species information (Systematics, BiolFlor-Names, Status) |
BiolFlor-Name |
family |
german name(s) |
Sempervivum arachnoideum L. |
Crassulaceae » |
Spinnweben-Hauswurz
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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) |
Sempervivum arachnoideum L. |
accepted |
Sempervivum arachnoideum var. glabrescens Willk. |
Synonym |
>Sempervivum arachnoideum subsp. arachnoideum |
accepted |
>Sempervivum arachnoideum subsp. doellianum (C. B. Lehm.) Schinz & R. Keller |
Synonym |
>Sempervivum doellianum C. B. Lehm. |
Synonym |
>Sempervivum arachnoideum subsp. tomentosum (C. B. Lehm. & Schnittsp.) Schinz |
accepted |
>Sempervivum arachnoideum var. tomentosum (Schnittsp. & Leh.) Wohlf. |
Synonym |
>Sempervivum tomentosum Lehm. & Schnittsp. |
Basionym |
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Flowering phenology » |
Begin of flowering (months) |
7 |
End of flowering (months) |
9 |
Duration of flowering (months) |
3 |
Number of flowering phases |
0 |
Symphenological Groups » |
Phenological group |
0 (not available) Phenological season: not available |
Reference |
Dierschke, H 1995: Phänologische und symphänologische Artengruppen von Blütenpflanzen in Mitteleuropa. Tuexenia 15: 523-560 |
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Type of reproduction » |
Type of reproduction |
vvs (mostly vegetatively, rarely by seed) |
Reference |
Lippert, W. 1995: Crassulaceae. In: Hegi, G.B. (Hrsg.) Illustrierte Flora von Mitteleuropa, 4 (2a), S. 69-129, Blackwell, Berlin |
Type of seed production » |
Type of seed production |
s (amphimictic, sexual) |
Reference |
Knuth, P. 1898: Handbuch der Blütenbiologie. Leipzig |
Dicliny » |
Dicliny |
so (hermaphroditic) |
Abundance |
always [1] |
Reference |
Knuth, P. 1898: Handbuch der Blütenbiologie. Leipzig |
Dichogamy » |
Dichogamy |
a2 (protandrous) |
Reference |
Knuth, P. 1898: Handbuch der Blütenbiologie. Leipzig |
Self-sterility and self-incompatibility » |
Self-sterility and self-incompatibility |
SC (self-compatibel) |
Reference |
East, E.M. 1940: The distribution of self-sterility in the flowering plants. Proceedings of the American Philosophical Society 82:449-518 |
Systematic reference |
genus [G] |
Pollen vector » |
Pollen vector |
se (selfing) Pollen vector group: se (Selbstbestäubung) |
Abundance |
rare [4] |
Reference |
Knuth, P. 1898: Handbuch der Blütenbiologie. Leipzig |
Systematic reference |
species [S] |
Pollen vector |
in (insects) Pollen vector group: zo (Tierbestäubung) |
Abundance |
the rule [2] |
Reference |
Knuth, P. 1898: Handbuch der Blütenbiologie. Leipzig |
Systematic reference |
species [S] |
Breeding system » |
Breeding system |
XF (facultative allogamous) |
Reference |
Lippert, W. 1995: Crassulaceae. In: Hegi, G.B. (Hrsg.) Illustrierte Flora von Mitteleuropa, 4 (2a), S. 69-129, Blackwell, Berlin |
Floral rewards » |
Floral rewards |
1 (nectar) |
Reference |
Lippert, W. 1995: Crassulaceae. In: Hegi, G.B. (Hrsg.) Illustrierte Flora von Mitteleuropa, 4 (2a), S. 69-129, Blackwell, Berlin |
Amount of floral reward |
3 (present) |
Floral rewards |
1 (nectar) |
Reference |
Knuth, P. 1898: Handbuch der Blütenbiologie. Leipzig |
Amount of floral reward |
3 (present) |
Flower color » |
Flower colour |
red |
Basic flower colour |
r (red) |
Reference |
Schubert, R., Jäger, E.J., Werner, K. (Hrsg.) 1987: Exkursionsflora Band 3. Atlas der Gefäßpflanzen. 6. Aufl., Volk und Wissen, Berlin |
Flower class after MUELLER » |
Flower class after MUELLER |
B (flowers with totally hidden nectar) Typical pollinators: bees, bumblebees, wasps, bombylides, syrphids |
Flower type after KUGLER » |
Flower type after KUGLER |
1.2bd (disk flowers with nectar ± hidden nectaries at or in ovary) |
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Fruit type » |
Fruit type |
SaBa (aggregate follicles) |
Diaspore type » |
Diaspore type |
S (seed) |
Germinule type » |
Heteromorphic type |
n (not heteromorphic) |
Germinule type |
S (seed) |
Information available |
True |
Development of nutritious appendages |
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Development of flat appendages |
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Development of elongated appendages |
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Development of additional appendages |
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Weights » |
Measured object |
Germinule |
Type of germinule or diaspore |
S (seed) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Weight (minimum) [mg] |
0.0 |
Weight (mean) [mg] |
0.0 |
Weight (maximum) [mg] |
0.0 |
Measured object |
Diaspore |
Type of germinule or diaspore |
S (seed) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Weight (minimum) [mg] |
0.0 |
Weight (mean) [mg] |
0.0 |
Weight (maximum) [mg] |
0.0 |
Sizes » |
Measured object |
Germinule |
Type of germinule or diaspore |
S (seed) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Length (minimum) [mm] |
0.5 |
Length (mean) [mm] |
0.5 |
Length (maximum) [mm] |
0.6 |
Width (minimum) [mm] |
|
Width (mean) [mm] |
0.2 |
Width (maximum) [mm] |
|
Height (minimum) [mm] |
|
Height (mean) [mm] |
0.2 |
Height (maximum) [mm] |
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Measured object |
Diaspore |
Type of germinule or diaspore |
S (seed) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Length (minimum) [mm] |
0.5 |
Length (mean) [mm] |
0.5 |
Length (maximum) [mm] |
0.6 |
Width (minimum) [mm] |
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Width (mean) [mm] |
0.2 |
Width (maximum) [mm] |
|
Height (minimum) [mm] |
|
Height (mean) [mm] |
0.2 |
Height (maximum) [mm] |
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special references:
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Anderberg, A.L. 1994: Atlas of seeds and small fruits of Northwest-European plant species with morphological descriptions. - Part 4 (Resedaceae - Umbelliferae). Swedish Museum of Natural History, Stockholm (Gattung)
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Beijerink, W. 1947: Zadenatlas der Nederlandsche Flora. Biol. Stat. Wijster, Wageningen (Gattung)
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Knapp, U. 1994: Skulptur der Samenschale und Gliederung der Crassulaceae. Botanische Jahrbücher für Systematik 116:157-187 (Gattung)
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Habitat » |
Habitat |
T10.2.2 (null) Alliance: ???
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Occurrence questionable |
False |
Occurence restricted |
False |
Annotation |
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Habitat |
T5.1.1.4 (null) Alliance: Sedo-Scleranthion
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Occurrence questionable |
False |
Occurence restricted |
False |
Annotation |
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Habitat |
T5.2.3 (null) Alliance: Asplenietea trichomanis
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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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