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Title: Two new species of endemic Ecuadorean Amaryllidaceae (Asparagales, Amaryllidaceae, Amarylloideae, Eucharideae)

Author
item Meerow, Alan
item JOST, LOU - Ecominga Foundation, Via A Runtun, Banos, Tungurahua, Ecuador
item OLEAS, N. - Universidad Technologica De Pereira

Submitted to: Review Article
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/14/2015
Publication Date: 4/2/2015
Publication URL: http://phytokeys.pensoft.net/browse_journal_articles?journal_id=3
Citation: Meerow, A.W., Jost, L., Oleas, N. 2015. Two new species of endemic Ecuadorean Amaryllidaceae (Asparagales, Amaryllidaceae, Amarylloideae, Eucharideae). PhytoKeys. 48:1-9. doi: 10.3897/phytokeys.48.4399.

Interpretive Summary: Interpretive Abstract New species of the genera Stenomesson and Eucharis (Amaryllidaceae) are described from Ecuador. Stenomesson ecuadorense is the second species of the genus reported from that country, and the only one found nowhere else. It is related to S. miniatum and S. campanulatum, both from Peru, with which it shares orange flower color and stamen characters. It differs from S. miniatum by the non-urn-shaped perianth, from S. campanulatum by its shorter stamens and longer corolla, and from both by its lower elevation, cloud forest habitat. Eucharis ruthiana, found in the vicinity of Zamora, is related to E. mooreii, from which it differs by the narrower leaves and tepals, short, deeply cleft staminal cup, the long teeth on either side of the free filaments, the narrowly subulate, incurved free filaments, and the shorter style. The green mature fruit and campanulate floral morphology place it in Eucharis subg. Heterocharis.

Technical Abstract: Technical Abstract New species of the genera Stenomesson and Eucharis (Amaryllidaceae) are described from Ecuador. Stenomesson ecuadorense is the second species of the genus reported from that country, and the only endemic one. It is related to S. miniatum and S. campanulatum, both from Peru, with which it shares orange flower color and the fusion of the staminal cup to the perianth tube. It differs from S. miniatum by the non-urceolate perianth, from S. campanulatum by its shorter stamens and longer perianth, and from both by its lower montane, cloud forest habitat. Eucharis ruthiana, found in the vicinity of Zamora, is related to E. mooreii, from which it differs by the narrower leaves and tepals, short, deeply cleft staminal cup, the long teeth on either side of the free filaments, the narrowly subulate, incurved free filaments, and the shorter style. The green mature fruit and campanulate floral morphology place it in Eucharis subg. Heterocharis.