INVESTIGADORES
POZNER raul Ernesto
artículos
Título:
Revisión del género Cucurbitella (Cucurbitaceae)
Autor/es:
POZNER, R.
Revista:
ANNALS OF THE MISSOURI BOTANICAL GARDEN
Editorial:
Allen Press
Referencias:
Lugar: St. Louis; Año: 1998 p. 425 - 438
ISSN:
0026-6493
Resumen:
<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-US;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> According to preceding authors, the South American genus Cucurbitella includes 6 species whose diagnostic characters are almost worthless. This study establishes foliar primordia, stamen exsertion, and shape and size of the petals and hypanthium as the only morphological characters with variation among specimens. These characters show a continuous variation with no correlation among them, and any internal limits in this variation would be arbitrary. Thus, Cucurbitella consists of only 1 polymorphic species: C. asperata (Gillies) Walp. The geographic distribution of foliar primordia frequencies suggests three ecological races but, due to intermediate specimens, these races do not merit formal scientific names, and a key to identify them is not included. Cucurbitella ecuadorensis Cogn. is removed from Cucurbitella because the holotype represents Posadaea sphaerocarpa Cogn.