1. Citrullus lanatus (Thunb.) Matsumura & Nakai (1916: 30, no. 854) (Fig. 3) Basionym:— Momordica lanata Thunberg (1794: 13). Synonyms:— Cucumis citrullus Ser. in De Candolle (1828: 301). Citrullus vulgaris Schrad. in Ecklon & Zeyher (1836: 279). Citrullus edulis Spach (1838: 214). Local Name: —Ikpan mbakara (Annang), Ikon mbakara (Ibibio). Common Name: —Watermelon. Habitat: —Cultivated farmland. Description:— Herb, trailing, can be pendant. Stem herbaceous, trailing, angular, pubescent, 0.5–0.7 cm diam.; tendrils 2-fid. Leaves simple, alternately arranged, petiolate, glabrous, palmately lobed with 5 lobes, green; petiole cylindrical, herbaceous, 4–7 cm long. Inflorescence solitary or axillary, emanating from leaf node, pedunculate, peduncle 2–3 cm long, pubescent. Flowers pentamerous, calyx with 5 sepals, pubescent; corolla with 5 petals, yellow, 1.5–2 cm long. Fruit pepos, circular, cylindrical, irregular, green, sometimes with patches of deep green or deep green strands, with many seeds borne in reddish pulp. Seed flat, black, 0.8 × 0.4 cm. Location in Akwa Ibom:— Essien Udim, Oruk Anam, Uyo, and Ibesikpo Asutan. Abundance:— It existed in 27% of the sampling points and was rare.

Published as part of Umoh, Omodot Timothy & Bassey, Margaret Emmanuel, 2021, Morphology and distribution of species of the family Cucurbitaceae in Akwa Ibom State, Nigeria, pp. 107-128 in Phytotaxa 508 (2) on page 112, DOI: 10.11646/phytotaxa.508.2.1, http://zenodo.org/record/5425837