Saxifragaceae


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Saxifragaceae

[‚sak·sə·frə′gās·ē‚ē]
(botany)
A family of dicotyledonous plants in the order Rosales which are scarcely or not at all succulent and have two to five carpels usually more or less united, and leaves not modified into pitchers.

Saxifragaceae

 

a family of dicotyledonous plants. They are herbs, generally with simple leaves, usually exstipulate. The flowers are solitary or, more often, in clusters; they are regular or, less frequently, irregular. The flowers are almost always bisexual. There are usually five sepals, five to ten petals (sometimes they are absent), and five to ten stamens (rarely three). The ovary is superior, half-inferior, or inferior; the fruit is a capsule. There are approximately 35 genera (600 species), growing primarily in the cold and temperate belts of the northern hemisphere, often in the mountains. In the USSR there are five genera (more than 100 species). Formerly, plants of the families Hy-drangeaceae and Grossulariaceae, as well as some other groups of plants, were included in the family Saxifragaceae. They are now generally considered to be separate families. The tannin-containing plants of the genus Bergenia have commercial value. Species of the genera Astilbe, Saxífraga, Chrysosplenium, Hendiera, and Rodgersia are used as ornamentals.

REFERENCES

Flora SSSR, vol. 9. Moscow-Leningrad, 1939.
Takhtadzhian, A. L. Sistema ifilogeniia tsvetkovykh rastenii. Moscow-Leningrad, 1966.
References in periodicals archive ?
laticuspis share the following characteristics with the Grossulariaceae and Saxifragaceae families: small size; fleshy tissues that cover the seed coat as an aril or sarcotesta of gelatinous pulp; albuminous nature with a small or tiny embryo; and endosperm containing oily food reserves (Corner, 1976).
Phylogenetic relationships among members of Saxifragaceae sensu lato based on rbcL sequence data.
Of the extant taxa most closely related to Itea, Saxifragaceae tend to have tricolpate or tricolporoidate pollen; Pterostemon has tricolporate pollen; and Ribes species generally have polyporate pollen, often with elongate to irregularly-shaped ectoapertural regions (e.
The genus Greya (Prodoxidae) is the sister taxon to the yucca moth clade and includes 15-16 species that have radiated onto plants in the Saxifragaceae and Umbelliferae (Thompson 1987, Davis et al.
Saxifragaceae, Asteraceae), or pentamerous flowers with a trimerous gynoecium (e.
Callitrichaceae, Grossulariaceae, Lentibulariaceae, Piperaceae, Saxifragaceae con una especie cada una.
These metabolites appear mainly in Bruniaceae, Hamamelidaceae, Saxifragaceae, Fagaceae, Myricaceae, Betulaceae and Juglandaceae.
In both hemispheres, there were representatives of a pan-tropical Arcto-Tertiary flora in which many families were abundant, such as the Lauraceae (Laurus, Persea, Machilus, Cinnamomum); Anacardiaceae (Rhus, Pistacia); Theaceae (Camellia); Moraceae (Celtis, Morus, Brousonnetia); Hamamelidaceae (Hamamelis, Liquidambar); Aquifoliaceae (Ilex); Ericaceae (Arbutus, Gaulteria); Fagaceae (Castanea, Fagus, Nothofagus, Castanopsis, Lithocarpus, Quercus); Fabaceae (Albizia, Acacia, Robinia, Cercis); and Saxifragaceae (Ribes, Hydrangea).
Family Study sites Control sites Percentage (M) (N) (M/N) Caryophyllaceae 8 9 89% Poaceae 11 13 85% Saxifragaceae 7 9 78% Juncaceae 4 7 57% Cyperaceae 8 18 44%
Pollination-by-deceit mechanisms have been recorded, since the 19th century, in some species within the families, Araceae, Aristolochiaceae, Begoniaceae, Saxifragaceae etc.
Regions Pennel Bergenia crassifolia Saxifragaceae Eurasia (L.