Annona rigida

It is a bush. Its rigid, oblong, yellow-green leaves are 12-20 by 3-5 centimeters, hairless and have pointed tips. Its solitary flowers are on thick, rigid pedicels that are 0.5-1 centimeter long with a 3-5 millimeter oval bract near their base. Its oval to triangular sepals are 4-5 millimeters long, recurved and come to a point at their tip. It has two rows of petals. The oval, wrinkled, warty outer petals are 3 by 2 centimeters. The outer petals have margins that touch but are not fused. The outer surface of the inner petals is covered in dense woolly hairs. Its stamen are 5 millimeters long. Its immature fruit are round with a diameter of 2–3.5 centimeters and covered in conical projections. Its flowers have numerous carpels.^[4]

The pollen of A. rigida is shed as permanent tetrads.^[5]

It grows in the Amazon rainforest.^[6]

• Annona rigida R.E.Fr. at the Global Biodiversity Information Facility

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