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Calopogonium mucunoides, called calopo and wild ground nut, is a species of flowering plant in the family Fabaceae, native to the New World Tropics, and introduced as a forage crop and a green manure to the tropics of Africa, Madagascar, the Indian Subcontinent, Asia, Malesia, Papuasia, and Australia. [1]
The AASHTO Soil Classification System was developed by the American Association of State Highway and Transportation Officials, and is used as a guide for the classification of soils and soil-aggregate mixtures for highway construction purposes.
Tetraselmis is a genus of phytoplankton. Tetraselmis is a green algal genus within the order Chlorodendrales, and they are characterized by their intensely-colored green chloroplast, their flagellated cell bodies, the presence of a pyrenoid within the chloroplast, and a scale-produced thecal-wall.
Adiantum lunulatum. Pteridaceae is a family of ferns in the order Polypodiales, [2] including some 1150 known species in ca 45 genera [3] (depending on taxonomic opinions), divided over five subfamilies. [4]
Rottboellia cochinchinensis is an annual with prop roots supporting erect, laterally-branching culms which are usually between 30–300 cm in length, [6] although up to 400 cm high culms have been described. [9]
Global variation in soil pH. Red = acidic soil. Yellow = neutral soil. Blue = alkaline soil. Black = no data.. Soil pH is a measure of the acidity or basicity (alkalinity) of a soil.
Alluvial fan in the French Pyrenees. An alluvial fan is an accumulation of sediments that fans outwards from a concentrated source of sediments, such as a narrow canyon emerging from an escarpment.
Robert J. Dunham published his classification system for limestone in 1962. [2] The original Dunham classification system was developed in order to provide convenient depositional-texture based class names that focus attention on the textural properties that are most significant for interpreting the depositional environment of the rocks.