Английская Википедия:Ferocactus townsendianus

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Ferocactus townsendianus, commonly known as the Townsend barrel cactus, is a species of cactus endemic to southern Baja California Sur in Mexico. It is a barrel cactus that grows solitary stems up to Шаблон:Convert tall, with gray to brown spines, with one central spine on each areole usually curved or hooked at the tip, and orange to red flowers that bloom from May to August. Ferocactus townsendianus is similar to both Ferocactus peninsulae and Ferocactus santa-maria, and is sometimes placed under peninsulae as a variety or subspecies.

Description

Ferocactus townsendianus is a solitary-stemmed barrel cactus with short-cylindric to slightly conical stems, usually to Шаблон:Cvt tall but sometimes to Шаблон:Cvt. It has up to 16 ribs, often spiraled or somewhat undulate. The areoles are large and distant, with gray to brown spines. There are up to 16 radial spines, slender and widely spreading, and up to Шаблон:Cvt long. There are 3 to 4 central spines, with the principal spine typically curved or hooked at the apex (but sometimes straight) and the others straight. The central spines have an annulate texture.

The flowers appear from May to August, and are orange to red, measuring Шаблон:Cvt long. The outer perianth segments are shaped ovate and have a reddish color with yellow on the margins, while the inner perianth segments are shaped oblong-lanceolate and have a narrow pink stripe down the center with yellow margins. The filaments and style are dark pink. The almost globular fruit is Шаблон:Cvt long and yellow.

• Ferocactus townsendianus in flower, with some fruits also visible

  Ferocactus townsendianus in flower, with some fruits also visible

• Flower closeup

  Flower closeup

• Fruits

  Fruits

• Plant growing in the Jardin de Cactus in Guatiza on Lanzarote, The Canary Islands, Spain

  Plant growing in the Jardin de Cactus in Guatiza on Lanzarote, The Canary Islands, Spain

• Adult plant

  Adult plant

Taxonomy

Taxonomic history

Ferocactus townsendianus was described by Nathaniel Lord Britton and Joseph Nelson Rose in their third volume of The Cactaceae in 1922. The type specimen was collected on Isla San José by Rose in March 1911 while visiting the Gulf of California on the USS Albatross.

The specific epithet is named in honor of Charles H. Townsend, the director of the New York Aquarium, who was in charge of the scientific work of the Albatross when the ship was in the waters of the Baja California Peninsula, when Rose discovered the plant.

Distribution and habitat

Ferocactus townsendianus is endemic to the state of Baja California Sur in Mexico. It ranges from the vicinity of Loreto and San Juanico to the southern Sierra de la Giganta and south into the Cape region. It is also present on Isla San José in the Gulf of California, and Isla Santa Margarita and Isla Magdalena in the Magdalena Bay on the Pacific coast.

• Plant growing in El Triunfo, Baja California Sur

  Plant growing in El Triunfo, Baja California Sur

• Plant growing near La Paz, Baja California Sur

  Plant growing near La Paz, Baja California Sur

External links

• Шаблон:Commons category-inline
• Шаблон:Wikispecies-inline