Skip to main content
Log in

A new species of Psidium from western Ecuador

  • Published:
Brittonia Aims and scope Submit manuscript

Abstract

Psidium guayaquilense from western Ecuador is described and illustrated. It is most similar to P. acidum, having in common with it non-angular, rounded seeds, anthers with a few subequal glands and peduncles with wings. Psidium guayaquilense differs from P. acidum in various ways, most notably in the principal marginal veins mainly 1–3 mm from margin (versus 3–10 mm or more from margin in P. acidum); closed calyx with a prominent apiculum (versus without an apiculum or with only a weak apiculum); ovules per locule 12–40 (versus 50–70); style 8–10 mm long (versus 12–16 mm); fruit 1.5–3 cm in diameter (versus 2–5 cm); fruit wall 0.5–2.5 mm thick (versus 4–13 mm); seeds usually 4–6 (versus 20–60 or more).

Resumen

Se ilustra y se describe Psidium guayaquilense del occidente de Ecuador. Es similar a P. acidum y tienen en común semillas no angulares, redondeadas, anteras con unas pocas glándulas subiguales y pedúnculos con alas. Psidium guayaquilense difiere de P. acidum en diversas maneras, lo más notablemente en las venas marginales principales generalmente 1–3 mm desde el margen (versus 3–10 mm o más del margen en P. acidum); cáliz cerrado con un apiculum prominente (versus sin un apiculum o con un apiculum débil); óvulos por lóculo 12–40 (versus 50–70); estilo de 8–10 mm de largo (versus 12–16 mm); frutos 1.5–3 cm de diámetro (versus 2–5 cm); pared del fruto 0.5–2.5 mm de espesor (versus 4–13 mm); semillas generalmente 4–6 (versus 20–60 o más).

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2

Similar content being viewed by others

Literature cited

  • IUCN. 2001. IUCN Red List Categories and Criteria, Version 3.1. Prepared by the IUCN Species Survival Commission. IUCN, Gland, Switzerland & Cambridge, UK.

  • Landrum, L. R. 2016. Re-evaluation of Psidium acutangulum (Myrtaceae) and a new combination in Psidium. Brittonia. doi:10.1007/s12228-016-9431-7.

Download references

Acknowledgements

The authors thank Bobbi Angell for the illustration. Specimens cited here have come from the following herbaria: ASU, GUAY, MO, QAP, QCA, QCNE, and SEL. We thank the curators for allowing us to borrow these specimens or to study them while visiting these herbaria. Lúcia Kawasaki and Fred Barrie kindly reviewed this article.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Leslie R. Landrum.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Landrum, L.R., Cornejo, X. A new species of Psidium from western Ecuador. Brittonia 68, 418–421 (2016). https://doi.org/10.1007/s12228-016-9432-6

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12228-016-9432-6

Keywords

Navigation