Sclerocactus parviflorus subsp. macrospermus

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Sclerocactus parviflorus subsp. macrospermus
Sclerocactus parviflorus subsp. macrospermus (fh 69.02 UT) in flower in May in Utah

Sclerocactus parviflorus subsp. macrospermus (fh 69.02 UT)
in flower in May in Utah

Systematics
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cacteae
Genre : Sclerocactus
Type : Sclerocactus parviflorus
Subspecies : Sclerocactus parviflorus subsp. macrospermus
Scientific name
Sclerocactus parviflorus subsp. macrospermus
( Hochstätter ) Hochstätter

Sclerocactus parviflorus subsp. macrospermus is an endangered subspecies of the Sclerocactus parviflorus plant in the cactus family(Cactaceae). The subspecies is named after the large seeds. An English common name is "Green River Cactus".

description

Sclerocactus parviflorus subsp. macrospermus grows individually spherical to elongated. It becomes 5 to 18 cm long and 5 to 15 cm in diameter. The purple, bell-shaped flowers are 3 to 4 cm long and in diameter.

The flowers appear in a wreath around the apex. The occurrence of the subspecies is limited and restricted to heights of up to 1300 m. The unusually large seeds are characteristic . In the south of the occurrence there are intermediate forms that are related to Sclerocactus wrightiae . The flowering time is in May.

distribution

Sclerocactus parviflorus subsp. macrospermus growing endemic in the Great Basin Desert in Utah near the Green River on plains or low hills at elevations from 1,200 to 1,300 meters.

Systematics

The description as Sclerocactus parviflorus subsp. macrospermus was made in 2005 by Fritz Hochstätter.

A synonym is Sclerocactus parviflorus f. macrospermus Hochstätter (1998).

photos

Sclerocactus parviflorus subsp. macrospermus :

  • Blooming in its youthful stage in Utah.

  • At the site in Utah with the Sego lily ( Calochortus nuttallii ).

literature

  • Fritz Hochstätter (Ed.): At the locations of Pediocactus and Sclerocactus . Self-published, 1989.
  • Fritz Hochstätter (Ed.): To the habitats of Pediocactus and Sclerocactus . Self-published, 1990.
  • Fritz Hochstätter (Ed.): The Genus Sclerocactus . Self-published, 1993.
  • Fritz Hochstätter (Ed.): The Genus Sclerocactus . English with a German summary. Self-published, 2005, ISBN 3-000161538 .

Individual evidence

  1. ^ The Genus Sclerocactus 27. 2005.
  2. ↑ Cactaceae Review IRT 1 (1): 4-19. 1998.

Web links

Commons : Sclerocactus parviflorus subsp. macrospermus  - collection of pictures, videos and audio files