Description of a new species of the complex from the Caribbean Sea, and resurrection of from the East Pacific (Crustacea, Anomura, Porcellanidae).

The complex currently consists of six American species distributed in the West Atlantic, including the amphi-American . All species in the complex are similar in their adult morphology but differ in colour, size, larval morphology, and shape of the adult sternal plate. The West Atlantic species have different geographic ranges, which overlap in the southern Caribbean.

Phylogeny, morphology and chemistry reveal two new multispored species in the group (Lecanoraceae, Ascomycota).

Two new multispored species from China, Li J. Li & Printzen, and Li J. Li & Printzen, are described and illustrated here, based on morphological, chemical and molecular evidence.

Strong plastid degradation is consistent within section , the most speciose lineage of .

Recovering phylogenetic relationships in lineages experiencing intense diversification has always been a persistent challenge in evolutionary studies, including in section sensu lato (s.l.).

sp. n., a new isopod of the genus (Crustacea, Malacostraca, Isopoda) from the Atlantic sector of the Southern Ocean.

Background: In the framework of the British Antarctic Survey (BAS) Expedion JR 15005 SO-AntEco, held in February-March 2016, the South Orkney Islands seafloor was sampled in order to investigate the distribution and composition of benthic communities around the area.

New Information: A new species of the genus Ohlin, 1901 is described from the Burdwood Bank area (South Orkney Islands). It has been collected during the SO-AntEco JR15005 RRS James Clark Ross expedition under the lead of the British Antarctic Survey (BAS).

Lineage-specific plastid degradation in subtribe Gentianinae (Gentianaceae).

The structure and sequence of plastid genomes is highly conserved across most land plants, except for a minority of lineages that show gene loss and genome degradation. Understanding the early stages of plastome degradation may provide crucial insights into the repeatability and predictability of genomic evolutionary trends. We investigated these trends in subtribe Gentianinae of the Gentianaceae, which encompasses ca.

Detection and annotation of plant organs from digitised herbarium scans using deep learning.

As herbarium specimens are increasingly becoming digitised and accessible in online repositories, advanced computer vision techniques are being used to extract information from them. The presence of certain plant organs on herbarium sheets is useful information in various scientific contexts and automatic recognition of these organs will help mobilise such information. In our study, we use deep learning to detect plant organs on digitised herbarium specimens with Faster R-CNN.