Suaeda californica between the leaves, all along the stems. Each cluster has 1 to 5 flowers and is accompanied by a leaflike bract. The calyx is a cone of fleshy, rounded sepals, and there are no petals. The fruit is an utricle that grows within the calyx. This rare plant, "Suaeda californica", grows in a restricted area within the intertidal zone of salt marshes. It is threatened by anything that alters the hydrology of the area, such as changes in sedimentation, including dredging, erosion, and recreation. It requires a porous substrate high in nitrogen, which may come from decaying plant matter and
Calyx of Held principal neuron with a distinct morphology: branching of the calyx allows the creation of second- and third-order networks. Each branch establishes a connection with the principal neuron, establishing a large number of active zones. This is unusual for synaptic terminals in the brain, as most create a single active zone. Each calyx contains anywhere from 300 to 700 active zones, and in each of the active zones there are about 100 glutamate-containing vesicles with about 3 docked vesicles at a time. These vesicles are large, consistent with the findings regarding quantal size in other adult synapses. Dense-core vesicles, usually containing