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| Ismene parviflora & Clinanthus inflatus Meerow & A.Cano in Meerow et Cano, 2019. |
Abstract
Clinanthus inflatus and Ismene parviflora (Amaryllidaceae) are described from Ancash Department in Peru. The flower of C. inflatus is urceolate, and resembles that of Urceolina (Amaryllidaceae tr. Eucharideae), a unique morphology for the genus. Ismene parviflora, with its small, loosely formed, narrowly funnelform-tubular perigone with a ventricose limb, appears to have some affinity to subgen. Pseudostenomesson and may represent an intermediate form between the former and species of subgen. Ismene. Stenomesson rubrum is transferred to Clinanthus as C. ruber on the basis of its narrowly lorate leaf morphology.
Keywords: Amaryllidaceae, Andean biodiversity, Clinantheae, Hymenocallideae, Ismene, monocots, Neotropical flora, taxonomy
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| Clinanthus inflatus. A Habit B whole flower C whole flower cut open to show staminal corona and ovule number. Drawing by Klei Sousa. |
Clinanthus inflatus Meerow & A.Cano, sp. nov.
Diagnosis: This species differs from all known species of Clinanthus by the uniquely inflated perigone, the shape and coloration of which is reminiscent of the genus Urceolina Rchb. (Eucharideae) or superficially certain species of Andean vaccinioid Ericaceae.
Etymology: The specific epithet is from Latin and refers to the abruptly inflated perigone.
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| Ismene parviflora D–E flowers F habit in cultivation. photos by Asunción Cano |
Ismene parviflora Meerow & A.Cano, sp. nov.
Diagnosis: Ismene parviflora differs from all other species of the genus by the small flowers (< 4 cm long), that are loosely funnelform, terminating with a ventricose limb, but not infundibular to the degree of I. vargasii and I. morrisonii (subgen. Pseudostenomesson Meerow), the latter species to which it approaches in size. All other species of Ismene have large, crateriform flowers (subgen. Ismene) or large, zygomorphic flowers (subgen. Elisena).
Distribution and ecology: Ismene parviflora is known only from the type locality (Fig. 3), in seasonally dry vegetation.
Etymology: The specific epithet is from Latin and refers to the small size of the flowers.
Alan W. Meerow and Asunción Cano. 2019. Taxonomic Novelties in Amaryllidaceae from the Department of Ancash, Peru, and A New Combination in Clinanthus. PhytoKeys. 131: 115-126. DOI: 10.3897/phytokeys.131.36160
Resumen: Clinanthus inflatus (Amaryllidaceae) e Ismene parviflora se describen del departamento de Ancash en el Perú. La flor de C. inflatus es urceolada, y se asemeja a la de Urceolina (Amaryllidaceae tr. Eucharideae), una morfología única para el género. Ismene parviflora, con su forma suelta, perigonio angostamente funeliforme-tubular con una limbo ventricoso, parece tener alguna afinidad al subgen. Pseudostenomesson y puede representar una forma intermedia entre el primero y las especie de subgen. Ismene. Stenomesson rubrum se transfiere a Clinanthus como C. ruber, sobre la base de su morfología de hoja acintada estrecha.
