Buchnera ruwenzoriensis Skan

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

Morphology General Habit

Annual herbs, (10)30–65 cm. tall, erect; stems simple or occasionally branched above, patent to retrorse hispid-pilose.

Morphology Leaves

Leaves: cauline 18–40 x 2.5–5 mm., opposite or subopposite, lanceolate, acute or obtuse, entire, somewhat densely longpilose to hispid-pilose above, more sparsely so beneath; basal leaves 25–30 x 8–12 mm., elliptic to oblong, obtuse, entire to sparsely dentate, 3–5-nerved, scabrid above, pilose beneath mainly on nerves.

Morphology Reproductive morphology Inflorescences

Spikes 10–26(30) mm. long, quadrangular, terminal or lateral, with flowers dense, compact.

Morphology Reproductive morphology Inflorescences Bracts

Bracts 3–5.5 mm. long, up to 1.75 mm. wide, lanceolate to ovate-lanceolate, upper at least with the apices bi or trifid, hispid to hispid-scabrid.

Morphology Reproductive morphology Inflorescences Bracteoles

Bracteoles absent.

Morphology Reproductive morphology Flowers Calyx

Calyx 4–4.5 mm. long, 5-lobed, 10-nerved, densely long, soft pilose; lobes 0.6–1.25 mm. long, lanceolate, uneven, frequently with one lobe very much shorter.

Morphology Reproductive morphology Flowers Corolla

Corolla blue to purple, or white; tube c. 5 mm. long, pubescent without above; limb 1.6–2.25 mm. in diam.; lobes 1–1.3 x c. 1 mm., obovate to circular, margins slightly involute or crenate when dry.

Morphology Reproductive morphology Fruits

Capsule 4.5–5 x 2 mm., cylindric-ovoid.

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

Type

Type: Uganda, Ruwenzori, hillsides below 2133 m [7000 ft.], Scott-Eliot 7782 (K!, lectotype chosen here)

Morphology General Habit

Annual, (10–)30–65 cm tall.

Morphology Stem

Stems erect, simple or occasionally branched above, patent to subappressed hispid-pilose

Morphology Leaves

Leaves cauline, opposite or subopposite, narrowly linear-lanceolate, 18–40 mm long, 2.5–5 mm wide, apex acute or obtuse, margins entire, somewhat densely long pilose to hispid-pilose above, more sparsely so beneath, obscurely 1–3-veined being tightly inrolled when dried; lower and basal leaves elliptic to oblong, 25–35 mm long, 8–12 mm wide, obtuse, entire to sparsely crenate-dentate, scabrid above, hispid-pilose beneath mainly on veins, 3–5-veined

Morphology Reproductive morphology Inflorescences

Spikes terminal or lateral, quadrangular, with flowers dense, compact, 10–26(–30) mm long; bracts lanceolate to ovate-lanceolate, 3–5.5 mm long, up to 1.8 mm wide, upper at least with the apices bi- or trifid, hispid to hispid-scabrid; bracteoles absent

Morphology Reproductive morphology Flowers Calyx

Calyx 5-lobed, 4–4.5 mm long, 10-veined, densely long, soft pilose; lobes lanceolate, 0.6–1.3 mm long, uneven, frequently with one lobe very much shorter

Morphology Reproductive morphology Flowers Corolla

Corolla blue to purple, or white; tube ± 5 mm long, externally pubescent; limb 1.6–2.3 mm in diameter; lobes obovate to circular, 1–1.3 mm long, ± 1 mm wide, margins slightly involute or crenate when dry

Morphology Reproductive morphology Fruits

Capsule cylindric-ovoid, 4.5–5 mm long, 2 mm broad.

Ecology

Rocky or grassy slopes, often on clayey soils; 1200–1900 m

Conservation

Least Concern (LC)

Distribution

Range: Angola, Zambia