Sesame - Botany. 1  Sesame is an annual plant growing 50 to 100 cm (1.6 to 3.3 ft) tall, with opposite leaves 4 to 14 cm (1.6 to 5.5 in) long with an entire margin; they are broad lanceolate, to 5 cm (2 in) broad, at the base of the plant, narrowing to just 1 cm (0.4 in) broad on the flowering stem.
Canvas is an extremely durable plain-woven fabric used for making sails, tents, marquees, backpacks, and other items for which sturdiness is required. It is also popularly used by artists as a painting surface, typically stretched across a wooden frame.
Gesso is a thick white pigment designed to cover untreated and unprimed canvas. The gesso has two purposes. The first is to cover the unprimed canvas so that the paint you apply does not bleed through the canvas.The second purpose is to 'smooth out' the painting surface so that your canvas will have a smooth painting area to work on. Untreated canvas is rough and very porous.esso is a thick white pigment designed to cover untreated and unprimed canvas. The gesso has two purposes. The first is to cover the unprimed canvas so that the paint you apply does not bleed through the canvas.