Calystegia subacaulis
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Calystegia subacaulis |
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Calystegia subacaulis 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 subacaulis is a more or less hairy, perennial plant that forms a rhizome or a woody caudex as a perennial organ. The stems are prostrate or ascending and are 2 to 20 cm long. The leaf blade has a length of 3 to 4 cm, is more or less triangular-spear-shaped and occasionally covered with small, backward-directed lobes. The leaves are pointed or rounded towards the front, the base is conically tapered.
The inflorescence stalks are up to 3.3 cm long and do not protrude beyond the surrounding leaves. The prophylls are 7 to 17 mm long, 4 to 9 mm wide, broadly ovate to lanceolate or elongated. They sit directly below the chalice and enclose it. The sepals are 10 to 13 mm long. The crown is white or cream-colored, often tinged purple on the central veins of the petals. It is 33 to 62 mm long.
The number of chromosomes for Calystegia subacaulis subsp. subacaulis 2n = 22.
distribution
The species is endemic to California in the southern North Coast Ranges, the San Francisco Bay Area, and the middle Outer South Coast Ranges. It grows there in dry, open shrub or woodland.
Systematics
One can distinguish between two subspecies:
- Calystegia subacaulis subsp. episcopalis Brummitt : It occurs in California only in San Luis Obispo County .
- Calystegia subacaulis subsp. subacaulis : It occurs in central and western California.
literature
- Richard K.Brummitt: Calystegia subacaulis . 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
- ↑ Calystegia subacaulis subsp. subacaulis at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ a b c Rafaël Govaerts (Ed.): Calystegia subacaulis. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved November 20, 2017.