Verbenaceae
Stachytarpheta

Stachytarpheta paraguariensis Moldenke

First published in Phytologia 2: 473 (1948)
This species is accepted
The native range of this species is W. Central & S. Brazil to Paraguay. It is a shrub and grows primarily in the seasonally dry tropical biome.

Descriptions

Sandy Atkins. (2005). The Genus Stachytarpheta (Verbenaceae) in Brazil. Kew Bulletin, 60(2), 161-272. Retrieved from http://www.jstor.org/stable/4110935

Type
Paraguay, Fuerte Olimpo, 18 Oct. 1946, Rojas 13615 (holotype NY; isotype K).
Morphology General Habit
Shrub, 1 - 2 m, dichotomously branched
Morphology Stem
Stems 4- sided, densely white-hairy on upper stems, lower stems ± glabrous
Morphology Leaves
Leaves subsessile, chartaceous, ovate, 2.5 - 7 x 1.2 - 3 cm; apex obtuse; base long- attenuate, decurrent into petiole; margin crenate; upper and lower surface with indumentum of white hairs, more numerous along veins, and on lower surface
Morphology Reproductive morphology Inflorescences
Inflorescence slender, up to 20 cm long by 3 mm wide; bracts woody, narrowly elliptic, 8 mm long, pilose with ciliate margin
Morphology Reproductive morphology Flowers Calyx
Calyx straight, 8 mm long, pilose on outer surface, 5-toothed with 4 ± equal teeth and 1 very small adaxially
Morphology Reproductive morphology Flowers Corolla
Corolla violet-blue, hypocrateriform, tube slightly curved, 9 mm long; lobes c. 5 mm across
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted above middle of tube
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary narrowly oblong, c. 3 mm long; style 10 mm long
Morphology Reproductive morphology Fruits
Fruit dark brown, c. 7 mm long.
Distribution
Paraguay and southern Brazil
Ecology
Cerrado and grassland.
Conservation
Vulnerable. This species has a scattered distribution in Brazil; there are only three collections. The species occurs in the Chaco region of Paraguay. None of the sites from which it has been collected is specifically protected.
Note
Similar to Stachytarpheta cayennensis, but differs in its more hirsute appearance and larger corolla lobes.
[KBu]

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

  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • 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 Bulletin

    • Kew Bulletin
    • http://creativecommons.org/licenses/by-nc-sa/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