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Pullup Muhly

Muhlenbergia filiformis (Thurb.) Rydb.

Comprehensive Description

provided by North American Flora
Muhlenbergia filiformis (Thurb.) Rydb. Bull. Torrey Club 32: 600. 1905.
Vilfa depauperala var. filiformis Thurb. ; S. Wats. Bot. King's Expl. 376. 1871
F8;/a«reci7/»Ma Thurb. in S.Wats. Bot. Calif. 2: 268. 1880. (Type from CaHfornia.) tiot Muhlenbergia gracillima Torr. 1856.
Sporobolus gracillimus Vasey, Cat. Grasses U. S. 44. 1885. (Based on Vilfa gracillima Thurb.)
Sporobolus filiformis Rydb. Contr. U. S. Nat. Herb. 3: 189. 1895. (Based on Vilfa depauperata var. filiformis Thurb.)
Sporobolus depaupcratus var. filiformis Beal, Grasses N. Am. 2: 296. 1896. (Tvpc from Montana.)
Sporobolus simplex Scribn. Bull. U. S. Dep. Agr. Agrost. 11: 48. 1898. (Type from Georgetown, Colorado, Rydberg 2411.)
Sporobolus aristatus Rydb. Bull. Torrey Chib 28: 266. 1901. (Type from Big Horn Mountains, Wyoming, Tweedy 2196.)
Sporobolus simplex var. thermale Merr. Rhodora 4: 48. 1902. (Type from Lolo Hot Springs, Montana, Griffiths 302a.)
Muhlenbergia simplex Rydb. Bull. Torrey Club 32: 600. 1905. (Based on Sporobolus simplex Scribn.) Not M. simplex Kunth. 1829.
Muhlenbergia aristulata Rydb. Bull. Torrev Club 32: 600. 1905. (Based on Sporobolus aristatus Rydb.) Annual; culms cespitose, rather soft and lax, erect or somewhat spreading, glabrous, filiform, usually 5-15 cm. tall, sometimes as much as 30 cm.; ligule thin, 1-2 mm. long; blades flat, glabrous beneath, scabrous-pubescent on the upper surface, usually less than 3 cm. long and 1 mm. wide; panicles numerous, narrow, interrupted, few-flowered, usually less than 5 cm. long; glumes ovate, about equal, obtuse or acutish, awnless, 1 mm. long; lemma lanceolate, acute, mucronate, minutely pubescent, scaberulous at tip, 1 mm. long, the callus glabrous.
Type LOCALiri': Yosemite Valley. California (Bolander 6001).
Distribution: Open woods and mountain meadows. South Dakota and Kansas to British Columbia, and southward to New Mexico and California. A somewhat stouter form with thicker panicles has been called M. simplex Rydb.
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bibliographic citation
Albert Spear Hitchcock. 1935. (POALES); POACEAE (pars). North American flora. vol 17(6). New York Botanical Garden, New York, NY
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Physical Description

provided by USDA PLANTS text
Annuals, Terrestrial, not aquatic, Stems trailing, spreading or prostrate, 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 cauline, 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 subulate, needle-like, tip pungent, Leaf blades very narrow or filiform, less than 2 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 a contracted panicle, narrowly paniculate, branches appressed or ascending, Inflorescence a dense slender spike-like panicle or raceme, branches contracted, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence spike linear or cylindric, several times longer than wide, Inflorescence single raceme, fascicle or spike, Inflorescence branches more than 10 to numerous, Flowers bisexual, Spikelets pedicellate, 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 shorter than adjacent lemma, Glumes 1 nerved, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma similar in texture to glumes, Lemma 3 nerved, Lemma glabrous, Lemma apex dentate, 2-fid, Lemma awnless, Lemma mucronate, very shortly beaked or awned, less than 1-2 mm, Lemma margins thin, lying flat, Lemma straight, Callus or base of lemma evidently hairy, Callus hairs shorter than lemma, Palea present, well developed, Palea membranous, hyaline, Palea about equal to lemma, 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.
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Dr. David Bogler
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Missouri Botanical Garden
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Muhlenbergia filiformis

provided by wikipedia EN

Muhlenbergia filiformis, known by the common name Pullup muhly, is a species of grass. It is native to western North America from western Canada to northern Mexico.

Pullup muhly grows in many types of moist to wet habitats.

Description

Muhlenbergia filiformis is an annual herb producing clumps of decumbent stems up to 30 centimeters long which root where their nodes touch the substrate. The inflorescence is a narrow, cylindrical array of appressed branches bearing many spikelets each about a millimeter long.

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Muhlenbergia filiformis: Brief Summary

provided by wikipedia EN

Muhlenbergia filiformis, known by the common name Pullup muhly, is a species of grass. It is native to western North America from western Canada to northern Mexico.

Pullup muhly grows in many types of moist to wet habitats.

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