Common name:
Ribbed false pennyroyal
Family:
Scientific name:
Hedeoma costata
Main flower color:
Range:
Small area of south Arizona, south New Mexico and west Texas
Height:
Up to 2 feet
Habitat:
Rocky places; slopes and canyons, from 2,000 to 8000 feet
Leaves:
Ovate, hairy, toothed, on short stalks
Season:
March to May
Hedeoma costata has limited distribution; in west Texas, mainly in Brewster County, in a tiny area of southeast Arizona and, in south New Mexico, where it is most widespread across the Capitan Formation, seen in the Carlsbad Caverns and Gualdaupe Mountains national parks.
Plants are relatively small, 1 to 2 feet, with clustered, leafy stems. Leaves are dark gray-green, or purplish, coarsely toothed. Flowers form at the upper leaf nodes. The calyx, green to purple, is divided towards the top into a three-lobed upper lip and two-lobed lower lip; all lobes are narrow and pointed. The calyx is covered by relatively long, spreading white hairs. The pink, tubular corolla is three to four times as long as the calyx; it has a three-lobed lower lip and an unlobed upper lip, the lobes marked by purple lines. The outer surface of the corolla is also hairy, the hairs much shorter than on the calyx.
Plants are relatively small, 1 to 2 feet, with clustered, leafy stems. Leaves are dark gray-green, or purplish, coarsely toothed. Flowers form at the upper leaf nodes. The calyx, green to purple, is divided towards the top into a three-lobed upper lip and two-lobed lower lip; all lobes are narrow and pointed. The calyx is covered by relatively long, spreading white hairs. The pink, tubular corolla is three to four times as long as the calyx; it has a three-lobed lower lip and an unlobed upper lip, the lobes marked by purple lines. The outer surface of the corolla is also hairy, the hairs much shorter than on the calyx.
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