Seeds of Coccinia. The lack of fibers in e and f are preparation artifacts due to mechanical removal of the hyaline aril. Maceration (coarse crushing of the fruit and soaking of the mass in water for 2–3 weeks; R. Brüggemann – pers. comm.) retains the surface fibers. Length of white bars equals 1 mm. a Seeds of C. adoensis var. jeffreyana (plant derived from seed of the same fruit: N. Holstein 130). Note the lenticular face and symmetrical shape of the seed b seeds of C. abyssinica (plant derived from seed of the same fruit: N. Holstein 120 and 132) c Seeds of C. trilobata d Seeds of C. sessilifolia (harvested by maceration) e Seeds of C. sessilifolia (harvested by mechanical extraction; taken from N. Holstein 119) f Seeds of C. grandis (harvested by mechanical extraction).