LEAVES: 5-15(-20) cm long, 1-2.5 cm wide, 2-6 mm thick. FLORAL STEMS: 1.5-4 dm tall, 3-6 mm thick. CYME branches 3-12 cm long, 4-12-flowered. FLOWERS: sepals 4-7 mm long; corolla 12-16(-20) mm long. 2n = 102?, 136. NOTES: Rock crevices and rocky slopes; Gila, Maricopa, Mohave, Pinal, Yavapai cos.; 450-1800 m (1500-6000 ft); Mar-Jun. REFERENCES: Moran, Reid. 1994. Bixaceae. J. Ariz. – Nev. Acad. Sci. Volume 27, 190-194.

Caudices 1.5-3 cm diam. Leaf blades 5-15 × 1-2.5 cm, 2-6 mm thick. Inflorescences: floral shoots red, 5-12-leaved, 15-40 × 0.3-0.6 cm; cincinni 4-15-flowered, 3-12 cm. Pedicels 5-20 mm. Flowers: sepals 4-7 mm; petals bright yellow, red-tinged, 12-16(-20) mm. 2n = 136. Flowering spring. Rock crevices and rocky slopes; 400-1800 m; Ariz. The well-isolated polyploid subsp. collomiae is similar to the diploid subsp. aloides, differing mainly in its larger flowers.