Plants 7-31 cm tall, slender, unbranched or with a few short axillary spikes, dark purple and weakly pilose to densely pubescent distally, creamy white glabrous proximally. Leaves few, 5-7 mm, narrowly to broadly ovate, glabrous. Inflorescence a spike-like raceme. Bracts narrowly lance-acuminate to lanceolate-subulate 5-10 mm, dark purple, pilose, equal to or shorter than calyx. Pedicels 0-5 mm; Calyx 6-10 mm, deeply 5 cleft, lobes linear-subulate, pilose. Corolla 12-16 mm, dark purple or lavender, lower throat white or pale lavender, glandular-pubescent, pilose, palatal folds evident, glabrous or pubescent, lower lip 4-5 mm, shallowly 3-lobed, lobes white with purple veins, spreading abruptly from base, apex acute, upper lip 3-5 mm, lobes erect, acute, erect or reflexed. Anthers glabrous or pilose, included.
Flowering Jun–Sep. rocky granitic and volcanic mt. slopes; 1200–2000 m; Calif.
Orobanche valida is distributed in two disjunct populations on a few rocky mountain slopes of granite and volcanic rock in the San Gabriel and Central North Coast Range mountains. It is parasitic on Garrya sp. and reported on Eriodictyon and Quercus.
It should be considered for the list of plants of conservation concern.