Taxonomic novelties in Amaryllidaceae from the Department of Ancash, Peru, and a new combination in Clinanthus.

Alan W Meerow,Asunción Cano

doi:10.3897/phytokeys.131.36160

Alan W Meerow, Asunción Cano

Open Access

https://doi.org/10.3897/phytokeys.131.36160

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Abstract

Clinanthus inflatus (Amaryllidaceae) and Ismene parviflora 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.

Highlights

Amaryllidaceae is a cosmopolitan family of geophytic herbs (Meerow and Snijman 1998), comprised of three subfamilies: Agapanthoideae Endl., Allioideae Herb., and Amaryllidoideae (Chase et al, 2009), with the largest number of genera placed in Amaryllidoideae (Meerow and Snijman 1998)
Meerow et al (1999) demonstrated with multiple plastid sequences that the endemic American genera were sister to the Eurasian clade, and further that the American clade was comprised of two sub-clades, the so-called Hippeastroid and Andean tetraploid clades (Meerow 2010; Meerow et al 2000)
Photos and a specimen at USM sent to the first author for identification have been determined to represent an undescribed species in the genus, with unique floral morphology. We describe it here as Clinanthus inflatus

Summary

Introduction

Amaryllidaceae is a cosmopolitan family of geophytic herbs (Meerow and Snijman 1998), comprised of three subfamilies: Agapanthoideae Endl., Allioideae Herb., and Amaryllidoideae (Chase et al, 2009), with the largest number of genera placed in Amaryllidoideae (Meerow and Snijman 1998). Herbarium data), in some cases occurring both there and in the Andes [e.g., C. coccineus (Ruiz & Pav.) Meerow]. C. humilis (Herb.) Meerow, which retains the ovary inside the bulb until shortly before seed ripening (Herbert 1839; Baker 1871), reaches elevations above 4000 m We make a new combination in the genus Clinanthus for the species hitherto known as Stenomesson rubrum Herb.

Results

Conclusion