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Plant biodiversity is threatened, yet many species remain undescribed. It is estimated that >50% of undescribed species have already been collected and are awaiting discovery in herbaria.
Plant phenological responses to global warming are well studied. However, while many locations are experiencing increased temperatures, some locations are experiencing climate cooling.
The North American crop wild relatives (CWR) of lettuce (Lactuca L.) represent an underexplored
Predicting the flowering times of angiosperm taxa is a goal of mounting importance in the face of future climate change, with applications not only in plant biology and ecology, but also horticulture, agriculture, and invasive species management.
Studies in plant phenology have provided some of the best evidence for large-scale responses to recent climate change.
The Plant Phenology Ontology (PPO) was originally developed to integrate phenology observations of whole plants across different global observation networks.
Herbarium specimens are increasingly recognized as an important resource for conservation
Major international herbaria, natural history museums and universities have recently begun to digitise their collections to facilitate studies and improve access to collections.
During the last centuries, humans have transformed global ecosystems. With their temporal
dimension,herbaria provide the otherwise scarce long-termdata crucial for trackingecological and
The first two decades of the twenty-first century have seen a rapid rise in the mobilization of digital biodiversity data.