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FOC | Family List | FOC Vol. 22 | Poaceae

108. Secale Linnaeus, Sp. Pl. 1: 84. 1753.

黑麦属 hei mai shu

Plants annual [rarely perennial]. Culms usually erect. Spike distichous, very dense; rachis usually very brittle, pubescent. Spikelets 1 per node, sessile, with 2 florets, occasionally with rudimentary 3rd floret. Glumes linear-subulate, keeled, hispid along keel, margin membranous, apex acuminate or awned. Lemma lanceolate, asymmetric, 5-veined with 2 marginal veins forming keels, hispid along keels, apex acuminate or tapering into long, straight, scabrous awn. Palea equaling lemma, smooth or scabrous along keels or ciliate distally, apex 2-dentate. Lodicules ciliate distally. Caryopsis oblong, somewhat laterally compressed, deeply furrowed, apex pubescent. x = 7.

About five species: mainly in temperate Europe and Asia; three species (two introduced) in China.

1 Glume apex long awned, awn 2–3 × as long as glume body.   3 S. sylvestre
+ Glume apex acuminate or shortly awned, awn very much shorter than lemma body   (2)
2 (1) Spike rachis tough.   1 S. cereale
+ Spike rachis fragile, or sometimes tough proximally.   2 S. segetale

Lower Taxa


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