Coryphantha robbinsiorum NatureServe Explorer Species Reports — NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.
ITIS Reports — Coryphantha robbinsiorum ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.
FWS Digital Media Library — The U.S. Fish and Wildlife Service’s National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.This cactus lives mostly buried in the ground with only its top few centimeters exposed. There is a cluster of spines on each areole, surrounded by a tuft of white woolly hairs. The spines are straight and white, often with dark tips, and measure 1 or 2 centimeters long. The flower is 1 to 3 centimeters long and has greenish yellow tepals. The fruit is bright red to orange, succulent, and under a centimeter in length. The plant grows in nearly solid bedrock with little soil or sand, in full sunlight. It can be found in dense colonies of up to 1000 individuals
