A deciduous, North American species that grows in the mountains of Arizona, New Mexico and into Mexico. In this dry climate, it is able to survive in seepages and moist cliff edges. Distinguished by the lines of farina on the calyx, giving a striped appearance. Leaves lanceolate to spathulate, efarinose, indistinctly petiolate and with a evenly dentate margin. Flowers 4-12 per scape, heterostylous, rose-magenta with a yellow eye ringed in darker crimson.
P. ellisiae was described from individual plants from the Sandia Mountains, New Mexico based on longer calyx lobes in relation to the tube and a larger sized seed capsule. These characteristics vary within populations and according to the Flora of North America “preliminary genetic analyses (S. Kelso and P. Beardsley, unpubl.) reveal no substantive genetic distinction between these individuals and those from elsewhere in the range”. The name “Primula ellisiae” persists in cultivation but should be corrected to Primula rusbyi. If you have images of this species from Mexico (or Guatemala), please contact the webmaster.