MORANENSE Kunth, 1823
Distribution : Mexico (C Mexican Plateau, E Trans-Mexican Volcanic Belt)
Description (by ‘t Hart & Bleij in IHSP, 2003) :
Perennial subshrubs with decumbent or procumbent stems.
Stems much-branched, spreading, becoming brown and dark red when aging, to 20 cm tall.
Leaves alternate, ovate or lanceolate, obtuse or truncate, sometimes papillose, shortly spurred, green, frequently red-tipped, 2 – 6.7 x 1.2 – 2.8 mm.
Flowering branches erect or ascending.
Inflorescences cymes with 1 (sometimes 2) branches.
Flowers 5- (to 7-) merous, sessile or subsessile, sepals basally free, broadly spurred, unequal, ovate or lanceolate, obtuse, with scarious margins, 2.4 – 2.6 x 0.7 – 1.2 mm, suberect, petals basally connate, lanceolate, acute or obtuse, mucronate, carinate, white with slightly green or reddish keel, 4.5 – 5.8 x 1.3 – 1.6 mm, suberect, anthers red or purple.
Cytology : 2n = 42,48, 76, 80, 100, 104, 108, 1114, 120, 126, 144, 154, 200, 280,
306.
Two subspecies :