Abstract
Ipomoea sawyeri shows no obvious relationship with any other species in Peru. It shares the persistent, foliose bract condition with the Ecuadorian speciesI. harlingii, and the BrazilianI. echinocalyx, and is probably allied with them.
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Austin, D. F. 1982. Convolvulaceae.In: G. Harling & B. Sparre, editors. Flora of Ecuador No. 15. Swedish Research Councils Publishing House, Stockholm.
— 1985. Los camotes silvestres y cultivados del Peru:Ipomoea spp. (Convolvulaceae). Bol. Lima 41: 29–38.
—, Z. Huaman & F. De la Puente. 1986. Especies adicionales del generoIpomoea (Convolvulaceae) en el Peru. Bol. Lima 47: 91–96.
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Austin, D.F. Ipomoea sawyeri (Convolvulaceae), a new species from Peru. Brittonia 43, 93–95 (1991). https://doi.org/10.2307/2807300
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DOI: https://doi.org/10.2307/2807300