucalyptus erythrocorys is a small tree or large shrub, typically 3–8 (–14) m tall. Leaves are aromatic, lanceolate to sickle-shaped. The inflorescences are axillary and single, with peduncles measuring 1.2–3 cm. Buds are arranged in three parts, with 0.2–1 cm pedicel. The fruit is broadly campanulate, pedicellate (0–1 cm), 2.8–4 cm long, 3–5.5 cm wide, and four-lobed. The disc is ascending with 3–4 enclosed valves. Seeds are dull brown to black, obliquely pyramidal, 2–4 mm long. The pollen grains of Eucalyptus erythrocorys were characterized as oblate in shape, with a polar/equatorial (P/E) axis ratio of 0.72 (ranging from 0.70 to 0.74), referring to a broader equatorial diameter compared to the polar length. This study stands originally with SDG 15 (Life on Land) and SDG13 (Climate action) by enhancing biodiversities conservations and sustainable exploitation of Eucalyptus genotypes via morphological and palynological description.