Thompsonella

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Thompsonella
Thompsonella sp. (PCR-4914, PUE, San Jose Miahuatlan).jpg
Thompsonella minutiflora
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Core eudicots
Order: Saxifragales
Family: Crassulaceae
Genus:Thompsonella
Britton & Rose
Species

Thompsonella is a genus of family Crassulaceae. It includes about eight species endemic to Mexico. [1]

Family is one of the eight major hierarcical taxonomic ranks in Linnaean taxonomy; it is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as being the "walnut family".

Crassulaceae A family of flowering plants comprising members popular for horticulture and characterized by a peculiar photosynthetic metabolism adapted to arid conditions

The Crassulaceae, also known as the stonecrop family or the orpine family, are a family of dicotyledons with succulent leaves. They are generally herbaceous but there are some subshrubs, and relatively few treelike or aquatic plants. They are found worldwide, but mostly occur in the Northern Hemisphere and southern Africa, typically in dry and/or cold areas where water may be scarce. The family includes approximately 1400 species and 34 or 35 genera., although the number of genera is disputed and depends strongly on the circumscription of Sedum.

In biology, a species ( ) is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. While these definitions may seem adequate, when looked at more closely they represent problematic species concepts. For example, the boundaries between closely related species become unclear with hybridisation, in a species complex of hundreds of similar microspecies, and in a ring species. Also, among organisms that reproduce only asexually, the concept of a reproductive species breaks down, and each clone is potentially a microspecies.

Related Research Articles

Saxifragales order of plants

The Saxifragales are an order of flowering plants. Their closest relatives are a large eudicot group known as the rosids by the definition of rosids given in the APG II classification system. Some authors define the rosids more widely, including Saxifragales as their most basal group. Saxifragales is one of the eight groups that compose the core eudicots. The others are Gunnerales, Dilleniaceae, Rosids, Santalales, Berberidopsidales, Caryophyllales, and Asterids.

<i>Kalanchoe</i> genus of plants

Kalanchoe, or kal-un-KOH-ee, or kal-un-kee, also written Kalanchöe or Kalanchoë, is a genus of about 125 species of tropical, succulent flowering plants in the family Crassulaceae, mainly native to Madagascar and tropical Africa. Kalanchoe was one of the first plants to be sent into space, sent on a resupply to the Soviet Salyut 1 space station in 1971.

<i>Aeonium</i> genus of plants

Aeonium is a genus of about 35 species of succulent, subtropical plants of the family Crassulaceae. Many species are popular in horticulture. The genus name comes from the ancient Greek "aionos" (ageless). While most of them are native to the Canary Islands, some are found in Madeira, Morocco, and in East Africa.

<i>Monanthes</i> genus of plants

Monanthes is a genus of small, succulent, subtropical plants of the Crassulaceae family. The about ten species are mostly endemic to the Canary Islands and Savage Islands, with some found on Madeira. Its center of diversity is Tenerife, with seven species occurring on this island. On Fuerteventura and Lanzarote, only M. laxiflora occurs.

<i>Sedum</i> A genus of flowering plants belonging to the stonecrop family and comprising succulent species

Sedum is a large genus of flowering plants in the family Crassulaceae, members of which are commonly known as stonecrops. The genus has been described as containing up to 600 species updated to 470. They are leaf succulents found primarily in the Northern Hemisphere, but extending into the southern hemisphere in Africa and South America. The plants vary from annual and creeping herbs to shrubs. The plants have water-storing leaves. The flowers usually have five petals, seldom four or six. There are typically twice as many stamens as petals.

<i>Echeveria</i> genus of plants

Echeveria is a large genus of flowering plants in the stonecrop family Crassulaceae, native to semi-desert areas of Central America, Mexico and northwestern South America.

Antonina Georgievna Borissova (1903–1970) was a Russian botanist, specialising in the flora of the deserts and semi-desert of central Asia. Borissova authored 195 land plant species names, the ninth-highest number of such names authored by any female scientist.

<i>Aeonium arboreum</i> species of plant

Aeonium arboreum, the tree aeonium, tree houseleek, or Irish rose, is a succulent, subtropical subshrub in the flowering plant family Crassulaceae. It is native to the hillsides of the Canary Islands, where it is known as bejeque arboreo and introduced in the Mediterranean It bears rosettes of leaves and large pyramidal panicles of bright yellow flowers in the spring. In temperate regions it needs to be grown under glass. The purple cultivar 'Zwartkop' ('Schwartzkopf') has gained the Royal Horticultural Society's Award of Garden Merit. and a variegated form is grown as cultivar 'variegatum'.

<i>Aeonium nobile</i> species of plant

Aeonium nobile is a succulent, subtropical flowering plant in the family Crassulaceae. It is native to the island of La Palma in the Canary Islands, where it grows on dry slopes and cliffs at altitudes up to 800m. The inflorescences are large and spreading with bright red flowers.

Daigremontianin chemical compound

Daigremontianin is a bufadienolide. Bufadienolides are steroids and cardiac glycoside aglycones that are similar to cardenolides, differing only in the structure of the C-17 substituent on the D ring. This chemical has been found to be toxic in experiments on mice. It is one of five bufadienolides that have been isolated from Kalanchoe daigremontiana.

<i>Kalanchoe farinacea</i> species of plant

Kalanchoe farinacea is a species of plant in the Crassulaceae family. It is endemic to the Yemeni island of Socotra. Its natural habitat is subtropical or tropical dry shrubland at an altitude of 100-800m. While it is listed by International Union for Conservation of Nature(IUCN) as belonging to the order Rosales, Kalanchoes and other Crassulaceae are more usually placed in Saxifragales.

Kalanchoe robusta is a species of plant in the Crassulaceae family. It is endemic to the Yemeni island of Socotra. Its natural habitat is on rocky slopes and amongst limestone boulders in dwarf shrubland and low succulent shrubland at an altitude of 300–750m. While it is listed by IUCN as belonging to the order Rosales, Kalanchoes and other Crassulaceae are more usually placed in Saxifragales.

Succulent plant plants having some parts that are more than normally thickened and fleshy

In botany, succulent plants, also known as succulents, are plants that have some parts that are more than normally thickened and fleshy, usually to retain water in arid climates or soil conditions. The word "succulent" comes from the Latin word sucus, meaning juice, or sap. Succulent plants may store water in various structures, such as leaves and stems. Some definitions also include roots, thus geophytes that survive unfavorable periods by dying back to underground storage organs may be regarded as succulents. In horticultural use, the term "succulent" is sometimes used in a way which excludes plants that botanists would regard as succulents, such as cacti. Succulents are often grown as ornamental plants because of their striking and unusual appearance.

<i>Aeonium leucoblepharum</i> species of plant

Aeonium leucoblepharum is a succulent flowering plant in the family Crassulaceae. The pointed leaves have a strong central stripe, and they may develops pinkish colour on exposure to strong sunlight. There are variants with less pointed leaves but still with the central stripe. The flowers are yellow, 7- to 10-merous, with petals 6 – 8 x 1.8 – 2.5 mm. The species is native to mountains in Yemen and north-eastern Africa, from Ethiopia and Somalia to Kenya and Uganda. It is also known as Sempervivum leucoblepharum and Sempervivum chrysanthum.

<i>Kalanchoe rhombopilosa</i> species of plant

Kalanchoe rhombopilosa is a succulent plant species in the Crassulaceae family. This species of plant is endemic to southwest Itampolo, Madagascar. The species was described by Mannoni & Boiteau in 1947 and is indexed in Notul. Syst. (Paris) 13:153-154, (1947). The plant is a herbaceous perennial that grows to 10–20 cm in height.

Reid Venable Moran U.S. botanist (1916–2010)

Reid Venable Moran was an American botanist and the curator of botany at the San Diego Natural History Museum from 1957 to 1982.

<i>Echeveria runyonii</i> species of plant

Echeveria runyonii is a species of flowering plant in the sedum family, Crassulaceae, that is native to the state of Tamaulipas in Mexico. Several cultivars have been described and cultivated.

<i>Echeveria nodulosa</i> species of plant

Echeveria nodulosa, the painted echeveria, is a plant in the Crassulaceae family. It is native to Mexico.

<i>Echeveria gibbiflora</i> species of plant

Echeveria gibbiflora is a species of flowering plant in the stonecrop family, Crassulaceae. It was described by Swiss botanist Augustin Pyramus de Candolle in 1828. It occurs in Mexico and Guatemala.

References