Nanorrhinum heterophyllum (Schousb.) Ghebr.

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit

Perennial herb or subshrub, glabrous or scabrid, often sparsely tomentose below or densely eglandular-pubescent throughout, with hairs up to 0.5 mm long

Morphology Stem

Stem (3–)25–85(–400) cm long, varying from erect, stout, and sometimes somewhat spinescent to prostrate or scandent to ascending and ± slender

Morphology Leaves

Basal leaves linear to broadly ovate, 4–25 x 1.5–14 mm, obtuse to acute at the apex, entire or occasionally dentate, cuneate or rounded at the base, caducous, petiole 1.2–11 mm long; upper leaves linear to suborbicular, (1.2–)3–40 x (0.4–)1.5–12 mm, acute to obtuse at the apex, entire, attenuate, cuneate, hastate, sagittate or rounded at the base, sometimes absent, petiole 0–16 mm long, often twining

Morphology Reproductive morphology Flowers Pedicel

Pedicels 4–24 mm long, straight except for curved tip

Morphology Reproductive morphology Flowers Calyx

Calyx-lobes 2.5–6 x 0.6–1.6 mm, linear-lanceolate to ovate, acute or acuminate, with scarious margins, glabrous or sparsely glandular-pubescent

Morphology Reproductive morphology Flowers Corolla

Corolla (13–)15–28 mm long, yellow, sometimes suffused with pink or purple and with purple spots on the palate, glabrous to sparsely eglandular- or glandular-pubescent outside; tube (2–)4–9 mm broad at mouth; palate lanate; spur (8–)10–22 mm long, more or less continuing line of tube, straight or curved, exceeding rest of corolla

Morphology Reproductive morphology Flowers Androecium Stamens Filaments

Abaxial filaments lanate

Morphology Reproductive morphology Fruits

Capsule 2.5–6 mm long, oblong-ovoid to subglobose, truncate or emarginate, sometimes glandular-puberulent; cells equal, many-seeded, dehiscent

Morphology Reproductive morphology Seeds

Seeds 0.5–0.7(–1) mm long, oblong-ovoid to oblong-reniform, echinate-tuberculate, reddish-brown; tubercles subglobose or conical, rounded to acute, entire to papillate.

Distribution

N1–3; Djibouti, Eritrea, Ethiopia, Sudan, North Africa, Canary Is., Arabia

Ecology

Altitude range 0–900 m.

Note

The plants in the Flora area vary from almost leafless with erect stems to leafy with ascending and flexuous stems. This variation is to a large extent environmentally conditioned. The basal leaves are generally ovate to elliptic in shape and larger in size, whereas the upper leaves are linear or lanceolate and often have a hastate or sagittate base.