Kosteletzkya

Kosteletzkya<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> is a genus of the plant family Malvaceae that includes the seashore mallow (K. pentacarpos). It includes about 19 species found worldwide.<ref name = powo/>

Although similar in appearance to Hibiscus, Kosteletzkya typically bears more flattened capsules that dehisce loculicidally. The genus was separated from Hibiscus in 1835 by Carl Borivoj Presl, who named it after Vincenz Franz Kosteletzky (1801–1887).<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Phylogenetic evidence supports this genus being polyphyletic, with New World and Malagasy species of Kosteletzkya belonging to completely different clades within the Hibisceae. Under a revised nomenclature, only New World species would retain the genus name Kosteletzkya. An alternate revision would be to merge all New World Kosteletzkya species into Hibiscus.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref><ref>Template:Cite journal</ref>

Species

19 species are accepted by Plants of the World Online as of October 2025:<ref name=powo/>Template:Div col

• Kosteletzkya adoensis Template:Small
• Kosteletzkya batacensis Template:Small
• Kosteletzkya begoniifolia Template:Small
• Kosteletzkya blanchardii Template:Small
• Kosteletzkya borkouana Template:Small
• Kosteletzkya buettneri Template:Small
• Kosteletzkya depressa Template:Small – stinging mallow or white fenrose
• Kosteletzkya flavicentrum Template:Small
• Kosteletzkya grantii Template:Small
• Kosteletzkya hispidula Template:Small
• Kosteletzkya pentacarpos Template:Small – seashore mallow
• Kosteletzkya racemosa Template:Small
• Kosteletzkya ramosa Template:Small
• Kosteletzkya reclinata Template:Small
• Kosteletzkya rotundalata Template:Small
• Kosteletzkya semota Template:Small
• Kosteletzkya thurberi Template:Small
• Kosteletzkya tubiflora Template:Small
• Kosteletzkya velutina Template:Small
• Kosteletzkya wetarensis Template:Small

Formerly placed here

• Perrierophytum macranthum Template:Small (as K. macrantha Template:Small)
• Perrierophytum madagascariense Template:Small (as *K. madagascariensis Template:Small)
• Perrierophytum malvocoeruleum Template:Small (as K. malvocoerulea Template:Small)
• Perrierophytum reflexiflorum Template:Small (as K. reflexiflora Template:Small)
• Perrierophytum thouarsianum Template:Small (as K. thouarsiana Template:Small)
• Perrierophytum velutinum Template:Small (as K. velutina Template:Small)