MACDOUGALLII  Moran, 1977

Type : MacDougall B.278, Cerro de la Flores, Oaxaca.

Distribution : Mexico (Oaxaca), dry slopes, ± 1500 m.

Description (by 't Hart & Bleij in IHSP, 2003) :

Glabrous perennial subshrubs with erect to ascending somewhat branched stems, to 50 cm tall.

Leaves alternate, crowded, cuneate-obovate, thick, obtuse, subterete to nearly flat, bluish-glaucous, 13 - 36 x 9 - 21 mm, flowering branches axillary, red, glaucous, 5 - 12 cm.

Inflorescences cymes with 3 - 10 ascending, simple or bifurcate branches, bracts similar to the leaves on flowering branches but slightly narrower, pedicels  ± 1 mm.

Flowers 5-merous, sepals nearly free to the base, unequal, obovate, obtuse to rounded, glaucous, 1 - 2.5 x ± 1.5 mm, spreading, petals basally free, imbricate in bud, elliptic-ovate, obtuse, slightly carinate, shortly cucullate, slightly papillose along the dorsal keel, light yellow to greenish,  ± 3 mm, filaments greenish-yellow, anthers yellow.

Cytology : 2n = 68