Spergularia in Flora of China @ efloras.org

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.

1 Sepals 5--7 mm; capsule 1.5--2 × as long as calyx; stamens (5 or)10; all or most seeds winged 3 S. media

+ Sepals 1.5--4.5 mm; capsule ca. equaling or slightly longer than calyx; stamens 2--5 or 10; all or most seeds unwinged. (2)

2 (1) Leaves fasciculate; stipules lanceolate, silvery; stamens (5 or)10 1 S. rubra

+ Leaves not or rarely fasciculate; stipules triangular (rarely lanceolate), not silvery; stamens 2--5. (3)

3 (2) Capsule 1.5--3 mm, equaling calyx; seeds dark brown to black, unwinged 2 S. diandra

+ Capsule 5--6 mm, slightly longer than calyx; seeds light brown, mostly unwinged 4 S. marina

Lower Taxa

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