Calyx (anatomy) kidney, a conglomeration of two or three minor calyces to form a major calyx, or the Calyx of Held, a particularly large synapse in the mammalian auditory central nervous system, named by H. Held in his 1893 article "Die centrale Gehörleitung", due to its flower-petal-like shape. In male insects, a funnel-shaped expansion of the basal part of the "vas deferens" (part of the seminal duct). Also in entomology, a flattened cap of neuropile in an insect brain (a component of the corpus pedunculatum) and by certain female insects, an expansion of the oviduct into which the ovarioles open. Calyx (anatomy)
Botany 2000 the newsletter, the UNESCO Botany 2000-Asia program sponsors occasional workshops on the taxonomy, ethnobotany and chemistry of various plant families, as well as training courses in herbarium techniques and curation. Botany 2000-Africa is implemented by UNESCO's Nairobi Office and deals with the conservation and use of the medicinal flora of Africa. Some of the activities of the Botany 2000-Africa program are published in: S. Edwards and Z. Asfaw (Editors): "The Status of Some Plant Resources in Parts of Tropical Africa". Botany 2000: East and Central Africa; NAPRECA Monograph Series No. 2. Published by "Natural Products Research Network for Eastern and