| 释义 |
‖ Portulaca|pɔətjuːˈleɪkə|
Also (erron.) portulacca.
[L. portūlāca purslain (P. oleracea): taken by Tournefort, 1700, as a generic name.]
A genus of plants, comprising low succulent herbs bearing white, yellow, red, or purple terminal flowers, expanding only once in direct sunshine; esp. a plant of a cultivated species of this genus.
1548Turner Names of Herbes (E.D.S.) 65 Portulaca is called in english purcellaine. 1706Phillips, Portulaca, Purslain, a cold and moist Herb, which stirs up the Appetite. 1866Harvard Mem. Biogr., Savage I. 337 My Heliotrope is magnificent and portulacas begin to make a show. 1882Garden 8 Apr. 234/2 Of all annuals that can be grown out of doors I know of none more beautiful than Portulacas. 1927M. M. Bennett Christison xi. 116 They ate portulacca to keep off scurvy. 1939R. Godden Black Narcissus xix. 173 Lupins, delphiniums..and the portulaca she had grown to love in the plains. 1942E. Afr. Ann. 1941–2 44/1 The indigenous portulaca found all round Nairobi with its masses of yellow flowers is very fascinating. 1953Arena (Wellington, N.Z.) xxxv. 4 ‘And your lovely portulacca,’ Hester said gently, ‘I had forgotten you always grew it.’ 1962[see cleome]. 1974J. Berrisford Window Box & Container Gardening xix. 143 The annual portulacas..are suitable for seasonal use. 1978Detroit Free Press 16 Apr. (Gardening Guide) 10/1 If you want to enjoy your garden in the evening, don't plant flowers such as day lilies, morning glories and portulacca that are closed at night.
Hence portulaceous |-ˈeɪʃəs| a. Bot., of or pertaining to the family Portulaceæ, comprising succulent shrubs and herbs, chiefly American, but distributed in all parts of the world.
1852Th. Ross Humboldt's Trav. I. vi. 203 Most of the portulaceous plants which grow on the banks of the gulf of Cariaco. 1858in Mayne Expos. Lex. |