Oreoloma matthioloides (Franch.) Botsch.

The record of Oreoloma matthioloides in FRPS (as Sterigmostemum matthioloides) from Xinjiang is based on misidentified plants of O. violaceum.

Herbs 15-45 cm tall, densely tomentose and glandular throughout; caudex slender, often branched. Stems simple from caudex, often branched above. Basal leaves with petioles (0.5-)1-3 cm; leaf blade lanceolate in outline, 2-7 × 0.8-3 cm, margin pinnatifid or pinnatisect, rarely sinuate-dentate, apex subacute; lateral lobes to 5 on each side of midvein, oblong or ovate, (1-)2-10(-20) cm × (0.5-)1-4(-6) mm. Cauline leaves many, shortly petiolate, pinnatifid or sinuate-dentate. Fruiting pedicels stout, slightly narrower than fruit base, 2-3(-5) mm, divaricate. Sepals narrowly oblong, (6-)7-8 × 1.2-1.7 mm. Petals pink, creamy white, or yellowish, spatulate, 1.4-1.8 cm × 3-4(-5) mm; claw 7-10 mm. Median filaments 5-6(-7) mm, connate along 0.5-0.8 of their length; lateral filaments 3-4(-5) mm; anthers narrowly oblong, 2-2.5 mm. Ovules 8-14 per ovary. Fruit cylindric or oblong, (1-)1.5-3(-4) cm × 2-4 mm, straight, widest at base, narrower at apex; style obsolete or to 1.5 mm; stigma capitate, subentire or with obscure lobes as long as wide. Seeds oblong, brown, 2-2.7 × 1-1.3 mm. Fl. and fr. Jun-Aug.

Nei Mongol, Ningxia, Qinghai.

* Valleys, rocky places, sandy and gravelly slopes; 1400-2000 m.

Dontostemon matthioloides Franchet, Pl. David. 1: 35. 1883; Sterigmostemum matthioloides (Franchet) Botschantzev.