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Seashore Bentgrass

Agrostis pallens Trin.

Comprehensive Description

provided by North American Flora
Agrostis pallens Trin. Mem. Acad. St.-Petersb. VI. 6 2 : 328
1841.
Agrostis exarata var. littoralis Vasey, Bull. Torrey Club 13: 54. 1886. (Type from Oregon, Howell
64.) Agrostis densiflora var. littoralis Vasey, Contr. U. S. Nat. Herb. 3: 72. 1892. (Based on A. exarata
var. littoralis Vasey.)
Perennial, with creeping rhizomes; culms erect, glabrous, rather stout, 2-4-noded, 20-40 cm. tall; sheaths glabrous or nearly so; ligule rather firm, 2-3 mm. long; blades flat or somewhat involute, 1-4 mm. wide; panicle contracted, almost spikelike, usually pale, 5-10 cm. long; glumes acuminate, scabrous on the keel, 2.5-3 mm. long; lemma a little shorter than the glumes, awnless; palea wanting.
Type locality: North America.
Distribution: Sand dunes along the coast, Washington to central California.
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bibliographic citation
Albert Spear Hitchcock. 1937. (POALES); POACEAE (pars). North American flora. vol 17(7). New York Botanical Garden, New York, NY
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North American Flora

Comprehensive Description

provided by North American Flora
Agrostis diegoensis Vasey, Bull. Torrey Club 13: 55. 1886
Agrostis foliosa Vasey, Bull. Torrey Club 13: 55. 1886. (Type from Oregon.) Not A. foliosa
R.& S. 1817. Agrostis diegoensis var. foliosa Vasey, Contr. U. S. Nat. Herb. 3: 74. 1892. (Based on .4. foliosa
Vasey.) Agrostis canina var. stolonifera Vasey, Contr. U. S. Nat. Herb. 3: 75. 1892. (Type from Oregon.)
Not A. canina var. stolonifera Blytt, 1847. Agrostis pallens foliosa Hitchc. Bull. U. S. Dep. Agr. PI. Ind. 68: 34. 1905. (Based on A. foliosa
Vasey.) Perennial, with creeping rhizomes; culms erect, often decumbent at base, glabrous, severalnoded, 50-120 cm. tall; sheaths glabrous or usually more or less scabrous; ligule thin, dentate or lacerate, 2-5 mm. long; blades flat, lax or sometimes rather stiffly appressed, scabrous, narrow or as much as 6 mm. wide, the lower often pale or brownish; panicle narrow, open, green or tawny, rarely purplish, 10-15 cm. long, the branches ascending, rather stiff, some of them naked below; glumes scabrous on the keel, about 3 mm. long; lemma a little shorter than the glumes, narrow, awnless or with a short straight awn, the callus glabrous or nearly so; palea wanting.
Type locality: San Diego, California.
Distribution: Meadows and open woods at low and medium altitudes. Montana and British Columbia to southern California and Nevada.
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bibliographic citation
Albert Spear Hitchcock. 1937. (POALES); POACEAE (pars). North American flora. vol 17(7). New York Botanical Garden, New York, NY
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Comprehensive Description

provided by North American Flora
Agrostis lepida Hitchc. in Jepson, Fl. Calif. 1: 121. 1912
Perennial, with numerous short rhizomes; culms tufted, slender, erect, glabrous, 1or 2-
noded near base, 30-40 cm. tall; sheaths glabrous, the lower becoming fibrous; ligule as much as
4 mm. long; leaves mostly basal, the blades slender, firm, erect, flat or folded, slightly scabrous,
5-15 cm. long, 1 mm. wide or less, the upper blade below the middle of the culm, 3 cm. long or
less; panicle purple, open, 10-15 cm. long, the axis glabrous below, the branches verticillate,
becoming divaricately spreading, glabrous, naked below, the lowermost 2-5 cm. long; glumes
glabrous or nearly so, acute, 3 mm. long; lemma 2 mm. long, awnless; palea very minute or
wanting.
Type locality: Siberian Pass, Sequoia National Park, California {Hitchcock 3455). Distribution: Meadows and open woods, southern Sierras.
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bibliographic citation
Albert Spear Hitchcock. 1937. (POALES); POACEAE (pars). North American flora. vol 17(7). New York Botanical Garden, New York, NY
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Physical Description

provided by USDA PLANTS text
Perennials, Terrestrial, not aquatic, Rhizomes present, Rhizome elongate, creeping, stems distant, 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 very narrow or filiform, less than 2 mm wide, Leaf blades 2-10 mm wide, Leaf blade margins f olded, involute, or conduplicate, Leaf blades mostly glabrous, Ligule present, Ligule an unfringed eciliate membrane, Ligule a fringed, ciliate, or lobed membrane, Inflorescence terminal, 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 branches more than 10 to numerous, Lower panicle branches whorled, 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 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 margins thin, lying flat, Lemma straight, Callus or base of lemma evidently hairy, Callus hairs shorter than lemma, Palea shorter than lemma, 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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USDA NRCS NPDC
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USDA PLANTS text

Agrostis pallens

provided by wikipedia EN

Agrostis pallens is a species of grass known by the common name seashore bentgrass.[2]

Distribution

It is native to western North America from British Columbia to Montana to California, where it grows in many types of habitat, typically open meadows, woodlands, subalpine areas, and other dry habitats.[3] The diploid number of the grass is either 42 or 56.

Description

Agrostis pallens is a perennial bunchgrass growing 10–70 cm (3.9–27.6 in) tall. It is occasionally rhizomatous.[4] The ligule is 1.5–3 mm (0.059–0.118 in) long. The leaf blades are flat or inrolled, and 1.5–5 cm (0.59–1.97 in) long and 1–6 mm (0.039–0.236 in) wide. The lanceolate to somewhat ovate inflorescence is 5–20 cm (2.0–7.9 in) long. The glumes are 2–3 mm (0.079–0.118 in) long. The lemma is 1.5–2.5 mm (0.059–0.098 in) long, occasionally with a straight awn measuring between 0.5–2.5 cm (0.20–0.98 in). The palea is either absent or vestigial. The anthers are 0.7–1.8 mm (0.028–0.071 in) long.[5]

The grass blooms from April into May.[6]

The grass grows from 200–3,500 m (660–11,480 ft) of elevation.[5]

References

  1. ^ "NatureServe Explorer - Agrostis pallens". NatureServe Explorer Agrostis pallens. NatureServe. 2022-05-30. Retrieved 30 May 2022.
  2. ^ a b "Plants Profile for Agrostis pallens". PLANTS Database. United States Department of Agriculture. Retrieved 12 September 2018.
  3. ^ Umberto Quattrocchi (2006). CRC World Dictionary of Grasses: Common Names, Scientific Names, Eponyms, Synonyms, and Etymology. CRC Press. p. 61. ISBN 9781420003222.
  4. ^ Stevie Daniels, Brooklyn Botanic Garden (1999). Stevie Daniels (ed.). Easy Lawns: Low Maintenance Native Grasses for Gardeners Everywhere (illustrated ed.). Brooklyn Botanic Garden. p. 96. ISBN 9781889538129.
  5. ^ a b "Jepson Manual - AGROSTIS pallens". Jepson Flora Project. University of California. 1993. Retrieved 12 September 2018.
  6. ^ "Agrostis pallens". Calflora. 2018. Retrieved 12 September 2018.

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wikipedia EN

Agrostis pallens: Brief Summary

provided by wikipedia EN

Agrostis pallens is a species of grass known by the common name seashore bentgrass.

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