Pollen chemical and mechanical defences restrict host-plant use by bees.

Plants produce an array of chemical and mechanical defences that provide protection against many herbivores and pathogens. Putatively defensive compounds and structures can even occur in floral rewards: for example, the pollen of some plant taxa contains toxic compounds or possesses conspicuous spines. Yet little is known about whether pollen defences restrict host-plant use by bees.

Spatio-temporal patterns in the history of colonial botanical exploration in India.

A study of Indian botany during the colonial period provides us with an interdisciplinary sphere covering science, politics, sociology, economics, and other associated domains. The presentation of this rich legacy to general readers often restricts itself to the descriptive accounts of explorers with little analysis of the intermingling of socio-political dynamics, landscape, and geography. We attempt to revisit the colonial plant exploration history through spatio-temporal analyses to understand how explorers with divergent interests traversed the country in different periods and directions.