Topic
Pilidiostigma
About: Pilidiostigma is a research topic. Over the lifetime, 2 publications have been published within this topic receiving 35 citations.
Papers
TL;DR: Results from morphological and molecular analyses reject the hypothesis that Rhodomyrtus is monophyletic, and additional data are needed before Rhodomarytus can be split confidently into demonstrably monophyletsic genera.
Abstract: The monophyly of the genus Rhodomyrtus (Myrtaceae) was tested using data from morphology and the nuclear ribosomal ITS regions (ITS-1, ITS-2) and 5.8S gene. Representative species from baccate genera hypothesized to be closely related to Rhodomyrtus were included, such as Archirhodomyrtus, Octamyrtus, Knnakomyrtus, and some genera believed to be more distantly related, including Rhodamnia, Decaspermum, Pilidiostigma, and Myrtastrum. Up to four capsular-fruited outgroup species were used to root the trees (Heteropyxis natalensis, Carpolepis tardiflora, Lophostemon confertus, and Metrosideros rotundifolia). Morphological data using neighbor joining scattered species of Rhodomyrtus across several branches but generally recovered genera other than Rhodomyrtus. Using parsimony, the morphological data analysis also rejected the monophyly of Rhodomyrtus and resulted in consensus trees with relatively low resolution and bootstrap support. Based on traditionally recognized generic boundaries, results from...
36 citations
TL;DR: A systematic treatment is presented for the six species of Pilidiostigma (Myrtaceae), one newly described, which occurs predominantly in eastern Australia in wet forests east of the Great Dividing Range, although P. papuanum also extends into New Guinea.
Abstract: A systematic treatment is presented for the six species of Pilidiostigma (Myrtaceae), one newly described. Pilidiostigma is distinguished from other fleshy-fruited genera of Myrtaceae by the combination of its elliptic anthers, capitate to peltate stigma, testa usually chartaceous-membranous and covered with numerous large yellow or white oil glands (except for P. tetramerum), 1–3 locular ovary, and globular embryo in which the cotyledons and hypocotyl often are not, or only slightly, differentiated. The genus occurs predominantly in eastern Australia in wet forests east of the Great Dividing Range from near sea level to 1300 meters, although P. papuanum also extends into New Guinea. The new species Pilidiostigma sessile is described from northeastern Queensland and is diagnosed by its sessile or nearly sessile, basally rounded to cordate leaves. Lectotypes are designated for P. rhytispermum and P. glabrum. Detailed descriptions are provided for each species, along with a key, and profiles of ess...
7 citations
Performance Metrics
| Year | Papers |
|---|---|
| 2011 | 1 |
| 2004 | 1 |