千岛碱茅 qian dao jian mao

Atropis kurilensis Takeda, J. Linn. Soc., Bot. 42: 497. 1914; Puccinellia kamtschatica Holmberg var. sublaevis Holmberg; ?P. pumila (Vasey) Hitchcock; ?P. adpressa Ohwi.

Perennial, loosely tufted. Culms erect, 10–40 cm tall, uppermost node at about middle of culm. Ligule 1.5–3 mm; leaf blade flat, thin, 6–10 cm, 2–3 mm wide, adaxial surface scabrid. Panicle contracted, 5–15 cm, lower part often enclosed in uppermost leaf sheath; branches 2–6 cm, spreading at maturity, smooth or upper part slightly scabrid. Spikelets 6–8 mm, florets 4–7(–9); lower glume 1.5–3 mm, upper glume 2–3.5 mm; lemmas 2.7–3.5(–4) mm, green, margins later golden, veins conspicuously raised, sparsely pubescent along lower part of veins, apex acuminate; palea keels scabrid upward; anthers 0.7–1.2 mm. 2n = 42, 56.

Seashores, gravel meadows. Heilongjiang, Liaoning [Japan, Korea, Russia (Far East); North America].