Monographs Details: Gayoides crispum (L.) Small
Authority: Britton, Nathaniel L. Flora Borinqueña.
Description:Species Description - A slender, perennial, velvety-hairy herb, with broad leaves and attractive, pale yellow, or nearly white flowers, borne solitary on very slender stalks in the leaf-axils, frequent in dry soil in the dry, southern and southwestern parts of Porto Rico, and on Mona Island, occasional elsewhere, as on sand-dunes near Santurce. It is distributed nearly throughout tropical and subtropical America, north to Florida, Texas and New Mexico, and occurs also in tropical Asia; the species was first known, botanically, from the Bahamas. We have found neither Spanish nor English popular names recorded. Gayoides (similar to Gaya, a genus of the same family) was established as a genus in 1903, by Doctor John Kunkel Small, Head Curator of the Museums and Herbarium of The New York Botanical Garden, distinguished by long-continued studies of plants of the southeastern United States, and their relationships to West Indian species. It is monotypic, only one species being known. Gayoides crispum (crisp, referring to the fruit) is usually much-branched, finely velvety, and often also long-hairy, with, slender, diffuse, or ascending branches, from 0.3 to 1 meter long. The thin, stalked, broadly ovate, deeply heart-shaped, pointed leaves are from 2 to 7 centimeters long, with scalloped margins. The flower-stalks are about as long as the leaves, or shorter, with a joint under the flower; the deeply 5-parted calyx has ovate to lance-shaped, pointed lobes from 4 to 6 millimeters long; the 5, obovate petals are about twice as long as the calyx; the stamens form a column, around the pistil; the ovary consists of numerous, 1-celled carpels, which become membranous and inflated in fruit, forming a dense cluster from 12 to 20 millimeters in diameter, each carpel containing 2 or 3, smooth seeds.

Discussion:Mallow Family Sida crispa Linnaeus, Species Plantarum 685. 1753. Abutilon crispum Medicus, Geschlechter aus den Malvenfamilie 29. 1787. Gayoides crispum Small, Flora of the Southeastern United States 764.1903.