Agrostis

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Vigosa-Mercado J, Delgado-Salinas A, Alvarado Cárdenas L, Eguiarte L (2023) Revision of the genus Agrostis (Poaceae, Pooideae, Poeae) in Megamexico. PhytoKeys 230 : 157–256, doi. Versioned wiki page: 2023-08-11, version 197535, https://species-id.net/w/index.php?title=Agrostis&oldid=197535 , contributors (alphabetical order): Pensoft Publishers.

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BibTeX:

@article{Vigosa-Mercado2023PhytoKeys230,
author = {Vigosa-Mercado, J. Luis AND Delgado-Salinas, Alfonso AND Alvarado Cárdenas, Leonardo O. AND Eguiarte, Luis E.},
journal = {PhytoKeys},
publisher = {Pensoft Publishers},
title = {Revision of the genus Agrostis (Poaceae, Pooideae, Poeae) in Megamexico},
year = {2023},
volume = {230},
issue = {},
pages = {157--256},
doi = {10.3897/phytokeys.230.105878},
url = {https://phytokeys.pensoft.net/articles.php?id=105878},
note = {Versioned wiki page: 2023-08-11, version 197535, https://species-id.net/w/index.php?title=Agrostis&oldid=197535 , contributors (alphabetical order): Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - Revision of the genus Agrostis (Poaceae, Pooideae, Poeae) in Megamexico
A1 - Vigosa-Mercado J
A1 - Delgado-Salinas A
A1 - Alvarado Cárdenas L
A1 - Eguiarte L
Y1 - 2023
JF - PhytoKeys
JA -
VL - 230
IS -
UR - http://dx.doi.org/10.3897/phytokeys.230.105878
SP - 157
EP - 256
PB - Pensoft Publishers
M1 - Versioned wiki page: 2023-08-11, version 197535, https://species-id.net/w/index.php?title=Agrostis&oldid=197535 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/phytokeys.230.105878

Wikipedia/ Citizendium:

<ref name="Vigosa-Mercado2023PhytoKeys230">{{Citation
| author = Vigosa-Mercado J, Delgado-Salinas A, Alvarado Cárdenas L, Eguiarte L
| title = Revision of the genus Agrostis (Poaceae, Pooideae, Poeae) in Megamexico
| journal = PhytoKeys
| year = 2023
| volume = 230
| issue =
| pages = 157--256
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/phytokeys.230.105878
| url = https://phytokeys.pensoft.net/articles.php?id=105878
| pmc =
| accessdate = 2024-12-13

}} Versioned wiki page: 2023-08-11, version 197535, https://species-id.net/w/index.php?title=Agrostis&oldid=197535 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Poales
Familia: Poaceae

Name

Agrostis L., Sp. Pl. 1: 61. 1753, nom. et typ. cons. – Wikispecies link – Pensoft Profile

  • [[ = Vilfa | = Vilfa ]] Adans., Fam. Pl. 2: 495. 1763. Type: Agrostis. stolonifera L. (lectotype designated by Hitchcock (1920[1]: 127)).
  • [[ = Trichodium | = Trichodium ]] Michx., Fl. Bor.-Amer. 1: 41. 1803. Type: T. laxiflorum Michx. (lectotype designated by Hitchcock (1920[1]: 127)).
  • [[ = Agraulus | = Agraulus ]] P. Beauv., Ess. Agrostogr. 5, t. 4. 1812. Type: Agrostis canina L. (lectotype designated by Hitchcock (1920[1]: 127)).
  • [[ = Decandolia | = Decandolia ]] Bastard, Essai Fl. Maine et Loire 15, 28. 1809, nom. illeg. superfl. Type: Agrostis stolonifera L. (lectotype designated by Hitchcock (1937[2]: 515)).
  • [[ = Notonema | = Notonema ]] Raf., Bull. Bot. (Geneva) 1: 220. 1830. Type: Agrostis arachnoides Elliott (=A. elliotiana Schult.).
  • [[ = Bromidium | = Bromidium ]] Nees & Meyen, Nov. Actorum Acad. Caes. Leop.-Carol. Nat. Cur. 19, suppl. 1: 154. 1843. Type: Agrostis hygrometrica Nees (lectotype designted by Rúgolo 1982[3]: 196)).
  • [[ = Anomalotis | = Anomalotis ]] Steud., Syn. Pl. Glumac. 1: 198. 1854. Type: A. quinqueseta Steud.
  • [[ = Didymochaeta | = Didymochaeta ]] Steud., Syn. Pl. Glumac. 1: 185. 1854. Type: D. chilensis Steud. (lectotype designated by Clayton and Renvoize (1986[4]: 134)).
  • [[ = Chaetopogon | = Chaetopogon ]] Janch., Eur. Gatt. Farn. Bl.-Pfl. (ed. 2) 33. 1913. Type: not designated.
  • [[ = Neoschischkinia | = Neoschischkinia ]] Tzvelev, Bot. Zhurn. (Moscow & Leningrad) 53: 309. 1968. Type: Trichodium elegans Thore.
  • [[ = Linkagrostis | = Linkagrostis ]] Romero Garcia & C. Morales, Candollea 42(1): 383. 1987. Type: Agrostis juressi Link.*

Type

Agrostis canina L. (lectotype designated by Widén (1971[5]: 13), see also Philipson (1937)[6], Jarvis (1992)[7] and commentary below) .

Description

Plants herbaceous, annuals or perennials, up to 1.2 m, caespitose, rhizomatous or stoloniferous, sometimes developing pseudoestolons. Tillers extravaginal and/or intravaginal. Culms decumbent to erect, usually slender, unbranched, internodes hollow. Leaves basal or cauline; sheaths open; auricles absent; ligules membranous, entire to lacerate, usually scabridulous dorsally; blades filiform to linear, flat, conduplicate, convolute, or involute. Synflorescence a panicle, usually terminal, contracted to open; branches usually in whorls. Spikelets up to 4.5 mm long, 1-flowered, pedicellate, laterally compressed; rachilla not prolonged beyond the base of the floret; disarticulation above the glumes; glumes as long as the spikelet, equal to unequal, keeled, membranous, usually 1-nerved, rarely awned; floret bisexual, shorter than the glumes, usually 1/3–3/4 the length of the glumes, rarely longer; callus rounded, glabrous to pubescent; lemmas rounded dorsally, apices entire, erose or toothed, membranous, (3)5-nerved, veins inconspicuous or prominent, unawned or awned dorsally, awn straight to geniculate; paleas often absent or diminute, sometimes well-developed and reaching (1/5–)1/3–3/4 of the lemma length; lodicules 2; anthers (1)3; ovary glabrous, styles 2, free to the base. Fruit a caryopsis; endosperm liquid, soft or solid. x= 7.

Commentaries

The name Agrostis was first described in the work of Linnaeus, Genera Plantarum (Linnaeus 1737[8]: 19), with a Latin diagnosis. According to the International Code of Nomenclature for Algae, Fungi and Plants (Art. 13.1) (Turland et al. 2018[9]), the beginning of effective publication dates for generic names is 1st May 1753, with the publication of Species Plantarum (Linnaeus 1753[10]). In this latter work, Linnaeus described 12 names, classified in two groups: 1) Aristatae (A. spica-venti L., A. miliacea L., A. arundinacea L., A. rubra L., A. canina L., A. paradoxa L.); and 2) Muticae (A. stolonifera L., A. capillaris L., A. alba L., A. minima L., A. virginica L., A. indica L.). No type species was designated by Linnaeus.
Hitchcock (1905)[11] designated A. alba as the type, but the original material of this name is a Poa L. species (Widén, 1971), and the adoption of this name as lectotype would result in Agrostis becoming a synonym of Poa (McNeill et al. 1987[12]). Years later, Hitchcock (1920)[1], proposed A. stolonifera as lectotype, but this name conflicts with the original description of the genus, since it mentions that the lemmas are awned (Linnaeus 1737[8]), and the original description of A. stolonifera mentions that the lemmas are unawned (Linnaeus 1753[10]).
Philipson (1937)[6] was the first to propose as lectotype the name A. canina. Widén (1971)[5] agreed with that choice, and formally designated this name, since it is the one that keeps better the usage of the generic name. Jarvis (1992)[7] proposed the conservation of the name Agrostis, with a conserved type.
The species of this genus are often confused with other genera found in the study zone, with one-flowered spikelets, such as Lachnagrostis Trin., Muhlenbergia Scherb., Podagrostis (Griseb.) Scribn. & Merr., Polypogon Desf., Sporobolus R. Br., and some species of Peyritschia E. Fourn., but it is distinguished from them by the following combination of characters: spikelets disarticulating above the glumes, florets shorter than the glumes, usually 1/3–3/4 the length of the glumes, rarely longer, lemmas with usually five veins, dorsal awns often present, palea often reduced or absent (sometimes reaching up to 3/4 of the lemma length), and rachilla not prolonged. See the work of Sylvester et al. (2020b)[13] for a key to differentiate Agrostis from morphologically similar genera.

Taxon Treatment

  • Vigosa-Mercado, J; Delgado-Salinas, A; Alvarado Cárdenas, L; Eguiarte, L; 2023: Revision of the genus Agrostis (Poaceae, Pooideae, Poeae) in Megamexico PhytoKeys, 230: 157-256. doi


Other References

  1. ↑ 1.0 1.1 1.2 1.3 Hitchcock A (1920) The genera of grasses of the United States, with special reference to the economic species.Bulletin of the United States Department of Agriculture772: 1–307. https://doi.org/10.5962/bhl.title.64674
  2. ↑ Hitchcock A (1937) Agrostis. In: Britton N (Ed.) North American Flora (Vol.17(7)). New York Botanical Garden, New York, 515–534.
  3. ↑ Rúgolo Z (1982) Revalidación del género Bromidium Nees et Meyen emend. Pilger (Gramineae).Darwiniana24: 187–216. https://www.jstor.org/stable/23216517
  4. ↑ Clayton W, Renvoize S (1986) Genera graminum. Grasses of the world. Her Majesty’s Stationery Office, London, 1–389.
  5. ↑ 5.0 5.1 Widén K (1971) The genus Agrostis L. in eastern Fennoscandia. Taxonomy and distribution.Flora Fennica5: 1–209. http://hdl.handle.net/10138/36219
  6. ↑ 6.0 6.1 Philipson W (1937) A revision of the British species of the genus Agrostis Linn. Journal of the Linnean Society.Botany51: 73–15. https://doi.org/10.1111/j.1095-8339.1937.tb01905.x
  7. ↑ 7.0 7.1 Jarvis C (1992) Seventy-two proposals for the conservation of types of selected Linnaean generic names, the report of subcommittee 3C on the lectotypification of Linnaean generic names.Taxon41(3): 552–583. https://doi.org/10.2307/1222833
  8. ↑ 8.0 8.1 Linnaeus C (1737) Genera Plantarum. Conradum Wishoff, Leiden, 1–384. https://doi.org/10.5962/bhl.title.70902
  9. ↑ Turland N, Wiersema J, Barrie F, Greuter W, Hawksworth D, Herendeen P, Knapp S, Kusber W, Li D, Marhold K, May TW JMcNeill J, Monro A, Prado J, Price M, Smith G (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress, Shenzhen, China, July 2017. Regnum Vegetabile (Vol. 159) Koeltz Botanical Books, Glashütten, 1–254. https://doi.org/10.12705/Code.2018
  10. ↑ 10.0 10.1 Linnaeus C (1753) Species Plantarum. Impensis Laurentii Salvii, Stockholm, 1–560. https://doi.org/10.5962/bhl.title.669
  11. ↑ Hitchcock A (1905) North American species of Agrostis. United States Department of Agriculture Bureau of Plant Industry Bulletin 68: 1–68.
  12. ↑ McNeill J, Odell E, Consaul L, Katz D (1987) American code and later lectotypifications of Linnaean generic names dating from 1753: A case study of discrepancies.Taxon36(2): 350–401. https://doi.org/10.2307/1221430
  13. ↑ Sylvester S, Peterson P, Romaschenko K, Bravo-Pedraza W, Cuta-Alarcon L, Soreng R (2020b) New combinations and updated descriptions in Podagrostis (Agrostidinae, Poaceae) from the Neotropics and Mexico.PhytoKeys148: 21–50. https://doi.org/10.3897/phytokeys.148.50042
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