Diodia (or buttonweed) is a genus of flowering plants in the Rubiaceae family. It was described by Carl Linnaeus in 1753. The genus is found from southern and eastern United States, South America, Central America, Mexico, the West Indies and tropical Africa.
Other Buttonweeds
Many species of Diodia have been transferred to a closely related genus Diodella, and therefore the name Buttonweed also applies to these species. There are also many species of False Buttonweeds in the related genus Spermacoce. The Velvetleaf Abutilon (Abutilon theophrasti) in the family Malvaceae is also known by the common name of Buttonweed.
Species
- Diodia aulacosperma K.Schum. - Socotra, Somalia, Kenya, Tanzania
- Diodia barbata (Poir.) DC. - Guyana, Dominican Republic
- Diodia barbigera Hook. & Arn. - Mexico
- Diodia discolor DC. - French Guiana
- Diodia domingensis DC. - Dominican Republic
- Diodia flavescens Hiern - Angola, Zambia
- Diodia incana Aresch. - Ecuador
- Diodia kuntzei K.Schum. - Venezuela, Bolivia, Peru, Brazil, Argentina, Paraguay
- Diodia macrophylla K.Schum. - Brazil, Paraguay
- Diodia microcarpa K.Schum. - Brazil
- Diodia mitens Bello - Puerto Rico
- Diodia othonii Rizzini - Brazil
- Diodia paludosa Kuntze - Paraguay
- Diodia perforata Urb. - Haiti
- Diodia rubricosa Hiern - Ghana, Ivory Coast, Liberia, Nigeria, Sierra Leone
- Diodia saponariifolia (Cham. & Schltdl.) K.Schum.
- Diodia saponarioides C.Presl - Mexico, Brazil, Argentina, Paraguay
- Diodia simplex Sw. - Cuba, Jamaica
- Diodia spicata Miq. - Panama, Colombia, Venezuela, Guyana, French Guinea, Brazil
- Diodia vaginalis Benth. - Benin, Ghana, Ivory Coast, Liberia, Nigeria, Sierra Leone, Togo, Cameroon, Gabon, Congo-Brazzaville
- Diodia verticillata Vahl - Brazil, Lesser Antilles
- Diodia virginiana L. - Virginia Buttonweed - south-central and south-eastern United States from Texas to Kansas, east to Florida and New Jersey; also Connecticut, Cuba and Nicaragua. Naturalized in Japan, Taiwan and northern California
References
External links
- Diodia in the World Checklist of Rubiaceae
- Jepson Manual Treatment
- USDA Plants Profile
