Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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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. purpurata (Greene) Brummitt

Perennial or subshrub from woody caudex, glabrous, often glaucous
Stem decumbent to strongly climbing, < 7 m
Leaf: blade generally 1.5–5 cm at midrib, triangular; lobes spreading, generally 2–3-tipped; sinus V-shaped or ± closed
Inflorescence: peduncle 1–5-flowered, generally >> subtending leaf; bractlets attached 3–16 mm below calyx, generally not overlapping it, 2–16 mm, 0.4–1.5 mm wide, generally linear
Flower: sepals 7–14 mm; corolla 23–52 mm, white or cream to purple (often ± purple-striped)
Ecology: Chaparral, coastal scrub
Elevation: < 300 m.
Bioregional distribution: North Coast, Outer North Coast Ranges, Great Central Valley (Sutter Buttes), Central Coast, San Francisco Bay Area, Outer South Coast Ranges, n South Coast, w Western Transverse Ranges.Sspp. intergrade.

Native

subsp. saxicola (Eastw.) Brummitt


Stem trailing or weakly climbing, < 1 m
Leaf ovate-triangular to reniform; sinus generally ± closed; tip generally notched to rounded; lobes rounded; margin ± wavy
Inflorescence: bractlets often ± alternate, generally lobed ± like leaves
Ecology: Rocky coastal scrub
Elevation: < 100 m.
Bioregional distribution: s&c North Coast, n Central Coast (Brooks Island, Contra Costa Co.), n San Francisco Bay Area
Synonyms: Convolvulus occidentalis var. s. (Eastw.) J.T. Howell
Horticultural information: 17.

Information on Distribution was contributed by Chris Thayer (Nov 20 2003):
It has just come to my attention that Calystegia purpurata saxicola shows up on the CNDDB at Brooks Island (Tidestrom 1893 - UC #23157)
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for CALYSTEGIA%20purpurata%20subsp.%20saxicola being generated
 
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Calystegia purpurata subsp. saxicola
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