Astrophytum | |
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Astrophytum myriostigma | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Order: | Caryophyllales |
Family: | Cactaceae |
Subfamily: | Cactoideae |
Tribe: | Cacteae |
Genus: | Astrophytum Lem. [1] |
Type species | |
Astrophytum myriostigma | |
Species | |
A. asterias Contents |
Astrophytum is a genus of six species of cacti, native to North America. [2]
These species are sometimes referred to as living rocks, though the term is also used for other genera, particularly Lithops (Aizoaceae). The generic name is derived from the Greek words άστρον (astron), meaning "star," and φυτόν (phyton), meaning "plant."
The species of the genus Astrophytum usually grow individually with spherical to columnar green shoots and reach heights of up to 1.5 meters. The shoots are often densely covered with fine white tufts of hair, but sometimes they are completely bald. There are four to ten (rarely three) very noticeable ribs that are not divided into cusps. The large areoles stand close together, but do not merge. The spike is variable. Spines may be present or may be missing entirely.
The funnel-shaped, large flowers are yellow or yellow with a red throat. They appear at the top of the shoots and open during the day. The pericarpel is covered with pointed scales. The cap-shaped seeds have a diameter of up to 2.5 millimeters with a brownish black seed coat which is almost smooth. The edge is rolled towards the sunken hilum.
Image | Hi | Common Name | Distribution |
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Astrophytum asterias (Zucc.) Lem. | Sand dollar cactus, sea urchin cactus, star peyote | small parts of Texas in the United States and Mexico. | |
Astrophytum capricorne (A.Dietr.) Britton & Rose | Goat's horn cactus | Coahuila regions of Northern Mexico. | |
Astrophytum caput-medusae D.R.Hunt | Nuevo León, Mexico | ||
Astrophytum coahuilense (H.Moeller) Kanfer | Coahuila and Durango, Mexico | ||
Astrophytum myriostigma Lem. | Bishop's cap cactus, bishop's hat, bishop's mitre cactus | northeastern and central Mexico. | |
Astrophytum ornatum (DC.) Britton & Rose– Monk's hood [2] | bishop's cap or monk's hood cactus | Central Plateau of Mexico. | |
The genus has several synonyms:
There are a number of species synonyms sometimes seen:
Allamanda is a genus of flowering plants in the family Apocynaceae. They are native to the Americas, where they are distributed from Mexico to Argentina. Some species are familiar as ornamental plants cultivated for their large, colorful flowers. Most species produce yellow flowers; A. blanchetii bears pink flowers. The genus name Allamanda honors the Swiss botanist and physician Frédéric-Louis Allamand (1736–1809). It is the official flower of Kuching North City Hall.
The Onagraceae are a family of flowering plants known as the willowherb family or evening primrose family. They include about 650 species of herbs, shrubs, and trees in 17 genera. The family is widespread, occurring on every continent from boreal to tropical regions.
Echinocactus is a genus of cacti in the subfamily Cactoideae. The generic name derives from the Ancient Greek ἐχῖνος (echînos), meaning "spiny," and cactus. It and Ferocactus are the two genera of barrel cactus. Members of the genus usually have heavy spination and relatively small flowers. The fruits are copiously woolly, and this is one major distinction between Echinocactus and Ferocactus. Propagation is by seed.
Ferocactus is a genus of large barrel-shaped cacti, mostly with large spines and small flowers. There are about 30 species included in the genus. They are found in the southwestern United States and northwestern Mexico.
Parkinsonia, also Cercidium, is a genus of flowering plants in the pea family, Fabaceae. It contains about 12 species that are native to semi-desert regions of Africa and the Americas. The name of the genus honors English apothecary and botanist John Parkinson (1567–1650).
Echinocereus is a genus of ribbed, usually small to medium-sized, cylindrical shaped cacti, comprising about 70 species native to the southern United States and Mexico in very sunny, rocky places. Usually the flowers are large and the fruit edible.
Sapindus is a genus of about five to twelve species of shrubs and small trees in the lychee family, Sapindaceae, native to warm temperate to tropical regions of the world. The genus includes both deciduous and evergreen species. Members of the genus are commonly known as soapberries or soapnuts because the fruit pulp is used to make soap. The generic name is derived from the Latin words sapo, meaning "soap", and indicus, meaning "of India".
Nyctaginaceae, the four o'clock family, is a family of around 33 genera and 290 species of flowering plants, widely distributed in tropical and subtropical regions, with a few representatives in temperate regions. The family has a distinctive fruit type called an accessory fruit or anthocarp, and many genera have extremely large pollen grains.
Thelocactus is a genus of flowering plants in the cactus family Cactaceae. Members of the genus are native to the arid lands of Central and Northern Mexico.
Ipomoea violacea is a perennial species of Ipomoea that occurs throughout the world with the exception of the European continent. It is most commonly called beach moonflower or sea moonflower as the flowers open at night.
Brahea is a genus of palms in the family Arecaceae. They are commonly referred to as hesper palms and are endemic to Mexico and Central America. All Hesper Palms have large, fan-shaped leaves. The generic name honours Danish astronomer Tycho Brahe (1546-1601).
Astrophytum asterias is a species of cactus in the genus Astrophytum, and is native to small parts of Texas in the United States and Mexico. Common names include sand dollar cactus, sea urchin cactus, star cactus and star peyote.
Casearia is a plant genus in the family Salicaceae. The genus was included in the Flacourtiaceae under the Cronquist system of angiosperm classification, and earlier in the Samydaceae.
Oxalis stricta, called the common yellow woodsorrel, common yellow oxalis, upright yellow-sorrel, lemon clover, or more ambiguously and informally "sourgrass", "sheep weed", or "pickle plant", is a herbaceous plant native to North America, parts of Eurasia, and a rare introduction in Britain. It tends to grow in woodlands, meadows, and in disturbed areas as both a perennial and annual. Erect when young, this plant later becomes decumbent as it lies down, and branches regularly. It is not to be confused with similar plants in the same genus which are also often referred to as "yellow woodsorrel".
Ammandra is a monotypic genus of flowering plants in the palm family found in Colombia and Ecuador, where it is endangered. The sole species is Ammandra decasperma, although another species name has been proposed. It is a pinnate-leaved, dioecious palm whose seeds and petioles are used in button and basket making, respectively. It is commonly called ivory palm or cabecita.
Tithonia is a genus of flowering plants in the tribe Heliantheae within the family Asteraceae.
Butia paraguayensis is a species of Butia palm tree found in the cerrado region of South America. Its natural range runs from Mato Grosso do Sul and São Paulo in southern Brazil through Paraguay to northern Argentina and Uruguay. It was given the name dwarf yatay palm in English by 2000, and it is locally known as yata'i in Guaraní in Paraguay, or butiá-do-cerrado in Portuguese in Rio Grande do Sul, Brazil.
Chiococca alba is a species of flowering plant in the coffee family (Rubiaceae) native to Florida and the extreme southern tip of Texas in the United States, Bermuda, Mexico, Central America, the Caribbean, the Galápagos, and tropical South America. Common names include David's milkberry, West Indian milkberry, cahinca and West Indian snowberry. The specific epithet, alba, means "white" in Latin and refers to the color of its fruits.
Cryptostegia is a genus of flowering plants native to tropical Africa and Madagascar. The genus is in the family Apocynaceae.
Blitum is a genus of flowering plants in the amaranth family Amaranthaceae, subfamily Chenopodioideae. It is closely related to genus Spinacia. Its 12 species were traditionally placed in the genera Chenopodium, Monolepis, or Scleroblitum. The species of genus Blitum occur in Asia, Europe, North Africa, the Americas, and Australia.