Crusea (common name saucer flower)USDA plants profile, Crusea diversifolia is a genus of angiosperms (flowering plants) in the family Rubiaceae.Diederich Franz Leonhard von Schlechtendal & Ludolf Karl Adelbert von Chamisso. 1830. Linnaea 5(1): 165 The genus is found in the south-western United States (Arizona and New Mexico), Mexico, and Central America. A few species are naturalized in Cuba and Puerto Rico.Davidse, G., M. Sousa Sánchez, S. Knapp & F. Chiang Cabrera. 2012. Rubiaceae a Verbenaceae. 4(2): i–xvi, 1–533. In G. Davidse, M. Sousa Sánchez, S. Knapp & F. Chiang Cabrera (eds.) Flora Mesoamericana. Missouri Botanical Garden Press, St. Louis.
Species Crusea andersoniorum Lorence – Oaxaca Crusea calcicola Greenm – San Luis Potosí, Querétaro, Guerrero, Oaxaca, Honduras Crusea calocephala DC. – widespread from Tamaulipas to Honduras Crusea coccinea DC. Crusea coccinea var. breviloba Loes. – from Sinaloa to Guatemala and Belize Crusea coccinea var. chiriquensis W.R.Anderson – Costa Rica and Panama Crusea coccinea var. coccinea – from Jalisco to Oaxaca Crusea coronata B.L.Rob. & Greenm. – from Sonora to Oaxaca Crusea diversifolia (Kunth) W.R.Anderson – widespread from Arizona and New Mexico to Guatemala Crusea hispida (Mill.) Rob. Crusea hispida var. grandiflora (Paul G.Wilson) W.R.Anderson – Guerrero, México State, Distrito Federal Crusea hispida var. hispida – widespread across much of Mexico and naturalized in Cuba Crusea longiflora (Roem. & Schult.) W.R.Anderson – widespread across much of Mexico and naturalized in Puerto Rico Crusea lucida Benth. – Sonora, Sinaloa, Jalisco, Nayarit, Colima, Michoacán, Guerrero Crusea megalocarpa (A.Gray) S.Watson – widespread across much of Mexico Crusea parviflora Hook. & Arn. – widespread across much of Mexico, south to Nicaragua Crusea psyllioides (Kunth) W.R.Anderson – widespread across much of Mexico Crusea pulcherrima Borhidi & Salas-Mor. – Oaxaca Crusea setosa (M.Martens & Galeotti) Standl. & Steyerm. – widespread across much of Mexico, south to Nicaragua Crusea wrightii A.Gray Crusea wrightii var. angustifolia W.R.Anderson – central and southern Mexico Crusea wrightii var. wrightii – widespread across much of Mexico, north into Arizona
References
External links Crusea in the World Checklist of Rubiaceae Vascular Plants of the Gila Wilderness, Western New Mexico University Irekani, Universidad Nacional Autónoma de México Gardening Europe Photo of herbarium specimen at Missouri Botanical Garden, isotype of Crusea wrightii var. angustifolia, collected in Guerrero