Comments
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Löve (Feddes Repert. 95: 454. 1984) did not previously validly publish the combination Elymus nakaii because the place of valid publication of the basionym was not cited (Saint Louis Code, Art. 33.3). Instead, Roegneria nakaii was cited from Kitagawa (J. Jap. Bot. 17: 236. 1941), where the name was not validly published because no Latin description was provided (Art. 36.1).
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
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Culms erect, slightly decumbent at base, ca. 100 cm tall, ± puberulent at nodes. Leaf sheath glabrous, or retrorsely pubescent proximally; leaf blade flat, 11–20 × 0.4–0.7 cm, thin, abaxial surface glabrous, adaxial surface pilose. Spike erect, 10–13 cm. Spikelets 1 per node, ± secund, dense, with ca. 5 florets. Glumes lanceolate, proximal one 9–10 mm including point, distal one 9.5–11.5 mm including point, (3–)5(–7)-veined, scabrous along veins, margin glabrous, apex acuminate. Lemma hirsutulous near base and margin and along veins, otherwise glabrous; first lemma ca. 10 mm; awn reflexed, 18–22 mm. Palea subequaling lemma, rigidly ciliate along keels, between keels glabrous proximally and puberulent distally, apex emarginate, truncate, or subrounded. Fl. and fr. Jul–Aug. 2n = 28*.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat & Distribution
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Meadows, mountain slopes. Hebei, Jilin, Nei Mongol, Ningxia [N Korea].
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Synonym
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Basionym: Roegneria nakaii Kitagawa, Rep. Inst. Sci. Res. Manchoukuo 5(5): 151. 1941.
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