Orobanchaceae
Buchnera

Buchnera lastii Engl.

First published in Pflanzenw. Ost-Afrikas, C: 359 (1895)
This species is accepted
The native range of this species is W. & SW. Tanzania to S. Tropical Africa. It is an annual or perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

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

Type
Type: Mozambique, Namuli, Makua, Last s.n. (B†, holo; K!, iso.)
Morphology General Habit
Perennial herb up to 30 cm or more tall (measurement based on 2 specimens from Flora area, up to 40 cm in F.Z area).
Morphology Stem
Stems erect, simple or branched, several arising from a woody rootstock, ± angular, minutely pubescent to glabrous
Morphology Leaves
Leaves mostly opposite, sessile, linear to linear-lanceolate, 11–24 mm long, 2–3 mm wide, apex acute, margins entire, glabrous or sometimes minutely pubescent, sparsely hispidpubescent or glabrous beneath, especially on the veins, ciliate, 1-veined
Morphology Reproductive morphology Flowers
Flowers in terminal spikes, slender, 6–30 cm long; lower flowers interrupted and arranged more laxly on spike; flowers imbricate until flowering; bracts lanceolate, 7–9 mm long, 2–3.5 mm wide, acuminate, ciliate or finely pubescent; bracteoles linear, 3–5 mm long, ± 1 mm wide, ciliate, ± pubescent
Morphology Reproductive morphology Flowers Calyx
Calyx 5-lobed, 6–9 mm, 10-veined, glabrous; lobes unequal, lanceolate, 1–2 mm long, glabrous or ciliate
Morphology Reproductive morphology Flowers Corolla
Corolla yellow to bluish purple; tube 7–8 mm long (up to 16 mm in F.Z material), slender, glabrous or with a few minute hairs, somewhat curved; limb up to 5 mm in diameter (up to 8 mm in F.Z material); lobes obovate, ± 3 mm long, thick with ± revolute margins
Morphology Reproductive morphology Fruits
Capsule oblong, 4–5 mm long, ± 2 mm broad.
[FTEA]

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

Morphology General Habit
Annual or perennial herbs, 12–40 cm. or more tall from woody rootstock, erect; stems simple or branched, with spreading branches, erect or arcuate, terete, slightly angular, minutely bifariously pubescent.
Morphology Leaves
Leaves mostly opposite, 7–35(50) x 1–4.5(8) mm., lanceolate or linear-lanceolate, sessile, acute, entire or minutely denticulate, glabrous above or sometimes minutely pubescent, glabrous or sparsely hispid-pubescent beneath especially on nerves, shortly ciliate, 1-nerved.
Morphology Reproductive morphology Inflorescences
Inflorescence of long slender spikes, (2)3.5–16(30) cm. long, not quadrangular, most flowers imbricate, but the lower frequently interrupted and arranged more laxly on spike.
Morphology Reproductive morphology Inflorescences Bracts
Bracts (5.5)7.5–9 x (1.5)2–3.5 mm., lanceolate, acuminate, ciliate or finely pubescent.
Morphology Reproductive morphology Inflorescences Bracteoles
Bracteoles 3.5–5(8) x 0.35–1 mm., linear to narrowly lanceolate, ciliate or occasionally finely pubescent.
Morphology Reproductive morphology Flowers Calyx
Calyx (5)7–9.5( 12.5) mm. long, 5-lobed, 10-nerved, glabrous; lobes (0.6)1.25–3 mm. long, unequal, lanceolate or narrowly triangular, glabrous or ciliate.
Morphology Reproductive morphology Flowers Corolla
Corolla white, cream or yellow, brown or reddish-purple, fragrant; tube 7–10(16) mm. long, cylindric, slender, glabrous or finely pubescent, gently curved throughout; limb (3)5.5–8 mm. in diam.; lobes 3.5–5(7) x 0.5–1.8 mm., obovate, sometimes thick with involute margins.
Morphology Reproductive morphology Fruits
Capsule 3.5–5 mm. or more long, 1.5–2 mm. broad, oblong.
[FZ]

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
[AERP]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Flora Zambesiaca

    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0