Within Agaricus subg. Minores, A. sect. Minores remains a little-studied section due generally to its delicate sporocarps often lacking taxonomically relevant morphological characters. To reconstruct the section, using the recent taxonomic system based on divergence times, and to evaluate the species diversity of A. sect. Minores in the Greater Mekong Subregion, 165 specimens were incorporated ...

A classical taxonomic revision of the genus Grimmia (Bryophyta) is currently in its final stage. According to Muñoz & Pando (2000) the genus comprise 73 species plus several described afterwards (Muñoz & al. 2002; Muñoz, 2002; Greven, 2003). A preliminary cladistic analysis using morphological characters render the following infrageneric groups: subg. Grimmia; subg. Orthogrimmia, including sect...

Acacia species are quite difficult to differentiate using morphological characters. Routine identification of Acacia samples is important in order to distinguish invasive species from rare species or those of economic importance, particularly in the forest industry. The genus Acacia is quite abundant and diverse comprising approximately 1355 species, which is currently divided into three subgen...

UNLABELLED PREMISE OF THE STUDY To understand the origins of C(4) grasslands, we must have a better interpretation of plant traits via phylogenetic reconstruction. Muhlenbergiinae, the largest subtribe of C(4) grasses in Mexico and the southwestern United States (with 176 species), is taxonomically poorly understood. • METHODS We conducted a phylogenetic analysis of 47 genera and 174 speci...

The internal transcribed spacer (ITS) region of 18S–26S nuclear ribosomal DNA (rDNA) was sequenced in 65 taxa representing most coneflowers (i.e., species in Dracopis, Echinacea, Ratibida, and Rudbeckia) and other taxa representing 21 outgroup genera of tribe Heliantheae. Results of parsimony analysis of the rDNA dataset by itself and in combination with the cpDNA dataset uphold the hypothesis ...

Recent molecular phylogenetic studies on Lophocoleaceae have recovered some well-supported monophyletic lineages within Chiloscyphus s. lat. that merit recognition at the generic level. As a consequence, Chiloscyphus is herein circumscribed to include only Chiloscyphus subgen. Chiloscyphus, Chiloscyphus subgen. Connati is elevated to generic rank to which the new name Cryptolophocolea is applie...

The presented special communication summarizes data concerning novel caffeic acid-derived polyether from the species of two genera (Symphytum and Anchusa) of Boraginaceae family Symphytum asperum, S. caucasicum, S. officinale and Anchusa italica and structure elucidation of its main structural element. The high-molecular fractions were isolated from crude polysaccharides by ultrafiltration on m...

Myconya Rondani specimens from the Himalayas, mostly Nepal and Myanmar, are revised. Pavoniya subg. n. is described. Altogether nine species from the subgenera Calomycoinya, Cymnoniya, Neoinycoinya and Pavomya subg. n. are recorded from the Himalayas and Indian subcontinent. The paper includes a key to the subgenera of Myconiya and the Himalayan species of Mycomya of the four subgenera. The fol...

When Jatropha costaricensis Webster & Poveda was described from Guanacaste, Costa Rica, some years ago (Webster & Poveda, 1978), it was predicted that other xeric relict taxa might be discovered elsewhere in Central America. Recent botanical exploration in Nicaragua has disclosed not only a number of new populations of Jatropha podagrica Hook. in rocky areas in Dept. Esteli, but also on basalti...

Sixty-three new combinations in Odontostemma (Alsineae, Caryophyllaceae) are made to accommodate placement of all currently recognized taxa of Arenaria subg. Odontostemma within the genus Odontostemma.