Studies of species' range limits focus most often on abiotic factors, although the strength of biotic interactions might also vary along environmental gradients and have strong demographic effects. For example, pollinator abundance might decrease at range limits due to harsh environmental conditions, and reduced plant density can reduce attractiveness to pollinators and increase or decrease her...

Malaria is a serious cause of mortality globally. The disease is of regional concern in Africa and of national interest in Kenya due to its high morbidity and mortality as a result of development of resistant strains of Plasmodium falciparum to many existing drugs such as chloroquine. Alternative medicine using herbal remedies are commonly used to treat malaria in Kenya. However, plants used in...

Chlorophytum tuberosum Baker and Chlorophytum laxum R. Br. belong to family Liliaceae and is being used in the indigenous systems of medicine as a galactogogue and aphrodisiac. These species are commonly known as safed musali. The drug part is usually used as the white tuberous roots. The present studies include the macroscopic, microscopic characters, histochemistry and phytochemistry. The phy...