Comments
(
الإنجليزية
)
المقدمة من eFloras
Agrostis clavata is distinguished by the combination of scabrid leaves and panicle branches, small, pale green spikelets, acuminate glumes, an awnless lemma, and very small palea and anthers.
Agrostis clavata subsp. matsumurae (A. clavata var. nukabo) is often recognized, mainly on the basis of a dense, narrow panicle bearing spikelets from the base of the primary branches. In contrast, subsp. clavata has panicle branches divergent at flowering and bare in the lower 1/3–1/2. However, short, densely spiculate branches are often present at the panicle nodes among the longer, bare-based branches in subsp. clavata, contributing to a denser panicle appearance when frequent. All the panicle branches become erect in the fruiting stage, further blurring the boundary with subsp. matsumurae. It has not been possible to distinguish two subspecies satisfactorily in herbarium material.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
(
الإنجليزية
)
المقدمة من eFloras
Annual or short-lived perennial, loosely tufted. Culms erect or geniculate at base, slender, 30–70 cm tall, 2–4-noded. Leaf sheaths smooth; leaf blades linear, flat, thin, 6–15 cm × 1–5 mm, both surfaces scabrid; ligule 1.5–3 mm, back scabrid, apex obtuse or lacerate. Panicle lax, lanceolate to narrowly oblong in outline, 8–25 cm; branches 2–7 at each node, ascending, capillary, 8–15 cm, scabrid, bare in lower 1/3–1/2 or sometimes with spikelets from base. Spikelets 1.5–2.5 mm, yellowish green; glumes lanceolate, subequal, lower slightly longer, keeled, keels aculeate-scabrid, apex acuminate; callus glabrous or nearly so; lemma 2/3–3/4 spikelet length, awnless, apex obtuse; palea to 0.25 mm. Anthers 0.3–0.5 mm. Fl. and fr. summer and autumn.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
(
الإنجليزية
)
المقدمة من eFloras
Tufted annual or perennial, then with a few cataphylls at base, without rhiaome or stolons, branchiing at base, glabrous. Culms up to 60 cm long. Sheaths smooth; uppermost ligules quadrangular, 0.75-2 mm long, apex rounded, reose; bldes erect, flat, up to 18 cm long, 3.5 mm wide, smooth to scaberulous. Panicle contracted, somewhat lobed and rather densely spikeld, 8.5-19 cm long, 1-3 cm wide, branches usually scaberulous, lowermost 2-8 together, longest 4.6-7.5 cm long, the shorter often spikeled nearly to base. Spikelets 1.6-2.25 mm long. Glumes unequal, the lower longest, ovate-lanceolate. Rachilla process absent. Lemma 1.25-1.6(-1.7) mm long, 0.6-0.82 times as long as as the lower glume; acutish, 5-nerved, Trichodium-net well-developed; callus oblique, glabrous or with an occasional up to 0.1 mm long hair; awn absent. Palea 0.2-0.5 mm long, 0.13-0.36 times as long as the lema. Anthers 0.2-0.5(-0.55) mm long, 0.15 times as long as the lemma.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
(
الإنجليزية
)
المقدمة من eFloras
Distributed in N. Europe to Sachalin, Japan, Taiwan.
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Distribution
(
الإنجليزية
)
المقدمة من eFloras
Anhui, Fujian, Gansu, Guangdong, Guizhou, Hebei, Henan, Heilongjiang, Jilin, Nei Mongol, Shaanxi, Shandong, Sichuan, Taiwan, Xizang, Yunnan [Japan, Korea, Mongolia, Russia; SW Asia (Caucasus), N Europe, North America (Alaska)].
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
(
الإنجليزية
)
المقدمة من eFloras
Roadsides, riversides, forest margins, disturbed grassy places, often in moist situations; below 4000 m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
(
الإنجليزية
)
المقدمة من eFloras
Agrostis matsumurae Hack. ex [Matsjmura, Bot. Mag. Tokyo 11: 445. 1897, nomen] Honda, J. Sc. Imp. Univ. Tokyo 3, 3(1): 191. 1930.
Agrostis clavata Trin. subsp. matsumurae Tateoka, Bull. Nat. Sc. Mus. Tokyo 11: 161. 1968; Hsu, Fl. Taiwan 5: 398. 1978.
Agrostis formosana Ohwi, Bot. Mag. Tokyo 55: 354. 1941.
Agrostis clavata Trin. var. nukabo Ohwi, Bot. Mag. Tokyo 55: 356. 1941.
Agrostis exarata Trin. subsp. clavata (Trin.) Koyama, Grass. Jap. Neighb. Reg. 196. 1987.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
(
الإنجليزية
)
المقدمة من eFloras
Agrostis clavata subsp. matsumurae (Hackel ex Honda) Tateoka; A. clavata var. nukabo Ohwi; A. formosana Ohwi; A. matsumurae Hackel ex Honda.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Physical Description
(
الإنجليزية
)
المقدمة من USDA PLANTS text
Annuals, Terrestrial, not aquatic, Stems nodes swollen or brittle, Stems erect or ascending, Stems geniculate, decumbent, or lax, sometimes rooting at nodes, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly basal, below middle of stem, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades 2-10 mm wide, Leaf blades mostly flat, Leaf blade margins folded, involute, or conduplicate, Leaf blades mostly glabrous, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, Inflorescence an open panicle, openly paniculate, branches spreading, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence branches more than 10 to numerous, Lower panicle branches whorled, Flowers bisexual, Spikelets laterally compressed, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating above the glumes, glumes persistent, Spikelets disarticulating beneath or between the florets, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal or subequal, Glumes equal to or longer than adjacent lemma, Glume equal to or longer than spikelet, Glumes 1 nerved, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma 5-7 nerved, Lemma glabrous, Lemma apex truncate, rounded, or obtuse, Lemma awnless, Lemma mucronate, very shortly beaked or awned, less than 1-2 mm, Lemma margins thin, lying flat, Lemma straight, Palea 2 nerved or 2 keeled, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear.
Hoikkarölli: Brief Summary
(
الفنلندية
)
المقدمة من wikipedia FI
Hoikkarölli (Agrostis clavata) pääasiassa taigametsissä kasvava röllien sukuun kuuluva heinäkasvi. Suomessa laji on uhanalainen.
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Agrostis abakanensis: Brief Summary
(
البرتغالية
)
المقدمة من wikipedia PT
Agrostis abakanensis é uma espécie de gramínea do gênero Agrostis, pertencente à família Poaceae.
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- Autores e editores de Wikipedia
겨이삭
(
الكورية
)
المقدمة من wikipedia 한국어 위키백과
겨이삭은 벼과 겨이삭속의 두해살이풀로 학명은 Agrostis clavata이다.
분포
한국의 각처 저지대 길가에서 자란다.
특징
줄기높이 40cm, 나비 0.2-0.5cm. 줄기는 가늘고 곧게 서며 녹색으로서 거칠거칠하다. 밑의 잎은 모여나고 줄기잎은 어긋나며 좁은 줄모양으로 끝이 점점 뾰족하고 줄기보다 짧다. 뿌리는 수염뿌리로 뭉쳐난다. 꽃은 원추꽃차례이고 꽃대 끝에 나며 5-6월에 핀다. 꽃줄기는 곧게 올라가고 길이 10-15cm이며 중간의 각 마디에서 2-3개의 가는 꽃자루가 바퀴살처럼 돋아난다. 거기에 엷은 보라색 혹은 녹색의 아주 작은 꽃떨기가 어긋난 꽃차례로 많이 핀다. 열매는 이삭열매로 아주 작다.
아종
-
Agrostis clavata subsp. matsumurae (Hack.) Tateoka ex Honda
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