Many people who appreciate cannabis are most familiar with just two parts of the marijuana plant—the flowers that they smoke and the leaf, which has become an iconic image of pot culture. But how do ...

The genus Grewia comprises about 300 species widely distributed in Africa, Asia, and Australia. Most of its species are shrubs and small trees, but three species are climbers having stems with four ...

1. Eighty-two species, representing forty-one families of plants, characterized, at least in part, by herbaceous stems, were examined to determine the role of mechanics in the evolution of the ...

Chapter 1 Problems of adaptation to a terrestrial environment -- Chapter 2 An overview of plant structure and development -- Chapter 3 The protoplast of the eukaryotic cell -- Chapter 4 Structure and ...

Plant stem cells, as in animals, are maintained in specialized microenvironments, which are known as stem cell niches, where local signals from organizer cells act to prevent stem cell differentiation ...