| species information (Systematics, BiolFlor-Names, Status) |
| BiolFlor-Name |
family |
german name(s) |
| Danthonia decumbens (L.) DC. |
Poaceae » |
Dreizahn
|
| 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 »
|
|
| Synonymy (taxonomy after Wisskirchen & Haeupler, 1998) |
| Danthonia decumbens (L.) DC. |
accepted |
| Poa decumbens (L.) Scop. |
Synonym |
| Melica rigida Wibel |
Synonym |
| Melica decumbens (L.) Weber |
Synonym |
| Bromus decumbens (L.) Koeler |
Synonym |
| Festuca decumbens L. |
Basionym |
| Sieglingia decumbens (L.) Bernh. |
Synonym |
| Triodia decumbens (L.) P. Beauv. |
Synonym |
| >Danthonia decumbens subsp. decipiens O. Schwarz & Bässler ex Bässler |
accepted |
| >Danthonia decumbens subsp. decipiens O. Schwarz & Bässler, nom. inval. |
Synonym |
| >Danthonia decipiens (O. Schwarz & Bässler ex Bässler) Å. Löve & D. Löve |
Synonym |
| >Sieglingia decumbens subsp. decipiens (O. Schwarz & Bässler ex Bässler) Senghas & Seybold, nom. inval. (sine basion.) |
Synonym |
| >Danthonia decumbens subsp. decumbens |
accepted |
| >Sieglingia decumbens subsp. decumbens |
Synonym |
|
| Chromosome number » |
| Basic chromosome number |
6 |
| Chromosome number 2n |
24 |
| Chromosome number (Germany) |
True |
| Most common chromosome race |
False |
| Ploidy level |
|
| Ploidy type |
|
| Reference |
Oberdorfer, E. 1983: Pflanzensoziologische Exkursionsflora. Ulmer, Stuttgart |
| Basic chromosome number |
6 |
| Chromosome number 2n |
18 |
| Chromosome number (Germany) |
False |
| Most common chromosome race |
False |
| Ploidy level |
|
| Ploidy type |
|
| Reference |
Oberdorfer, E. 1983: Pflanzensoziologische Exkursionsflora. Ulmer, Stuttgart |
|
| DNA content » |
| DNA content (pg/2C) |
5.9 |
| Chromosome number |
36 |
| Quality |
chromosome number known and occurring in Germany [b] |
| Authorised in BENNET & LEITCH 2001 |
True |
| 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 |
|
| Flowering phenology » |
| Begin of flowering (months) |
6 |
| End of flowering (months) |
7 |
| Duration of flowering (months) |
2 |
| Number of flowering phases |
0 |
| Symphenological Groups » |
| Phenological group |
8 (Clematis vitalba-Galium sylvaticum-Phase)
Phenological season: midsummer |
| 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 |
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 |
Conert, H.J. 1979: Poaceae. In: Hegi, G.B. (Hrsg.) Illustrierte Flora von Mitteleuropa, 1(3), S. 1-843, Parey, Berlin |
| 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 |
| Self-sterility and self-incompatibility » |
| Self-sterility and self-incompatibility |
SC (self-compatibel) |
| Reference |
Conert, H.J. 1979: Poaceae. In: Hegi, G.B. (Hrsg.) Illustrierte Flora von Mitteleuropa, 1(3), S. 1-843, Parey, Berlin |
| Systematic reference |
species [S] |
| Pollen vector » |
| Pollen vector |
wi (wind)
Pollen vector group: ab (abiotische Bestäubung) |
| Abundance |
the rule [2] |
| Reference |
Conert, H.J. 1979: Poaceae. In: Hegi, G.B. (Hrsg.) Illustrierte Flora von Mitteleuropa, 1(3), S. 1-843, Parey, Berlin |
| Systematic reference |
species [S] |
| Pollen vector |
kl (cleistogamy)
Pollen vector group: se (Selbstbestäubung) |
| Abundance |
the rule [2] |
| Reference |
Grime, J.P., Hodgson, J.G., Hunt, R. 1988: Comparative Plant Ecology. Unwin Hyman, London |
| Systematic reference |
species [S] |
| Breeding system » |
| Breeding system |
AF (facultative autogamous) |
| Reference |
Anmerkung 2002: vgl. Klassifizierungsschema Abb. |
| 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) |
| Diaspore type |
TFSt (part of infructescence) |
| 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 |
sometimes [2] |
| Development of additional appendages |
always [1] |
| Heteromorphic type |
n (not heteromorphic) |
| Germinule type |
TFSt (part of infructescence) |
| Information available |
False |
| Development of nutritious appendages |
|
| Development of flat appendages |
|
| Development of elongated appendages |
|
| Development of additional appendages |
|
| Weights » |
| Measured object |
Germinule |
| Type of germinule or diaspore |
F (fruit) |
| Constraint |
False |
| Heteromorphic type |
n (not heteromorphic) |
| Weight (minimum) [mg] |
0.8 |
| Weight (mean) [mg] |
0.8 |
| Weight (maximum) [mg] |
0.9 |
| Sizes » |
| Measured object |
Germinule |
| Type of germinule or diaspore |
F (fruit) |
| Constraint |
False |
| Heteromorphic type |
n (not heteromorphic) |
| Length (minimum) [mm] |
2.0 |
| Length (mean) [mm] |
2.4 |
| Length (maximum) [mm] |
2.5 |
| Width (minimum) [mm] |
|
| Width (mean) [mm] |
1.4 |
| 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 |
False |
| Heteromorphic type |
n (not heteromorphic) |
| Length (minimum) [mm] |
4.0 |
| Length (mean) [mm] |
4.6 |
| Length (maximum) [mm] |
6.0 |
| Width (minimum) [mm] |
1.5 |
| Width (mean) [mm] |
1.8 |
| Width (maximum) [mm] |
2.1 |
| Height (minimum) [mm] |
0.8 |
| Height (mean) [mm] |
1.0 |
| Height (maximum) [mm] |
1.2 |
| Measured object |
Diaspore |
| Type of germinule or diaspore |
FZb (fruit with appendage) |
| Constraint |
False |
| Heteromorphic type |
n (not heteromorphic) |
| Length (minimum) [mm] |
4.0 |
| Length (mean) [mm] |
4.6 |
| Length (maximum) [mm] |
6.0 |
| Width (minimum) [mm] |
1.5 |
| Width (mean) [mm] |
1.8 |
| Width (maximum) [mm] |
2.1 |
| Height (minimum) [mm] |
0.8 |
| Height (mean) [mm] |
1.0 |
| Height (maximum) [mm] |
1.2 |
| 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)
|
| Bakker, J.P., Bakker, E.S., Rosén, E., Verweij, G.L. 1997: The soil seed bank of undisturbed and disturbed dry limestone grassland on Öland (Sweden). Z. Ökologie Nat. sch. 6:9-18 (Gattung)
|
| Bresinsky, A. 1963: Bau, Entwicklungsgeschichte und Inhaltsstoffe der Elaiosomen. Studien zur myrmekochoren Verbreitung von Samen und Früchten. Bibliotheca Botanica Vol. 126. (Gattung)
|
| Brouwer, W., Stählin, A. 1955: Handbuch der Samenkunde. DLG-Verlag, Frankfurt/Main (Gattung)
|
| Strykstra, R.J. 1997: Seed dispersal in a Dutch grassland reserve. . Univesity of Ulster, Coleraine. (Gattung)
|
|
| 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 |
3 (little forage value) |
| Foraging value for deer |
|
|
| Habitat » |
| Habitat |
T10.3.3.1 (null)
Alliance: ???
|
| Occurrence questionable |
False |
| Occurence restricted |
False |
| Annotation |
|
| Habitat |
T4 (Dwarf scrub communities below alpine areas)
Alliance: (Calluno-)Ulicetalia
|
| Occurrence questionable |
False |
| Occurence restricted |
False |
| Annotation |
|
| Habitat |
T6.2.2.2.3 (null)
Alliance: Bromion erecti
|
| Occurrence questionable |
False |
| Occurence restricted |
False |
| Annotation |
wechselfeucht oder sauer |
| Habitat |
T7.3.2 (null)
Alliance: Molinion coeruleae p.p.
|
| Occurrence questionable |
False |
| Occurence restricted |
False |
| Annotation |
|
|
| 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 |
08.4 (Heather and gorse heathlands)
Class: Calluno-Ulicetea
|
|
|
|
Display of complete information for the selected species. Only traits available for the selected species are displayed.
|
