|Spineless, spreading, deciduous shrub. Grows to 6 feet tall and 8 feet wide. Dark green, aromatic leaves are toothed, round to ovate, 3 to 5 lobed, toothed and heart-shaped at the bases, to 2 inches in length. Dense, red, yellow-throated, tubular flowers are held in pendent racemes, 3 inches in length. Not known to bear fruit. R. x gordonianum is a cross between R. petraeum and R. sanguineum.