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Any of various succulent plants of the genus Portulaca, especially P. grandiflora of South America, cultivated for its showy colorful flowers that open only in sunlight. Also called moss rose, rose moss.

[Middle English, from Latin portulāca, purslane, from portula, diminutive of porta, gate (from the gatelike covering of the seed capsule); see per- in Indo-European roots.]


(ˌpɔːtjʊˈlækə; -ˈleɪkə)
(Plants) any portulacaceous plant of the genus Portulaca, such as rose moss and purslane, of tropical and subtropical America, having yellow, pink, or purple showy flowers
[C16: from Latin: purslane]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.portulaca - a plant of the genus Portulaca having pink or red or purple or white ephemeral flowersportulaca - a plant of the genus Portulaca having pink or red or purple or white ephemeral flowers
flower - a plant cultivated for its blooms or blossoms
genus Portulaca - genus of mainly tropical fleshy or trailing herbs
Portulaca grandiflora, rose moss, sun plant - widely cultivated in many varieties for its fleshy moss-like foliage and profusion of brightly colored flowers
References in classic literature ?
Then there are to be eschscholtzias, dahlias, sunflowers, zinnias, scabiosa, portulaca, yellow violas, yellow stocks, yellow sweet-peas, yellow lupins--everything that is yellow or that has a yellow variety.
0,032 0,002 0,000 0,001 93 Amaranthus viridis 0,032 0,002 0,000 0,001 94 Achyranthes indica 0,008 0,004 0,000 0,001 95 Chamaecrista aeschino 0,020 0,002 0,000 0,001 96 Digitaria horizontale 0,020 0,002 0,000 0,001 97 Trianthema portulacas 0,016 0,002 0,000 0,001 98 Vernonia cinerea 0,016 0,002 0,000 0,001 99 Dactyloctenium aegypt 0,016 0,002 0,000 0,001 100 Spigelia anthelmia 0,012 0,002 0,000 0,001 101 Mitracarpus villosus 0,012 0,002 0,000 0,001 102 Cyperus difformis 0,008 0,002 0,000 0,001 103 Setaria viridis 0,004 0,002 0,000 0,001 Frec.
A few have been around for years, notably hardy hens-and-chicks or tender portulacas.
Begonias, petunias, snapdragons and portulacas, as well as the cool-temperature tolerant pansies, violas, carnations and dusty millers, can be started now.
Flowers such as four-o'clocks and portulacas invented the fluorescent look long before the psychedelic 1960s with its black light posters, new research shows.
The long rows of zinnias, portulacas, bee-balm, petunias, and nasturtiums pattern a gay flag at the foot of the terrace, and in the back garden the vines hang heavy with tomatoes, and the bold yellow of squash already ripe speckles the shadows under the great dark leaves.
That's the way I look at it, anyway--as I have explained (and explained, and explained) to this woman who never returns from shopping without pansies, petunias, or portulacas sprouting out of one of her half-dozen shopping bags.
Ageratum, dusty miller, dahlias, asters, celosias, dianthus, annual phlox, portulacas, violas, salvias and snapdragons are representative types that can be sown this month.
I covered a bare little hill with a cinnamon-wine celosia, the daintiest cherry red and green cloak imaginable, and portulacas grew beside it and whirlybird nasturtiums.