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Published In: Species Plantarum 2: 1052. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library


Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
General/Distribution: A genus of c. 30 species, distributed in temperate and tropical countries.


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Annual or perennial, polygamous herbs, often with uncinate hairs. Leaves 3-costate, exstipulate, alternate, entire. Inflorescence of 3-many flowered-small, axillary, bracteate cymes or in involucrate clusters with intermixed bisexual and unisexual flowers or only bisexual flowers. Calyx deeply (3-)4-lobed in male and hermaphrodite flowers; tubular and shallowly lobed in female flowers. Stamens as many as calyx lobes. Ovary free from calyx, ovule orthotropous, basal; style present or absent, stigma desely penicillate deciduous; pistillode globose in male flowers. Achene compressed, ovate, enveloped by calyx.

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1 Cymes lax, 3(-6)-flowered. Bracts cordate ovate, conspicuously enlarged in fruit
+ Cymes congested, 3-many-flowered. Bracts linear-lanceolate to elliptic, inconspicuously or not enlarged in fruit (2)
2 (1) Mostly all flowers bisexual in a cluster. Bracts ovate-lanceolate or elliptic, subconnate at the base Parietaria judaica
+ Lower flowers bisexual and upper female in a cluster. Bracts linear-lanceolate, free Parietaria lusitanica
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