species information (Systematics, BiolFlor-Names, Status) |
BiolFlor-Name |
family |
german name(s) |
Briza media L. |
Poaceae » |
Mittleres Zittergras
|
reference |
Kühn, I., Klotz, S. 2002: Systematik, Taxonomie und Nomenklatur. In: Klotz, S., Kühn, I., Durka, W. (Hrsg.): BIOLFLOR - Eine Datenbank mit biologisch-ökologischen Merkmalen zur Flora von Deutschland. Schriftenreihe für Vegetationskunde. Bonn »
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|
Synonymy (taxonomy after Wisskirchen & Haeupler, 1998) |
Briza media L. |
accepted |
Briza tremula Lam. |
Synonym |
Briza pilosa Schur |
Synonym |
Briza media var. major Peterm. |
Synonym |
|
Chromosome number » |
Basic chromosome number |
7 |
Chromosome number 2n |
14 |
Chromosome number (Germany) |
True |
Most common chromosome race |
False |
Ploidy level |
2 (diploid) |
Ploidy type |
D (diploid with haploid basic number) |
Reference |
Oberdorfer, E. 1983: Pflanzensoziologische Exkursionsflora. Ulmer, Stuttgart |
|
DNA content » |
DNA content (pg/2C) |
15.1 |
Chromosome number |
28 |
Quality |
chromosome number known and occurring in Germany [b] |
Authorised in BENNET & LEITCH 2001 |
False |
Reference |
Bennett, M.D., Smith, J.S. 1991: Nuclear DNA amounts in angiosperms. Philosophical Transactions of the Royal Society London B 334:309-345 |
DNA content (pg/2C) |
16.9 |
Chromosome number |
14 |
Quality |
chromosome number known and occurring in Germany [b] |
Authorised in BENNET & LEITCH 2001 |
False |
Reference |
Grime, J.P., Shacklock, J.M.L., Band, S.R. 1985: Nuclear DNA contents, shoot phenology and species co-existence in a limestone grassland community. New Phytologist 100:435-445 |
DNA content (pg/2C) |
32.0 |
Chromosome number |
28 |
Quality |
chromosome number known and occurring in Germany [b] |
Authorised in BENNET & LEITCH 2001 |
False |
Reference |
Bennett, M.D., Smith, J.S. 1976: Nuclear DNA amounts in angiosperms. Philosophical Transactions of the Royal Society London B 274:227-274 |
DNA content (pg/2C) |
10.4 |
Chromosome number |
14 |
Quality |
chromosome number known and occurring in Germany [b] |
Authorised in BENNET & LEITCH 2001 |
True |
Reference |
Bennett, M.D., Smith, J.S. 1991: Nuclear DNA amounts in angiosperms. Philosophical Transactions of the Royal Society London B 334:309-345 |
|
Life form » |
Life form |
H (Hemicryptophyte) |
Qualifier |
always [1] |
Life span » |
Life span |
p (pluriennial-pollakanthic) |
Qualifier |
always [1] |
Vegetative propagation » |
Vegetative propagation |
a (Runner) |
Qualifier |
always [1] |
Storage organs » |
Storage organs |
a (Runner) |
Qualifier |
always [1] |
Shoot metamorphoses » |
Shoot metamorphoses |
a (Runner) |
Qualifier |
always [1] |
Rosettes » |
Rosettes |
h (Hemirosette plant) |
Qualifier |
always [1] |
special references:
|
Hensen, I. 1997: Life strategies of xerothermic grasslands - mechanisms of reproduction and colonization within Stipetum capillatae s.l. and Adonido-Brachypodietum pinnati. Feddes Repertorium 108:425-452
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Golubev, V.N. 1957: Materialy k ekologo-morfologiceskoj i geneticeskoj charakteristikje zhizjennych form travjanistych rastenij. Botaniceskij Zhurnal 42:1055-1072
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Ebel, F., Mühlberg, H. 1987: Vergleichend-ökomorphologische Untersuchungen an Pflanzen-Taxa eines Trocken- und Feuchtbiotops. Hercynia N. F. 24:408-424
|
Briemle, G., Schreiber, K.F. 1994: Zur Frage der Beeinflussung pflanzlicher Lebens- und Wuchsformen durch unterschiedliche Landschaftspflegemaßnahmen. Tuexenia 14:229-244
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Mühlberg, H. 1967: Die Wuchstypen mitteleuropäischer Poaceen. Hercynia N. F. 4:11-50
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Salisbury, E. 1952: Downs and dunes. Their plant life and its environment. Bells & Sons, London
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|
Flowering phenology » |
Begin of flowering (months) |
5 |
End of flowering (months) |
6 |
Duration of flowering (months) |
2 |
Number of flowering phases |
0 |
Symphenological Groups » |
Phenological group |
7 (Ligustrum-Stachys sylvatica-Phase) Phenological season: end of early summer |
Reference |
Dierschke, H 1995: Phänologische und symphänologische Artengruppen von Blütenpflanzen in Mitteleuropa. Tuexenia 15: 523-560 |
|
Type of reproduction » |
Type of reproduction |
sv (by seed and vegetatively) |
Reference |
Dixon, J.M. 2002: Biological Flora of the British Isles: Briza media L.. Journal of Ecology 90:737-752 |
Type of seed production » |
Type of seed production |
s (amphimictic, sexual) |
Reference |
Dixon, J.M. 2002: Biological Flora of the British Isles: Briza media L.. Journal of Ecology 90:737-752 |
Dicliny » |
Dicliny |
so (hermaphroditic) |
Abundance |
always [1] |
Reference |
Connor, H.E. 1979: Breeding system in the grasses: a survey. New Zealand Journal of Botany 17:547-574 |
Dichogamy » |
Dichogamy |
h (homogamous) |
Reference |
Knuth, P. 1898: Handbuch der Blütenbiologie. Leipzig |
Self-sterility and self-incompatibility » |
Self-sterility and self-incompatibility |
I+ (± self-incompatibel) |
Reference |
Murray, B.G. 1974: Breeding systems and floral biology in the genus Briza. Heredity 33:285-292 |
Systematic reference |
species [S] |
SI mechanism » |
SI mechanism |
GSI (gametophytic self-incompatibility) |
Reference |
de Nettancourt, D. 1977: Incompatibility in angiosperms. Springer, Berlin |
Pollen vector » |
Pollen vector |
wi (wind) Pollen vector group: ab (abiotische Bestäubung) |
Abundance |
always [1] |
Reference |
Dixon, J.M. 2002: Biological Flora of the British Isles: Briza media L.. Journal of Ecology 90:737-752 |
Systematic reference |
species [S] |
Breeding system » |
Breeding system |
X (allogamous) |
Reference |
Anmerkung 2002: xenogam, da SI |
Flower class after MUELLER » |
Flower class after MUELLER |
W (wind flowers) Typical pollinators: - |
Flower type after KUGLER » |
Flower type after KUGLER |
0 (not applicable) |
|
Fruit type » |
Fruit type |
Nu (nut) |
Diaspore type » |
Diaspore type |
FZb (fruit with appendage) |
Germinule type » |
Heteromorphic type |
n (not heteromorphic) |
Germinule type |
F (fruit) |
Information available |
True |
Development of nutritious appendages |
|
Development of flat appendages |
|
Development of elongated appendages |
|
Development of additional appendages |
|
Heteromorphic type |
n (not heteromorphic) |
Germinule type |
FZb (fruit with appendage) |
Information available |
True |
Development of nutritious appendages |
|
Development of flat appendages |
always [1] |
Development of elongated appendages |
sometimes [2] |
Development of additional appendages |
always [1] |
Weights » |
Measured object |
Germinule |
Type of germinule or diaspore |
F (fruit) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Weight (minimum) [mg] |
0.2 |
Weight (mean) [mg] |
0.3 |
Weight (maximum) [mg] |
0.3 |
Measured object |
Germinule |
Type of germinule or diaspore |
FZb (fruit with appendage) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Weight (minimum) [mg] |
0.5 |
Weight (mean) [mg] |
0.6 |
Weight (maximum) [mg] |
0.7 |
Measured object |
Diaspore |
Type of germinule or diaspore |
FZb (fruit with appendage) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Weight (minimum) [mg] |
0.5 |
Weight (mean) [mg] |
0.6 |
Weight (maximum) [mg] |
0.7 |
Sizes » |
Measured object |
Germinule |
Type of germinule or diaspore |
F (fruit) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Length (minimum) [mm] |
1.2 |
Length (mean) [mm] |
1.7 |
Length (maximum) [mm] |
2.0 |
Width (minimum) [mm] |
0.5 |
Width (mean) [mm] |
0.9 |
Width (maximum) [mm] |
1.0 |
Height (minimum) [mm] |
0.4 |
Height (mean) [mm] |
0.5 |
Height (maximum) [mm] |
0.5 |
Measured object |
Germinule |
Type of germinule or diaspore |
FZb (fruit with appendage) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Length (minimum) [mm] |
2.2 |
Length (mean) [mm] |
3.1 |
Length (maximum) [mm] |
4.2 |
Width (minimum) [mm] |
1.5 |
Width (mean) [mm] |
1.7 |
Width (maximum) [mm] |
1.8 |
Height (minimum) [mm] |
1.2 |
Height (mean) [mm] |
1.4 |
Height (maximum) [mm] |
1.5 |
Measured object |
Diaspore |
Type of germinule or diaspore |
FZb (fruit with appendage) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Length (minimum) [mm] |
2.2 |
Length (mean) [mm] |
3.1 |
Length (maximum) [mm] |
4.2 |
Width (minimum) [mm] |
1.5 |
Width (mean) [mm] |
1.7 |
Width (maximum) [mm] |
1.8 |
Height (minimum) [mm] |
1.2 |
Height (mean) [mm] |
1.4 |
Height (maximum) [mm] |
1.5 |
special references:
|
Grime, J.P., Mason, G., Curtis, A.V., Rodman, J., Band, S.R., Mowforth, M.A., Neal, A.M., Shaw, S. 1981: A comparative study of germination characteristics in a local flora. Journal of Ecology 69:1017-1069 (Gattung)
|
Grime, J.P., Hodgson, J.G., Hunt, R. 1988: Comparative Plant Ecology. Unwin Hyman, London (Gattung)
|
Hensen, I., Müller, C. 1997: Experimental and structural investigations of anemochorous dispersal. Plant Ecology 133:169-180 (Gattung)
|
Böttner, I., Frey, W., Hensen, I. 1997: Carex humilis-Gesellschaft im unteren Unstruttal (mitteldeutsches Trockengebiet) - Lebensstrategien einer xerothermen Vegetationseinheit. Feddes Repertorium 108:7; 583-8; 602 (Gattung)
|
Brouwer, W., Stählin, A. 1955: Handbuch der Samenkunde. DLG-Verlag, Frankfurt/Main (Gattung)
|
Häfliger, T.J., Scholz, H. 1981: Grass weeds. Documenta CIBA-GEIGY Ltd., Basel (Gattung)
|
Luftensteiner, H.W. 1982: Untersuchungen zur Verbreitungssbiologie von Pflanzengemeinschaften an vier Standorten in Niederösterreich. Bibliotheca Botanica 135:1-68 (Gattung)
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|
Grassland utilization indicator values » |
Occurrence |
GE (little used grasslands) |
Guild |
G (grass) |
Mowing tolerance |
4 (between 3 and 5 (sensitive to moderately tolerant to mowing)) |
Grazing tolerance |
4 (between 3 and 5 (sensitive to moderately tolerant to grazing)) |
Trampling tolerance |
4 (between 3 and 5 (sensitive to moderately tolerant to trampling)) |
Foraging value |
6 (between 6 and 8 (intermediate to high forage value)) |
Foraging value for deer |
|
|
Habitat » |
Habitat |
T6.2.1.5 (null) Alliance: Nardetalia strictae
|
Occurrence questionable |
False |
Occurence restricted |
False |
Annotation |
|
Habitat |
T6.2.2.2.3 (null) Alliance: Bromion erecti
|
Occurrence questionable |
False |
Occurence restricted |
False |
Annotation |
|
Habitat |
T7.1.2 (null) Alliance: Arrhenatherion
|
Occurrence questionable |
False |
Occurence restricted |
False |
Annotation |
mager |
|
Class » |
English circumscription |
05.3 (Fescue-brome communities of dry and semi-dry grasslands) Class: Festuco-Brometea
|
English circumscription |
05.4 (Commercially used grasslands) Class: Molinio-Arrhenatheretea
|
English circumscription |
05.6 (Acidic mat-grass communities) Class: Nardetea strictae
|
English circumscription |
07.1 (Thermophilous and mesophilous forest grassland ecotones) Class: Trifolio-Geranietea sanguinei
|
English circumscription |
08.4 (Heather and gorse heathlands) Class: Calluno-Ulicetea
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