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Historically, the same word was used by de Candolle to describe plants that require a moderate degree of heat for successful growth. [5] In his scheme, a mesotherm plant grew in regions where the warmest month had a mean temperature greater than 22 °C (72 °F) and the coldest month had a mean temperature of at least 6 °C (43 °F).
Thermogenic plants are also protogynous, meaning that the female part of the plant matures before the male part of the same plant. This reduces inbreeding considerably, as such a plant can be fertilized only by pollen from a different plant. This is why thermogenic plants release pungent odors to attract pollinating insects.
Under the original Köppen climate classification, all places with an average temperature in their coldest month that is colder than 18 °C (64 °F), but warmer than −3 °C (27 °F), are said to have a mesothermal climate.
Within a couple of years de Candolle had established a new genus, and he went on to document hundreds of plant families and create a new natural plant classification system. Although de Candolle's main focus was botany, he also contributed to related fields such as phytogeography, agronomy, paleontology, medical botany, and economic botany.
Calluna vulgaris, common heather, ling, or simply heather, [1] is the sole species in the genus Calluna in the flowering plant family Ericaceae.It is a low-growing evergreen shrub growing to 20 to 50 centimetres (8 to 20 in) tall, or rarely to 1 metre (40 in) and taller, [2] and is found widely in Europe and Asia Minor on acidic soils in open sunny situations and in moderate shade.
The first taxonomic system by de Candolle, who introduced the term taxonomy, appeared in his description of the plants of France, his Flore française (1805–1815), in 5 volumes dealing with plant species found in France. The De Candolle system is a subsequent taxonomic system.
The name "bearberry" for the plant derives in part from the edible fruit which is a food for bears. [2] The fruits are gathered as food for humans, and the leaves are used in indigenous herbal medicine. [1] The alpine bearberry Arctostaphylos alpina (L.) Spreng (syn. Arctous alpinus (L.) Niedenzu) is a procumbent shrub 10–30 cm high (3.9–11 ...
Maize (Zea mays, Poaceae) is the most widely cultivated C 4 plant.[1]In botany, C 4 carbon fixation is one of three known methods of photosynthesis used by plants. C 4 plants increase their photosynthetic efficiency by reducing or suppressing photorespiration, which mainly occurs under low atmospheric CO 2 concentration, high light, high temperature, drought, and salinity.
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