Calystegia collina
| Calystegia collina | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Calystegia collina subsp. oxyphylla |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Calystegia collina | ||||||||||||
| ( Greene ) Brummitt |
Calystegia collina is a kind ofplantfrom the genus of the bindweed ( Calystegia ) from the family of the bindweed family (Convolvulaceae). The species is endemic to California .
description
Calystegia collina is a perennial plant that forms a rhizome as a perennial organ. The plant is densely tomentose with mostly long, brown trichomes . The stems grow prostrate and not or hardly climbing and are 8 to 30 cm long. The leaf blade of the leaves is usually less than 3 cm long, with indistinct lobes kidney-shaped to clearly lobed, the leaf margin is usually wavy.
The inflorescence stalks are shorter than 6 cm and occasionally larger than the accompanying leaves. The pre-leaves standing just below the calyx and partially encompassing it are 7 to 17 mm long, 2 to 14 mm wide with entire margins and more or less oval to broadly ovate. The sepals are 8 to 13 mm long, the crown is white and 25 to 55 mm long.
distribution
The species is endemic to California and occurs there in the North Coast Ranges, the San Francisco Bay Area and the South Coast Ranges at altitudes below 600 m. It grows in open, grassy or stony locations or in open oak and pine forests, often on serpentine soils .
Systematics
There are five subspecies:
- Calystegia collina subsp. apicum Brummitt & Namoff : It was first described in 2014 by San Benito County in California.
- Calystegia collina subsp. collina : It occurs in northern and central California.
- Calystegia collina subsp. oxyphylla Brummitt : It occurs in northwestern California.
- Calystegia collina subsp. tridactylosa (Eastw.) Brummitt : It occurs in northwestern California.
- Calystegia collina subsp. venusta Brummitt : It occurs in southwestern California.
literature
- Richard K.Brummitt: Calystegia collina . In: James C. Hickman (Ed.): The Jepson Manual - Higher Plants of California , University of California Press, 1993, ISBN 978-0-520-08255-7 .
Individual evidence
- ↑ a b c d e f Rafaël Govaerts (Ed.): Calystegia collina. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved November 19, 2017.