Soil, also commonly referred to as earth or dirt, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support the life of plants and soil organisms. Some scientific definitions distinguish dirt from soil by restricting the former term specifically to displaced soil.
The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at 23°26′10.0″ (or 23.43612°) N and the Tropic of Capricorn in the Southern Hemisphere at 23°26′10.0″ (or 23.43612°) S. The tropics are also referred to as the tropical zone and the torrid zone.
Marsileaceae is a small family of heterosporous aquatic and semi-aquatic ferns, though at first sight they do not physically resemble other ferns. The group is commonly known as the "pepperwort family" or as the "water-clover family" because the leaves of the genus Marsilea superficially resemble the leaves of a four-leaf clover. In all, the family contains 3 genera and 50 to 80 species with most of those belonging to Marsilea.
Saag, also spelled sag or saga, is an Indian subcontinental leafy vegetable dish eaten with bread such as roti or naan, or in some regions with rice. Saag can be made from spinach, mustard greens, collard greens, basella, finely chopped broccoli or other greens, along with added spices and sometimes other ingredients such as chhena.
Alchemilla is a genus of herbaceous perennial plants in the family Rosaceae, with the common name lady's mantle applied generically as well as specifically to Alchemilla mollis when referred to as a garden plant. The plant used as a herbal tea or for medicinal usage such as gynaecological disorders is Alchemilla xanthochlora or in Middle Europe the so-called common lady's mantle Alchemilla vulgaris. There are about 700 species, the majority native to cool temperate and subarctic regions of Europe and Asia, with a few species native to the mountains of Africa and the Americas.
Marsilea is a genus of approximately 65 species of aquatic ferns of the family Marsileaceae. The name honours Italian naturalist Luigi Ferdinando Marsili (1656–1730).
Regnellidium is a monotypic genus of ferns of family Marsileaceae.
Marsilea villosa, the ʻihiʻihi (Hawaiian) or villous waterclover (English), is a species of fern that is endemic to the islands of Oʻahu, Molokaʻi and Niʻihau in Hawaii. It is found exclusively in areas that experience periodic flooding and become ephemeral pools within low elevation dry forests and shrublands. Standing water allows the sporocarp to open and release spores. It also enables the resulting sperm to swim toward and fertilize female ova. For new plants to become established, the waters must subside. Sporocarps only form once the soil has dried to a certain level. Like other species in its genus, the leaves of M. villosa resemble those of a four-leaf clover.
Grevillea vestita is a species of flowering plant in the family Proteaceae and is endemic to the southwest of Western Australia. It is an erect, spreading, prickly shrub with lobed leaves, the number and arrangement of lobes depending on subspecies, and more or less spherical to dome-shaped clusters of hairy, white to cream-coloured flowers sometimes tinged with pink.
Eucalyptus polyanthemos, commonly known as red box, is a species of small to medium-sized tree, that is native to eastern Australia but has been introduced into other countries. It has fibrous bark on the trunk and larger branches, smooth greyish to cream-coloured bark above, or smooth bark throughout. It has broadly egg-shaped to round juvenile leaves, lance-shaped, egg-shaped or almost round adult leaves, flower buds in groups of seven, white flowers and barrel-shaped to conical fruit.
Grevillea curviloba is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a prostrate to erect shrub with short branchlets, divided leaves with linear to narrowly lance-shaped lobes with the narrower end towards the base, and white to cream-coloured flowers.
Marsilea drummondii is a species of fern known by the common name nardoo. It is native to Australia, where it is widespread and common, particularly in inland regions. It is a rhizomatous perennial aquatic fern that roots in mud substrates and produces herbage that floats on the surface of quiet water bodies. It occurs in water up to one metre deep. It occurs in abundance after floods. It can form mats on the water's surface and cover the ground in carpets as floodwaters recede. It is variable in appearance and occurs in many types of wetland habitat. In general the frond is made up of two pairs of leaflets and is borne erect when not floating.
Marsilea quadrifolia is a herbaceous plant found naturally in central and southern Europe, Caucasia, western Siberia, Afghanistan, south-west India, China, Japan, and Vietnam, though it is considered a weed in some parts of the United States, where it has been well established in the northeast for over 100 years. Its common names include four leaf clover and European waterclover (USA).
Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll. Exceptions are parasitic plants that have lost the genes for chlorophyll and photosynthesis, and obtain their energy from other plants or fungi.
Marsilea crenata is a species of fern found in Southeast Asia. It is an aquatic plant looking like a four leaf clover. Leaves floating in deep water or erect in shallow water or on land. Leaflets glaucous, sporocarp ellipsoid, on stalks attached to base of petioles.
Marsilea ancyclopoda, common name tropical water clover, is a plant species native to the warmer parts of the Western Hemisphere. It is widely distributed through Latin America from Mexico to Argentina, as well as from the West Indies. In the United States, it has been reported only from Florida, southern New Mexico, Puerto Rico and the Virgin Islands.
Marsilea minuta, or dwarf waterclover is a species of aquatic fern in the family Marsileaceae. It is not to be confused with Marsilea minutaE.Fourn. 1880, which is a synonym for Marsilea vestita. Other common names include gelid waterklawer, small water clover, airy pepperwort, and pepperwort, though the lattermost also applies to plants in the genus Lepidium. In French it is called marsilea à quatre feuilles and petite marsilée, the latter appearing to be a calque with the Latin botanical name. In Chinese it is 南国田字草, literally "southern field word grass," referencing the similarity of the leaflet shape to the Chinese character for "field." The Koch Rajbongshi people and Garo people call it shusni shak. It is called 'শুশনি শাক' in Bengali. In parts of India it can be called sunisanakka In Indonesian it is semanggi, but this name also applies to Marsilea crenata. In Japanese it is nangokudenjiso and in Thai it is phakwaen. In Malaysian it is tapak itik. In the Philippines it is kaya-kayapuan.
Carex vestita, also commonly known as velvet sedge, is a tussock-forming species of perennial sedge in the family Cyperaceae. It is native to eastern parts of the United States.
