species information (Systematics, BiolFlor-Names, Status) |
BiolFlor-Name |
family |
german name(s) |
Aira praecox L. |
Poaceae » |
Frühe Haferschmiele
|
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) |
Aira praecox L. |
accepted |
Avena pusilla Weber |
Synonym |
Avena praecox (L.) P. Beauv. |
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) |
5.9 |
Chromosome number |
14 |
Quality |
chromosome number known and occurring in Germany [b] |
Authorised in BENNET & LEITCH 2001 |
True |
Reference |
Bennett, M.D., Smith, J.P., Heslop-Harrison, J.S. 1982: Nuclear DNA amounts in angiosperms. Proceedings of the Royal Society London. Series B 216:179-199 |
|
Life form » |
Life form |
H (Hemicryptophyte) |
Qualifier |
always [1] |
Life form |
T (Therophyte) |
Qualifier |
always [1] |
Life span » |
Life span |
a (annual) |
Qualifier |
always [1] |
Rosettes » |
Rosettes |
h (Hemirosette plant) |
Qualifier |
always [1] |
special references:
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Pemadasa, M.A., Lovell, P.H. 1975: Factors controlling germination of some dune annuals. Journal of Ecology 63:41-59
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Mühlberg, H. 1967: Die Wuchstypen mitteleuropäischer Poaceen. Hercynia N. F. 4:11-50
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Kästner, A., Karrer, G. 1995: Übersicht der Wuchsformentypen als Grundlage für deren Erfassung in der "Flora von Österreich". Florae Austriacae Novit. 3:1-51
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Watkinson, A.R., Huiskes, A.H.L., Noble, J.C. 1979: The demography of sand dune species with contrasting life cycles. In: Jeffries, R.L., Davy, A.J. (Hrsg.) Ecological processes in coastal environments, S. 95-112, Blackwell. Sci. Publ., Oxford
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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 |
4 (Fagus-Lamiastrum-Phase) Phenological season: start of mid spring |
Reference |
Dierschke, H 1995: Phänologische und symphänologische Artengruppen von Blütenpflanzen in Mitteleuropa. Tuexenia 15: 523-560 |
|
Type of reproduction » |
Type of reproduction |
s (by seed/by spore) |
Reference |
Krumbiegel, A. 2002: Morphologie der vegetativen Organe (außer Blätter). In: Klotz, S., Kühn, I., Durka, W. (Hrsg.) BiolFlor - Biologisch-ökologische Daten zur Flora Deutschlands, S. 1-2, Bonn |
Type of seed production » |
Type of seed production |
s (amphimictic, sexual) |
Reference |
Anmerkung 2002: Sexuelle Samenproduktion, da keine Apomikten in Gattung bekannt |
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 |
Pollen vector » |
Pollen vector |
wi (wind) Pollen vector group: ab (abiotische Bestäubung) |
Abundance |
the rule [2] |
Reference |
Frank, D., Klotz, S. 1990: Biologisch-ökologische Daten zur Flora der DDR. Wissenschaftliche Beiträge Martin-Luther Univ. Halle-Wittenberg Vol. 32 (P41) |
Systematic reference |
family [F] |
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 |
|
Development of elongated appendages |
always [1] |
Development of additional appendages |
always [1] |
Weights » |
Measured object |
Germinule |
Type of germinule or diaspore |
FZb (fruit with appendage) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Weight (minimum) [mg] |
0.2 |
Weight (mean) [mg] |
0.2 |
Weight (maximum) [mg] |
0.2 |
Measured object |
Diaspore |
Type of germinule or diaspore |
FZb (fruit with appendage) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Weight (minimum) [mg] |
0.2 |
Weight (mean) [mg] |
0.2 |
Weight (maximum) [mg] |
0.2 |
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] |
1.4 |
Length (maximum) [mm] |
1.6 |
Width (minimum) [mm] |
|
Width (mean) [mm] |
|
Width (maximum) [mm] |
|
Height (minimum) [mm] |
|
Height (mean) [mm] |
|
Height (maximum) [mm] |
|
Measured object |
Germinule |
Type of germinule or diaspore |
FZb (fruit with appendage) |
Constraint |
True |
Heteromorphic type |
n (not heteromorphic) |
Length (minimum) [mm] |
2.0 |
Length (mean) [mm] |
2.5 |
Length (maximum) [mm] |
3.2 |
Width (minimum) [mm] |
0.3 |
Width (mean) [mm] |
0.5 |
Width (maximum) [mm] |
0.6 |
Height (minimum) [mm] |
0.2 |
Height (mean) [mm] |
0.3 |
Height (maximum) [mm] |
0.3 |
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)
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Grime, J.P., Hodgson, J.G., Hunt, R. 1988: Comparative Plant Ecology. Unwin Hyman, London (Gattung)
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Brouwer, W., Stählin, A. 1955: Handbuch der Samenkunde. DLG-Verlag, Frankfurt/Main (Gattung)
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Habitat » |
Habitat |
T10.3.3.1.1 (null) Alliance: ???
|
Occurrence questionable |
False |
Occurence restricted |
False |
Annotation |
|
Habitat |
T6.2.1.4.5 (null) Alliance: Thero-Airion
|
Occurrence questionable |
False |
Occurence restricted |
False |
Annotation |
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Class » |
English circumscription |
05.2 (Pioneer communities of hair-grasses) Class: Koelerio-Corynephoretea
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