(Photograph = Coryphantha sulcata, John Weiser)
Introduction
Coryphantha sulcata is found in central TX to near OK. It also occurs south to Mexico. It is a small easy-to-care-for plant that will grow happily in a flower-pot and which tolerates too much water–especially if provided excellent drainage.
The Details
C. sulcata grows as single stems or as a multi-branched plant. Clumps can be up to 15-inches across but are usually smaller.
The Flora of North America reports that the plant can be misidentified as C. (Escobaria) missouriensis:
From Austin, Texas, eastward, Coryphantha sulcata has converged on the morphology of the sympatric C. missouriensis; the vegetative resemblance between these two species sometimes is nearly perfect, and numerous misidentifications occur in the literature.
C. sulcata makes a cheerful plant with its medium-yellow flowers.
Additional Reading: Coryphantha sulcata
