4. Spergularia (Persoon) J. & C. Presl, Fl. Cech. 94. 1819.
[nom. cons.]
拟漆姑属 ni qi gu shu
Lu Dequan; Richard K. Rabeler
Arenaria Linnaeus subgen. Spergularia Persoon, Syn. Pl. 1: 504. 1805; Buda Adanson, nom. rej.; Tissa Adanson, nom. rej.
Herbs annual or perennial. Stems erect, decumbent, or procumbent, dilated at nodes, somewhat flattened. Leaves decussate, linear; stipules pale, scarious, connate around nodes, forming ± triangular structures on either side of stem; leaf fascicles (short, leafy lateral branches) when present borne on only one side at each node. Inflorescence of racemose cymes; bracts immediately subtending calyx absent. Sepals 5, free, green, margin scarious. Petals 5, white or pink, entire. Stamens 2--5 or 10. Ovary 1-loculed; ovules numerous; styles 3. Capsule ovoid, opening by 3 valves. Seeds numerous, flat, winged or not; embryo curved.
About 25 species: N temperate regions, mostly halophytes; four species in China.
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| 1 |
Sepals 5--7 mm; capsule 1.5--2 × as long as calyx; stamens (5 or)10; all or most seeds winged |
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3 S. media |
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Sepals 1.5--4.5 mm; capsule ca. equaling or slightly longer than calyx; stamens 2--5 or 10; all or most seeds unwinged. |
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(2) |
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| 2 (1) |
Leaves fasciculate; stipules lanceolate, silvery; stamens (5 or)10 |
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1 S. rubra |
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Leaves not or rarely fasciculate; stipules triangular (rarely lanceolate), not silvery; stamens 2--5. |
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(3) |
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| 3 (2) |
Capsule 1.5--3 mm, equaling calyx; seeds dark brown to black, unwinged |
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2 S. diandra |
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Capsule 5--6 mm, slightly longer than calyx; seeds light brown, mostly unwinged |
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4 S. marina |
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Lower Taxa
