Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
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  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

CONVOLVULACEAE

MORNING-GLORY FAMILY

Lauramay T. Dempster (except Calystegia)

Perennial (annual), generally twining or trailing
Leaves alternate
Inflorescence: cyme or flowers solitary in axils; pedicels often with 2 bracts
Flower bisexual, radial; sepals 5, ± free, overlapping, persistent, often unequal; corolla generally showy, generally bell-shaped, ± shallowly 5-lobed, generally pleated and twisted in bud; stamens 5, epipetalous; pistil 1, ovary superior, chambers generally 2, ovules generally 2 per chamber, styles 1–2
Fruit: generally capsule
Seeds 1–4(6)
Genera in family: 50 genera, 1,000 species: warm temp to tropical; some cultivated as ornamental
Recent taxonomic note: Recently treated to include Cuscutaceae [Angiosperm Phylogeny Group 1998 Ann Missouri Bot Gard 85:531–553].
(Family description, key to genera by L.T. Dempster)

CALYSTEGIA

MORNING-GLORY

Richard K. Brummitt

Perennial, subshrub from caudex or rhizome, glabrous to tomentose
Stem very short to high-climbing, generally twisting and twining
Leaf generally > 1 cm, linear to reniform, often sagittate to hastate, rarely deeply divided
Inflorescence: peduncle generally 1-flowered; bractlets small and remote from calyx to large and concealing calyx, sometimes lobed
Flower generally showy; corolla glabrous, white or yellow to pink or purple; ovary chamber 1 (septa generally incomplete), stigma lobes 2, generally swollen, cylindric or oblong, ± flattened
Fruit ± spheric, ± inflated
Seeds generally ± 4
Species in genus: ± 25 species: temp, worldwide
Etymology: (Greek: concealing calyx, from bractlets of some)
Reference: [Brummitt 1980 Kew Bull 35(2):327–328]
Intergradation common; intermediate forms often difficult to identify. Appears similar to Convolvulus , but anatomy suggests that the 2 genera are not very closely related.

Native

C. collina (Greene) Brummitt

Perennial from rhizome, generally densely tomentose; hairs generally long, brownish
Stem decumbent, 8–30 cm, not or weakly climbing
Leaf generally < 3 cm at midrib, reniform (basal lobes indistinct) to distinctly lobed; margin generally wavy
Inflorescence: peduncle < 6 cm, sometimes > subtending leaf; bractlets 7–17 mm, 2–14 mm wide, ± linear to widely ovate, entire, attached just below calyx, partly to entirely concealing it
Flower: sepals 8–13 mm; corolla 25–55 mm, white
Ecology: Open grassy or rocky places or in open oak/pine woods, often on serpentine
Elevation: < 600 m.
Bioregional distribution: North Coast Ranges, San Francisco Bay Area, South Coast Ranges
Synonyms: Convolvulus c. Greene; C. malacophyllus subsp. c. (Greene) Abrams

Native

subsp. venusta Brummitt

SOUTH COAST RANGE MORNING-GLORY

Plant finely tomentose or ± silky; hairs short, brownish to whitish
Stem 8–30 cm
Leaf ± triangular to ± reniform; lobes distinct or not
Inflorescence: bractlets 8–16 mm, 4–10 mm wide, lanceolate to widely ovate, ± flat, spreading, so not concealing calyx
Flower: sepals finely tomentose; corolla 25–44 mm
Ecology: UNCOMMON. Habitat of sp.
Bioregional distribution: South Coast Ranges.Probably intergrades with C. subacaulis subsp. s. and C. malacophylla subsp. pedicellata
Horticultural information: TRY.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for CALYSTEGIA%20collina%20subsp.%20venusta being generated
 


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