Orthocarpus tolmiei

Hooker & Arnott

Bot. Beechey Voy., 379. 1839.

Endemic
Treatment appears in FNA Volume 17. Treatment on page 684. Mentioned on page 681.

Annuals 10–35 cm. Stems erect, scabrous and sparsely puberulent. Leaves 15–50 mm; blade margins entire. Inflorescences spikes or racemes, 2–15 cm; bracts 10–20 mm, margins entire or 3-lobed in proximal 1/2, proximal resembling distal leaves, midlobe yellow-green to purple distally, narrowly triangular, 0.7–1 mm wide, apex acute, not cuspidate, lateral lobes linear to narrowly triangular. Pedicels 0–2 mm. Flowers: calyx 4–8 mm; corolla 10–17 mm, longer than bracts, abaxial lip conspicuously inflated, lobes 3, triangular, adaxial lip yellow or purple-pink, 4–5 mm, 1–2 mm longer than abaxial, glabrous or puberulent, tip notably hooked, not bearded. Capsules 4–6 mm, apex retuse. Seeds 3–6, light brown, narrowly ellipsoid, 1.8–2.5 mm, shallowly reticulate, not ridged. 2n = 14.

Discussion

Orthocarpus tolmiei is similar to both O. luteus and O. purpureoalbus but usually can be distinguished by its highly branched stems.

Subspecies 2 (2 in the flora).

Selected References

None.

Key

1 Corollas yellow, adaxial lips sparsely puberulent; calyces glabrous or sparsely glandular-puberulent. Orthocarpus tolmiei subsp. tolmiei
1 Corollas purple-pink, adaxial lips puberulent; calyces densely glandular-puberulent. Orthocarpus tolmiei subsp. holmgreniorum