马格草Roegneria glaucifolia Keng
马格草Roegneria glaucifolia Keng
53.马格草（禾本科图说）图版22：1-4
Roegneria glaucifolia Keng,耿以礼及陈守良, 南京大学学报 (生物系) 1: 57. 1963; 禾本科图说384.图313. 1959. nom. nud.
植株具根头，秆丛生，坚硬，直立，高30-60厘米，具2-3节，节处无毛。叶鞘无毛或基部者具柔毛；叶片质硬，内卷，灰绿色，长6-12厘米，宽3-5毫米，上面及边缘粗糙，下面较平滑，蘖生叶长2-16厘米，宽1-3毫米。穗状花序直立，长6-15厘米；小穗含3-5小花，长13-15毫米（芒除外）；颖长圆状披针形，先端急尖或渐尖，边缘干膜质，具明显而粗糙的3脉或第二颖具5脉，第一颖长4-7毫米，第二颖长6-8毫米；外稃长圆状披针形，背部微糙涩，上部显著具5脉，脉上粗糙或具微小硬毛，芒粗糙，长15-30毫米，第一外稃长9-11毫米；内稃与外稃等长或稍短，先端截平，背部1/2以上部分被毛，脊上具短纤毛。
产西藏。生于山坡。模式标本采自西藏马格。
《Flora of China》 Vol. 22 (2006)
Elymus caesifolius á. L?ve ex S. L. Chen
马格草 ma ge cao
Replaced synonym: Roegneria glaucifolia Keng, Acta Univ. Nankin. Sci. Nat. 1963(1):57. 1963, not Elymus glauci-folius Willdenow, Enum. Pl. 131. 1809.
Culms tufted, erect, 30–60 cm tall, 2- or 3-noded, glabrous. Leaf sheath glabrous or pilose at base; leaf blade glaucous, involute, (2–)6–16 × (0.1–)0.3–0.5 cm, stiff, abaxial surface smooth, glabrous, adaxial surface and margin scabrous. Spike erect, 6–15 cm. Spikelets 1 per node, 13–15 mm excluding awns, with 3–5 florets. Glumes oblong-lanceolate, proximal one 4–7 mm, distal one 6–8 mm, both 3-veined or distal one 5-veined, margin scarious, apex acute or acuminate. Lemma oblong-lanceolate, scabrous abaxially, scabrous or hirsutulous along veins; first lemma 9–11 mm; awn reflexed, 15–30 mm, scabrous. Palea slightly shorter than or subequaling lemma, abaxially hirsutulous in distal half, ciliolate along keels, apex truncate. Fl. and fr. late summer. 2n = 42*.
* Mountain slopes. Xizang.
L?ve (Feddes Repert. 95: 448. 1984) did not previously validly publish the name Elymus caesifolius; see the note following the genus description above.
科名：禾本科 Gramineae
属名：鹅观草属 Roegneria
53.马格草（禾本科图说）图版22：1-4
Roegneria glaucifolia Keng,耿以礼及陈守良, 南京大学学报 (生物系) 1: 57. 1963; 禾本科图说384.图313. 1959. nom. nud.
植株具根头，秆丛生，坚硬，直立，高30-60厘米，具2-3节，节处无毛。叶鞘无毛或基部者具柔毛；叶片质硬，内卷，灰绿色，长6-12厘米，宽3-5毫米，上面及边缘粗糙，下面较平滑，蘖生叶长2-16厘米，宽1-3毫米。穗状花序直立，长6-15厘米；小穗含3-5小花，长13-15毫米（芒除外）；颖长圆状披针形，先端急尖或渐尖，边缘干膜质，具明显而粗糙的3脉或第二颖具5脉，第一颖长4-7毫米，第二颖长6-8毫米；外稃长圆状披针形，背部微糙涩，上部显著具5脉，脉上粗糙或具微小硬毛，芒粗糙，长15-30毫米，第一外稃长9-11毫米；内稃与外稃等长或稍短，先端截平，背部1/2以上部分被毛，脊上具短纤毛。
产西藏。生于山坡。模式标本采自西藏马格。
《Flora of China》 Vol. 22 (2006)
Elymus caesifolius á. L?ve ex S. L. Chen
马格草 ma ge cao
Replaced synonym: Roegneria glaucifolia Keng, Acta Univ. Nankin. Sci. Nat. 1963(1):57. 1963, not Elymus glauci-folius Willdenow, Enum. Pl. 131. 1809.
Culms tufted, erect, 30–60 cm tall, 2- or 3-noded, glabrous. Leaf sheath glabrous or pilose at base; leaf blade glaucous, involute, (2–)6–16 × (0.1–)0.3–0.5 cm, stiff, abaxial surface smooth, glabrous, adaxial surface and margin scabrous. Spike erect, 6–15 cm. Spikelets 1 per node, 13–15 mm excluding awns, with 3–5 florets. Glumes oblong-lanceolate, proximal one 4–7 mm, distal one 6–8 mm, both 3-veined or distal one 5-veined, margin scarious, apex acute or acuminate. Lemma oblong-lanceolate, scabrous abaxially, scabrous or hirsutulous along veins; first lemma 9–11 mm; awn reflexed, 15–30 mm, scabrous. Palea slightly shorter than or subequaling lemma, abaxially hirsutulous in distal half, ciliolate along keels, apex truncate. Fl. and fr. late summer. 2n = 42*.
* Mountain slopes. Xizang.
L?ve (Feddes Repert. 95: 448. 1984) did not previously validly publish the name Elymus caesifolius; see the note following the genus description above.
