Passiflora clypeophylla Mast. ex Donn.Sm. (1891:7)

Taxonomy & Nomenclature

Conservation Status

Last (and only) record: April 1889 (Kuethe et al., 2026)

Rediscovered on: 21 February 2024 (Kuethe et al., 2026)

Distribution & Habitat

Guatemala

Anatomy & Morphology

Biology & Ecology

Hypodigm

Media

References

Kuethe, J. R., Medina, Dennis I., Sequen, Saban and Quezada, Maura L. (2026). Rediscovery of Passiflora clypeophylla (subgenus Decaloba): a highly threatened and narrow endemic species found within a karstic canyon in Guatemala. Nordic Journal of Botany 2026: e05001. https://doi.org/10.1002/njb.05001

Porter-Utley, K. (2014). A revision of Passiflora L. subgenus Decaloba (DC.) Rchb. supersection Cieca (Medik.) J.M.MacDougal & Feuillet (Passifloraceae). PhytoKeys 43: 1-224.

POWO. (2026). Plants of the World Online (online resource). Facilitated by the Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [Accessed 11 February 2026]

Villaseñor, J. L. (2016). Checklist of the native vascular plants of Mexico. Revista Mexicana de Biodiversidad 87: 559-902.

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Dicraeanthus zehnderi H.Hess (1961:188)

Taxonomy & Nomenclature

Conservation Status

Missing (Onana et al., 2011:246)

Last (and only) record: 1961 or before (Onana et al., 2011:246)

IUCN RedList status: Critically Endangered

Distribution & Habitat

Cameroon

Anatomy & Morphology

Biology & Ecology

Hypodigm

Media

References

Cusset, C. (1987). Podostemacees-Tristichacees, pp. 51-99. In: Satabie, B. and Morat, P. (eds.). Flore du Cameroun. Ministere de l'Enseignement Superieure et de la Recherche Scientifique, Yaounde (Cameroun).

Ghogue, J.-P. (2010). Dicraeanthus zehnderi. The IUCN Red List of Threatened Species 2010: e.T185600A8444300. https://dx.doi.org/10.2305/IUCN.UK.2010-3.RLTS.T185600A8444300.en. Accessed on 26 July 2025.

Govaerts, R. (2000). World Checklist of Seed Plants Database in ACCESS Genera starting with letter D: 1-30141.

Onana, Jean Michel, Cheek, Martin and Pollard, Benedict John. (2011). Red Data Book of the Flowering Plants of Cameroon: IUCN Global Assessments. Kew, Richmond, Surrey, UK: Kew Publishing. 578 pp.

POWO. (2025). Plants of the World Online (online resource). Facilitated by the Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [Accessed 26 July 2025]

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Dalechampia burchellii Müll.Arg. (1874:649)

Taxonomy & Nomenclature

Synonyms: Dalechampia anomala Pax & K.Hoffm., Pflanzenr. 24. 1919; Dalechampia bangii Pax & K.Hoffm., Pflanzenr. 24. 1919

Conservation Status

Rediscovered (Mendes et al., 2024)

Distribution & Habitat

Bolivia, Brazil & Paraguay

Anatomy & Morphology

Biology & Ecology

Hypodigm

Media

References

Govaerts, R., Frodin, D. G. and Radcliffe-Smith, A. (2000). World Checklist and Bibliography of Euphorbiaceae (and Pandaceae) 1-4: 1-1622. The Board of Trustees of the Royal Botanic Gardens, Kew.

Jørgensen, P. M., Nee, M. H. and Beck., S. G. (eds.). (2013). Catálogo de las plantas vasculares de Bolivia. Monographs in Systematic Botany from the Missouri Botanical Garden 127: 1-1741. Missouri Botanical Garden.

Mendes, J. C. R., Pereira-Silva, R. A., Oliveira, M. H., Bígio, N. C., Secco, R. S. and Silveira, M. (2024). Dalechampia burchellii (Euphorbiaceae): rediscovered, new synonyms, and update of geographical distribution. Hoehnea 51: e802023. https://doi.org/10.1590/2236-8906e802023

Pax, F. and Hoffmann, K. (1919). Euphorbiaceae - Dalechampia. In: A. Engler (ed.). Das Pflanzenreich 12: 1-59.

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Linum macrocarpum C.M.Rogers (1963:109)

Spring Hill flax

Taxonomy & Nomenclature

Conservation Status

Last record: 1897 (Ripley, 1975:44)

Since Rediscovered [by implication] (NatureServe, 2024)

Previously considered possibly Extinct ("poEX") (Ripley, 1975:43), but known to be extant today (NatureServe, 2024), and thus implicitly Rediscovered.

Distribution & Habitat

Alabama, Florida, Louisiana & Mississippi, USA

Anatomy & Morphology

Biology & Ecology

Hypodigm

Media

References

Original scientific description:

Rogers, C. M. (1963). Yellow flowered species of Linum in eastern North America. Brittonia 15:97-122.

Other references:

Flora of North America Editorial Committee (FNA). (2016). Flora of North America north of Mexico. Vol. 12. Magnoliophyta: Vitaceae to Garryaceae. Oxford Univ. Press, New York. xxiv + 603 pp.

Kartesz, J. T. (1994). A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

NatureServe. (2024). Linum macrocarpum: Spring Hill Flax. NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer [web application]. NatureServe, Arlington, Virginia. Available https://explorer.natureserve.org/ [Accessed 1 December 2024]

POWO. (2024). Plants of the World Online (online resource). Facilitated by the Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [Accessed 1 December 2024]

Ripley, S. Dillon. (1975). Report on endangered and threatened species of the United States. House Document 94-51: 1-200 [44].

Southern Appalachian Species Viability Project. (2002). A partnership between the U.S. Forest Service-Region 8, Natural Heritage Programs in the Southeast, NatureServe, and independent scientists to develop and review data on 1300+ regionally and locally rare species in the Southern Appalachian and Alabama region. Database (Access 97) provided to the U.S. Forest Service by NatureServe, Durham, North Carolina.

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