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Studies in the capparaceae XXIX: Synopsis of quadrella, a mesoamerican and west Indian genus

Abstract:

Quadrella (DC.) J. Presl (Capparaceae) is validated as an American genus of 25 species, characterized by the stellate to lepidote-peltate indumenta, flowers with valvate calyces, dehiscent fruits bearing seeds with green, white or cream embryos, a haploid chromosome number of n = 8, and a diploid one of 2n = 16. The following taxa are transferred from New World Cappans L. s.l. to Quadrella: Quadrella subg. Breyniastrum (DC.) Iltis, comb, nov., Quadrella antonensis (Woodson) Iltis & Cornejo, comb, nov., Quadrella asperifolia (K. Presl) Iltis & Cornejo, comb, nov, Quadrella calciphila (Standi. & Steyerm.) Iltis & Cornejo, comb, nov, Quadrella filipes (Donnell Smith) Iltis & Cornejo, comb, nov, Quadrella indica (L.) Iltis & Cornejo, comb, nov., Quadrella lundellii (Standl) Iltis & Cornejo, comb, nov., Quadrella mirifica (Standl.) Iltis & Cornejo, comb, nov., Quadrella pringlei(Briquet) Iltis & Cornejo, comb, nov., Quadrella steyermarkii (Standl.) Iltis & Cornejo, comb, nov.; Quadrella subgenus Intutis (Raf.) Iltis, comb, et star nov., Quadrella angustifolia (Kunth) Iltis & Cornejo, comb, nov., Quadrella domingensis(Spreng ex DC.) Iltis & Cornejo, comb, nov., Quadrella domingensis subsp grisebachii (Eichler) Iltis & Cornejo, comb, nov, Quadrella ferruginea (L.) Iltis Cornejo, comb, nov., Quadrella ferruginea subp cubensis (R. Rankin) Iltis & Cornejo, comb, nov, and Quadrella singularis (R. Rankin) Iltis & Cornejo, comb. nov. Lectotypes are designated for Octancma Raf., Pleuteron Raf., Quadrella asperifolia, Q.filipes, Q. lundellii, and Cappans intermedia Kunth. Neotypes are designated for Quadrella and Intutis Raf. All species of Quadrella are geographically restrictedto southern North America (Texas and Florida), Central America to northern South America (Colombia and Venezuela) and the West Indies Keys to all the subgenera, species and subspecies of Quadrella are herewith provided.