Striga passargei Engl.

Scrophulariaceae, S.A. Ghazanfar, F.N. Hepper & D. Philcox. Flora of Tropical East Africa. 2008

Type

Type: Cameroon, Jola, Passarge 48 (B†, holo.)

Morphology General Habit

Annual herb, 10–40 cm high.

Morphology Stem

Stems simple or branched, somewhat succulent, slightly 4-angled, scabrid, drying black

Morphology Leaves

Leaves few on lower half of stem, ascending, narrowly elliptic, 10–45 long, 1–3 mm wide

Morphology Reproductive morphology Flowers

Flowers opposite or alternate, in long lax spikes, only two flowers at same node open per inflorescence branch; bracts much larger than leaves, linear, up to 5 cm long and 4 mm wide, often recurved; upper bracts as long as or longer than the calyx; bracteoles subulate, shorter than calyxtube

Morphology Reproductive morphology Flowers Calyx

Calyx in flower ± 8 mm long, 1.5 mm diameter, enlarging in fruit, 5-ribbed; teeth subulate, up to half as long as the tube and spreading in fruit, ribs scabrid, hyaline in between

Morphology Reproductive morphology Flowers Corolla

Corolla white (rarely yellow or pinkish), tube 10–17 mm long, finely glandular-pubescent outside, throat hairy; upper lobe emarginate or bilobed, 2–5 mm long, 2–4 mm wide, reflexed; lower lobes spreading, 2–7 mm long, 1.5–4 mm wide

Morphology Reproductive morphology Fruits

Capsule ovoid, 8–13 mm long, 2 mm wide.

Ecology

Secondary Acacia woodland, by roadside, rocky places, parasitic on Urochloa and other grasses; 100–1450 m

Conservation

Least Concern (LC); common and widespread

Distribution

Range: SW Arabia Range: Senegal, Ghana, Nigeria, Cameroon, Sudan Flora districts: T1 T4 T8

Scrophulariaceae, D. Philcox. Flora Zambesiaca 8:2. 1990

Morphology General Habit

Plant annual 10–40 cm. tall, simple or branched, stems somewhat succulent, scabrid, slightly quadrangular.

Morphology Leaves

Leaves few on lower half of stem, c. 10 x 1 mm.

Morphology Reproductive morphology Inflorescences Bracts

Bracts much larger than leaves, up to 5 x 4 mm., of ten recurved.

Morphology Reproductive morphology Flowers

Flowers opposite or alternate, only two flowers at same node open per inflorescence branch.

Morphology Reproductive morphology Inflorescences Bracteoles

Bracteoles subulate, shorter than calyx tube.

Morphology Reproductive morphology Flowers Calyx

Calyx in flower c. 8 mm. long, 15 mm. in diam.; enlarging in fruit, subulate teeth up to half as long as the tube; lower portion connivent, upper spreading in fruit, nerves scabrid, hyaline between nerves.

Morphology Reproductive morphology Flowers Corolla

Corolla cream-white or pale yellow, 10–17 mm. long, finely glandular-pubescent outside, throat hairy. Upper lobe emarginate or bilobed, 2–5 x 2–4 mm., reflexed, lower lobes spreading 2–7 x 1.5–4 mm.

Morphology Reproductive morphology Fruits

Capsule ovoid, 8–13x2 mm.

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation

Predicted extinction risk: not threatened. Confidence: confident