Tropicos | Name - Spergula L.

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Spergula L.

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Published In: Species Plantarum 1: 440. 1753. (1 May 1753) (Sp. Pl.)

Project Name Data (Last Modified On 6/2/2011)

Acceptance : Accepted

Project Data (Last Modified On 6/3/2011)

Contributor Text: SHAHINA A. GHAZANFAR & YASIN J. NASIR

General/Distribution: A small genus centred in the temperate regions with 5 species, including S. arvensis a cosmopolitan weed. Represented in Pakistan by 2 species.

Comment/Acknowledgements: The frequently used characters of 3 styles and the capsule dehiscing by 3 valves do not hold good in our area in separating from Spergularia (styles 3, capsule dehiscing by 3 valves). The presence of connate stipules in Spergularia and stipules not connate in Spergula is more satisfactory in separating the genera as they occur in Pakistan.

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Annual or perennial herbs. Stems decumbent to ascending, often profusely branching at the base. Leaves opposite and decussate; stipules scarious, not connate at the base, short, axillary branches present. Sepals 5, green with hyaline margins. Petals 5, white, entire. Stamens 5-10. Styles 3-5(3 in Pakistan species). Capsule dehiscing by 3-5 valves (3 in Pakistan species). Seeds winged or not.

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1	Leaves not channeled beneath. Seeds keeled or with a narrow wing	2 Spergula arvensis
+	Leaves channeled beneath. Seeds broadly winged	1 Spergula fallax

Lower Taxa

Spergula arvensis L.
Spergula fallax (Lowe) E.H.L. Krause
Spergula pentandra L. = Spergula fallax (Lowe) E.H.L. Krause
Spergula saginoides L. = Sagina saginoides (L.) H. Karst.
Spergula vulgaris Boenn. = Spergula arvensis L.

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