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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids II
Ordo: Malvales

Familia: Cistaceae
Genus: Crocanthemum
Species: C. aldersonii – C. arenicola – C. argenteum – C. berlandieri – C. bicknellii – C. brasiliense – C. canadense – C. carolinianum – C. chihuahuense – C. corymbosum – C. dumosum – C. georgianum – C. glomeratum – C. greenei – C. nashii – C. pringlei – C. propinquum – C. rosmarinifolium – C. scoparium – C. suffrutescens
Species from Mexico accepted as Helianthemum Mill. by POWO, placed by Hassler to Crocanthemum without valid combination: H. concolor – H. patens – H. pugae
Name

Crocanthemum Spach, Ann. Sci. Nat. Bot., ser. 2, 6: 370 (1836).

Type species: C. carolinianum (Walter) Spach

Synonyms

Homotypic
Halimium sect. Lecheoides (Dunal) Grosser in H.G.A. Engler, Pflanzenreich IV, 193: 33 (1903).
Helianthemum sect. Lecheoides Dunal in DC., Prodr. 1: 269 (1824).
Heterotypic
Heteromeris Spach, Companion Bot. Mag. 2: 290 (1837).
Type species: non design.
Horanthes Raf., Sylva Tell. 132 (1838).
Type species: non design.
Trichasterophyllum Willd. ex Link, Jahrb. Gewächsk. 1(3): 69 (1820), nom. inval.
Type species: T. hyssopifolium Willd. ex Link

Distribution
Native distribution areas:
References
Primary references

Spach, É. 1836. Conspectus Monographiae Cistacearum. Annales des Sciences Naturelles, Botanique, sér. 2, 6: 357–375. BHL Reference page.

Additional references

Arrington, J.M. 2004. Systematics of the Cistaceae. Ph.D. thesis, Duke University, Durham, North Carolina.
Sorrie, B.A. 2011. Transfer of North American Helianthemum to Crocanthemum (Cistaceae): new combinations. Phytologia 93(2): 270–271. BHL. Reference page.

Links

Hassler, M. 2019. Crocanthemum. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2019. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2019 October 10. Reference page.
International Plant Names Index. 2019. Crocanthemum. Published online. Accessed: October 10 2019.
Tropicos.org 2019. Crocanthemum. Missouri Botanical Garden. Published on the internet. Accessed: 2019 October 10.
Govaerts, R. et al. 2019. Crocanthemum in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2019 Aug 28. Reference page.
Hassler, M. 2022. World Plants. Synonymic Checklist and Distribution of the World Flora. . Crocanthemum. Accessed: 17 Jan 2022.

Vernacular names
English: Coastal Sand Frost Weed

Crocanthemum is a genus of flowering plants in the family Cistaceae.[1] They are native to both North and South America where they are widespread.[2]

Crocanthemum are herbaceous perennials or subshrubs with alternate leaves. With the exception of species in California, they generally produce two types of flowers: showy, yellow chasmogamous (cross-pollinated) produced earlier in the growing season, followed by cleistogamous (self-pollinated) flowers that are smaller and lack petals.[2][3] All species of Crocanthemum are fire tolerant and are found in open habitats.

Although the genus was first named in 1836 to encompass New World species of Helianthemum, it generally went unrecognized by taxonomists and its species were included in a broad concept of Helianthemum throughout much of the 1800s and 1900s. However, phylogenetic studies in 2004 and 2009 indicated that the New World species of Helianthemum were more closely related to Hudsonia than Old World Helianthemum.[2][4] This required the resurrection of the genus Crocanthemum in order to maintain monophyly.
Species

Crocanthemum aldersonii
Crocanthemum arenicola
Crocanthemum argenteum
Crocanthemum bicknellii
Crocanthemum brasiliense
Crocanthemum canadense
Crocanthemum carolinianum
Crocanthemum corymbosum
Crocanthemum dumosum
Crocanthemum georgianum
Crocanthemum glomeratum
Crocanthemum greenei
Crocanthemum nashii
Crocanthemum nutans
Crocanthemum pringlei
Crocanthemum propinquum
Crocanthemum rosmarinifolium
Crocanthemum scoparium
Crocanthemum suffrutescens

References

"Crocanthemum". Royal Botanical Gardens, Kew. Retrieved 2019-12-10.
Crocanthemum Flora of North America
Alan Weakley (2015). "Flora of the Southern and Mid-Atlantic States".
Guzman, Beatriz; Vargas, Pablo (21 January 2009). "Historical biogeography and character evolution of Cistaceae (Malvales) based on analysis of plastid rbcL and trnL-trnF sequences" (PDF). Organisms, Diversity, and Evolution. 9 (2): 83–99. doi:10.1016/j.ode.2009.01.001. Retrieved 2019-12-11.

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