Calystegia

Wildflowers Dicots Eudicots Asterids Solanales Convolvulaceae

False bindweeds

The flowers look almost exactly alike. The trick to differentiate them is to look at the bracts at the base of the flower (or the leaves). In C. macrostegia, C. malacophylla and C. soldanella the bracts clasp around the flower, while in C. purpurata the bracts look like tiny leaves below the base. In C. malacophylla the leaves and the stem are covered with small hairs. In C. soldanella the leaves are fleshy and heart-shaped.

C. macrostegia
California False Bindweed
C. malacophylla
Woolly Morning Glory
C. purpurata
Pacific False Bindweed
C. soldanella
Beach Morning Glory

Flower found at base of Rattlesnake Trail
(N34.4612592,W119.6910455,Alt: 316m)
4. Calyx=10mm, Corolla=45mm Calystegia
1. Bracts attached just below calyx and concealing most of it
9. bracts 12mm wide
13. strongly climbing
14. dry places C. macrostegia
16. bracts 12mm wide
18. bracts acute
19. leaf hairless
20. leaves >7mm C. macrostegia intermedia

Flower found near the top of Gibraltar Rd.
(N34.4827615,W119.6845507,Alt:941m)
Calyx=14mm, Corolla=41mm Calystegia
1. Bracts attached just below calyx and concealing most of it
9. bracts 13mm wide
13. strongly climbing
14. dry places C. macrostegia
16. bracts 13mm wide
18. bracts acute
19. leaf hairless
20. leaves C. macrostegia tenuifolia

Flower found on the back side of Romero Rd
(N34.4795914,W119.5674514,Alt:714m)
Calyx hidden, Corolla=36mm Calystegia
1. Bracts attached just below calyx and concealing most of it
9. bracts 7mm wide
13. not strongly climbing
21. leaves hairy
24. stem well developed
25. leaves not wavy C. malacophylla
26. leaf greyish, tip acute C. malacophylla pedicellata

Flower found on the backside of Cold Spring trail (at Camino Cielo)
(N34.4843696,W119.6389400,Alt:1042m)
(Also found down the front side as far (almost) as the base of Montecito Peak, Alt: 916m, and down at Forbush, Alt: 736m)
1. Bractlets > 1mm below calyx and not concealing it
2. Plant hairless
3. Bractlets linear
4. Strongly climbing vine C. purpurata
5. leaf triangular C. purpurata purpurata

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