Mat-forming perennial herb from a woody base; stems numerous, glabrous, slender, mostly prostrate, branching, 1-5 cm long, green; leaves ovate-elliptic, 1.5-4 mm long, slightly fleshy; flowers 1 or 2, at the ends of branches, rose-purple and white; pedicels at maturity recurved and nodding, 2 mm long; wing petals broadly ovate, 4 mm long and 2.5 mm wide; keel petal, pouch-shaped, 3 mm long, obscurly beaked or beak lacking, greenish yellow; capsule broadly oval, 2 mm long, sparingly covered with short incurved hairs; seeds silvery pubescent, aril forming a glabrous knob on one end. Flowers June through September.
The prostrate, green, glabrous, nonglandular stems of Polygala rimulicola readily distinguish it from other New Mexican species in the genus. Its nearly beakless keel petal separates it from P. rimulicola var. mescalerorum.
New Mexico, Eddy County, Guadalupe Mountains; adjacent Texas, Sierra Diablo and Guadalupe mountains.
Crevices in limestone cliffs in montane scrub to lower montane coniferous forest; 1,550-2,400 m (5,000-8,000 ft).
The rugged, inaccessible nature of this plant's habitat protects it from any impacts of land use.
*New Mexico Native Plants Protection Advisory Committee. 1984. A handbook of rare and endemic plants of New Mexico. University of New Mexico Press, Albuquerque.
Steyermark, J.A. 1932. Some new spermatophytes from Texas. Annals of the Missouri Botanical Garden 19:289-395.