Abstract
As part of the preparation of a taxonomic revision of Cestrum (Solanaceae) for Flora Mesoamericana eight hitherto undescribed species from Mexico, Guatemala, Costa Rica and Panama were identified. These eight new species are described and illustrated. Affinities of the species are discussed and Global Species Conservation Assessments presented.The new species are Cestrum amistadense A.K. Monro, sp. nov. (Vulnerable) which most closely resembles Cestrum longiflorum Ruiz & Pav., Cestrum contrerasianum A.K. Monro, sp. nov. (Vulnerable) which most closely resembles Cestrum formosum C.V.Morton, Cestrum darienense A.K. Monro, sp. nov. (Near Threatened) which most closely resembles Cestrum morae Hunz., Cestrum gilliae A.K. Monro, sp. nov. (Near Threatened) which most closely resembles Cestrum morae, Cestrum haberii A.K. Monro, sp. nov. (Vulnerable) which most closely resembles Cestrum poasanum Donn.Sm., Cestrum knappiae A.K. Monro, sp. nov. (Near Threatened) which most closely resembles Cestrum acuminatum Francey, Cestrum lentii A.K. Monro, sp. nov. (Near Threatened) which most closely resembles Cestrum johnniegentrianum D’Arcy and Cestrum talamancaense A.K. Monro (Least Concern) which most closely resembles Cestrum laxum Benth.
Highlights
The genus Cestrum (Solanaceae) includes ca. 150 species (Nee 1986, 2001; Benítez and D’Arcy 1998) of moth, butterfly and hummingbird pollinated small trees, shrubs, vines and robust herbs from the New World tropics and subtropics
Comparison of the holotype and paratype material with type specimens from the herbaria listed in the Materials and Methods section recovered Cestrum amistadense as most similar to C. langeanum D’Arcy and C. longiflorum Ruiz & Pav
Comparison of the holotype and paratype material with type specimens from the herbaria listed in the Materials and Methods section recovered C. contrerasianum as most similar to Cestrum formosum C.V
Summary
The genus Cestrum (Solanaceae) includes ca. 150 species (Nee 1986, 2001; Benítez and D’Arcy 1998) of moth, butterfly and hummingbird pollinated small trees, shrubs, vines and robust herbs from the New World tropics and subtropics. Local treatments exist for the Antilles (Schulz 1909), Guatemala (Gentry and Standley 1974), Nicaragua (D’Arcy 2001), Costa Rica (Standley and Morton 1938), Panama (D’Arcy 1973), Venezuela (Benítez de Rojas and D’Arcy 1998) and Veracruz, Mexico (Nee 1986). As part of this author’s preparation of a revisionary treatment for Flora Mesoamericana, eight currently undescribed species were discovered. Of the 2147 collections examined as part of a taxonomic revision for Flora Mesoamericana, 1003 were identified to species at the time of their accession and 266 were identified subsequent to their incorporation, resulting in 737 (ca. 1/3) collections unidentified to species prior to beginning the Flora Mesoamericana treatment
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