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CONVOLVULACEAE MORNING-GLORY FAMILY

Robert E. Preston, except as noted

Annual, perennial herb, subshrub, generally twining or trailing. Leaf: 0 or alternate. Inflorescence: cyme or flowers 1 in axils; bracts subtending flowers 0 or 2. Flower: bisexual, radial; sepals (4)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, each generally 2-ovuled, styles 1–2. Fruit: generally capsule. Seed: 1–4(6).
55–60 genera, 1600–1700 species: warm temperate to tropics; some cultivated for food or as ornamental (Ipomoea). [Stefanovic et al. 2003 Syst Bot 28:791–806] Monophyletic only if Cuscutaceae included, as treated here. Ipomoea cairica (L.) Sweet, Ipomoea hederacea Jacq. [Ipomoea nil L., misappl.], Ipomoea indica (Burm.) Merr. (including Ipomoea mutabilis Ker Gawl.), Ipomoea purpurea (L.) Roth, Ipomoea triloba L., all included in TJM (1993), not naturalized. —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Angiosperm Phylogeny Group 1998 Ann Missouri Bot Gard 85:531–553; Stefanovic et al. 2002 Amer J Bot 89:1510–1522]

Key to Convolvulaceae

CONVOLVULUS MORNING-GLORY, BINDWEED
Annual, perennial herb from caudex or rhizome, generally ± glabrous. Stem: generally trailing to high-climbing, generally twisting, twining. Leaf: generally > 1 cm, generally petioled, generally cordate or hastate. Inflorescence: bracts generally 2, > 1 mm below calyx, not hiding it. Flower: generally showy; corolla generally funnel-shaped, pleated, 5-angled or -lobed; stamens included; ovary chambers 2, septa complete, stigma lobes 2, linear to narrowly spoon-shaped, tips acute. Fruit: spheric, ± inflated. Seed: generally 4.
250 species: generally temperate. (Latin, entwine) Not easily distinguished from Calystegia.

Key to Convolvulus

C. simulans L.M. Perry SMALL-FLOWERED MORNING-GLORY
NATIVE
Annual, strigose. Stem: tufted, diffusely branched, 10–40 cm. Leaf: entire, generally < 6 cm, oblanceolate, ± sessile, narrowed to base. Inflorescence: peduncles 1-flowered, short, ± sharply nodding in fruit; bracts 3–7 mm, linear or narrowly oblanceolate, 2–5 mm below calyx. Flower: calyx lobes 3–4 mm, oblong-obovate; corolla ± 0.6 cm, bell-shaped, pale-pink or -blue, lobes ± 1/2 tube, ± ascending. Fruit: ± 7 mm.
Clay substrates, occasionally serpentine, annual grassland, coastal-sage scrub, chaparral; 30–875 m. s Sierra Nevada Foothills, San Joaquin Valley/Inner South Coast Ranges, San Francisco Bay Area, s Outer South Coast Ranges, South Coast, Channel Islands, Western Transverse Ranges, Peninsular Ranges; Arizona, Baja California. Apr–Jun [Online Interchange] {CNPS list}

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Next taxon: Convolvulus tricolor

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 21 2014
Citation for this treatment: [Author of taxon treatment] 2013. Convolvulus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=20208, accessed on Dec 21 2014

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click for enlargement Convolvulus simulans
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© 2003 Michael Charters

Geographic subdivisions indicated for the distribution of Convolvulus simulans Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.