tuberculate

Calyx, 5 rounded sepals, tuberculate at the base, imbricated, caducous.

From The Medicinal Plants of the Philippines by Jerome Beers Thomas

Also, it is the least tuberculate species in the genus.

From A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus by William E. Duellman

Many coarse hairs unite to form coarse tufts which are stouter and nearly erect toward the base of the cap, and give the surface a tuberculate appearance.

From Studies of American Fungi. Mushrooms, Edible, Poisonous, etc. by George Francis Atkinson

Plant 1–2° high, with branches and umbels diffusely spreading, the very slender rays ½–1´ long and the longer pedicels often 3–6´´ long; fruit tuberculate, ½´´ long.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Fruit bristly or tuberculate, with rather prominent equal ribs.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray