Stemodia serrata (Hochst.) Benth.

First published in A.P.de Candolle, Prodr. 10: 381 (1846)
This species is accepted
The native range of this species is W. Tropical Africa to NW. Ethiopia and Zambia, Madagascar, India. It is an annual and grows primarily in the seasonally dry tropical biome.

Descriptions

Scrophulariaceae, F. N. Hepper. Flora of West Tropical Africa 2. 1963

Morphology General Habit
An erect, much branched viscid glandular-pubescent aromatic herb, 6-12 in. high
Morphology Reproductive morphology Flowers
Flowers yellow or white.
[FWTA]

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

Morphology General Habit
Erect, much-branched herb, 15–35 cm. tall, strongly viscid, foetid, glandular-pubescent throughout to varying degrees.
Morphology Leaves
Leaves 15–50 x 6–20 mm., oblong to lanceolate, acute or obtuse, narrowed at base or broader, semi-amplexicaul, coarsely serrate.
Morphology Reproductive morphology Inflorescences
Inflorescence with flowers crowded into leafy spike-like raceme; pedicels about 1 mm. long; bracts 2, to about 3.25 x 0.2 mm., somewhat ciliate, narrowly linear.
Morphology Reproductive morphology Flowers Calyx
Calyx 4.5–6.5 mm. long, lobes 3.5–5.5 x 0.5–1.2 mm., narrowly linear-lanceolate, acuminate.
Morphology Reproductive morphology Flowers Corolla
Corolla about 5.5–6.5 mm. long, upper lip emarginate, lower lip trilobed, lobes rounded to somewhat emarginate, yellowish- or greenish-white.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 2.0–2.8 mm. long, slender.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 1.5 mm. long, 0.75 mm. in diam., narrowly conical.
Morphology Reproductive morphology Flowers Gynoecium Style
Style 1.5 mm. long, somewhat arcuate at apex.
Morphology Reproductive morphology Fruits
Capsule about 5.5 mm. long, narrowly oblong in outline, 4-furrowed.
[FZ]

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

Conservation
Least Concern (LC)
Note
This and other species of Stemodia are often mistaken for members of the Labiatae with which they have a superficial resemblance; the bilocular ovary is distinctive. In East Africa only S. serrata Benth. has been reported, yet S. verticillata (Mill.) Boldingh (syn. S. parviflora Ait.), an American species with blue flowers and globose capsules occurs as a creeping weed in West Africa, Mauritius and Java, and it may well be found in our region.
Type
Types: Senegal [Senegambia], 1828, Leprieur, s.n.; Perrottet, 447, 448 & 575 (G, syn.)
Morphology General Habit
Erect simple or usually much-branched herb, 12–32(–37) cm high.
Morphology Branches
branches ± erect, 4-angled, glandular-pubescent, viscid with a foetid scent
Morphology Leaves
Leaves narrowly elliptic or lanceolate, 0.5–5 cm long, 3–15 mm wide, narrowed to base or amplexicaul, acute at apex, margins serrate from the middle to the apex, finely glandular-pubescent
Morphology Reproductive morphology Flowers
Flowers solitary in axils forming a leafy spike-like raceme; pedicels 1–3 mm long; bracteoles 2 at the base of the calyx, narrowly linear, ± 3 mm long, ciliate
Morphology Reproductive morphology Flowers Calyx
Calyx ± 5 mm long in fruit, shorter in flower, lobes subulate-linear, acuminate, finely glandular-pubescent
Morphology Reproductive morphology Flowers Corolla
Corolla white, ± 6 mm long, upper lip emarginate, lower lip broadly and shortly 3-lobed
Morphology Reproductive morphology Fruits
Capsule 5–6 mm, narrow, acuminate, almost as long as the calyx, glabrous
Figures
Fig 14, p 37
Ecology
Moist, grassy places, flood plains, drying out during dry season; 50–1100 m
Distribution
Flora districts: K7 T5 T6 T8 Range: Senegal, Mali, Ghana, Chad, Cameroon, Sudan, Ethiopia, Zambia, Malawi, Madagascar, India, widely distributed but probably overlooked in our area
[FTEA]

Uses

Use
None recorded on specimens from our area
[FTEA]

Sources

  • 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
  • Flora of West Tropical Africa

    • Flora of West Tropical 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 2022. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 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 2022. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0