Asclepiadaceae


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Related to Asclepiadaceae: Asclepias curassavica

Asclepiadaceae

[ə‚sklēp·ē·ə′dās·ē‚ē]
(botany)
A family of tropical and subtropical flowering plants in the order Gentianales characterized by a well-developed latex system; milkweed (Asclepias) is a well-known member.

Asclepiadaceae

 

(milkweed), a family of dicotyledonous plants. They are creeping, climbing, or erect shrubs or subshrubs and herbs; these plants are rarely trees. The leaves are generally opposite, entire, and exstipulate. The flowers are bisexual, usually regular, and five-petaled. The corolla is sympetalous and often has a crown. The stamens and the gynoecium form a gynostegium. The pollen grains are in pollinia; more rarely they are in tetrads. The distinctive structure of the flower is adapted to cross-pollination by insects. The fruit has two follicles, which are somewhat fork-shaped and resemble a swallow’s tail. The seeds usually have a pappus of silky fibers. Plants of the family Asclepiadaceae are characterized by the presence of a milky juice (often poisonous) and intraxylary phloem (bast).

There are approximately 290 genera (2,000 species), distributed primarily in tropical regions; some species are also encountered in subtropical and temperate regions. Eight or nine genera, comprising approximately 40 species, are found in the USSR. The most important genera include Asclepias (milkweed), Vinatoxicum, and Periploca. There are many poisonous, medicinal, and ornamental plants in this family (condurango, wax plant, and stapelia); some species yield dye substances and fiber (species of Marsdenia and Calotropis).

References in periodicals archive ?
Therefore, testing of the previously isolated pregnane glycosides from other plant species of the family Asclepiadaceae is required with significance focus on pregnane aglycones which will be a subject of our further study.
155 [micro]M Voacangine Apocynaceae Minimum concentration of 25 [micro]M to produce detectable spot in TLC Voacangine Apocynaceae Minimum concentration of hydroxyindolenine 25 [micro]M to produce detectable spot in TLC Glycosides Name of glycoside Plant family Activity Cynatroside A Asclepiadaceae 50% inhibition at 6.
braziliensis Asclepiadaceae Gongronema latifolia Benth Nigeria LF L.
Poaceae Clark Makino Floyd Asclepias viridis Walter (SE) Asclepiadaceae Clark Azolla caroliniana Willd.
Evolutionary innovation and diversification in the flowers of Asclepiadaceae.
The Asclepiadaceae, as traditionally defined, have repeatedly been shown to be an apomorphic derivative of the Apocynaceae.
Es wurde wiederholt festgestellt, dass die Asclepiadaceae in der traditionellen Umgrenzung ein apomorphes Derivat der Apocynaceae sind.
They are clearly more similar to each other than to the rest of the Gentianales, and in a number of characters there is a gradation from the Apocynaceac to the Asclepiadaceae.
Here we again assess the relationship between the Apocynaceae and the Asclepiadaceae, and we present our arguments for the recognition of a single family.
The other families would remain within the order with the following consensus figures (consensus figures from the nine chosen classifications are given in parentheses for comparison): Gentianaceae, 100% (100%); Loganiaceae, 58% (100%); Apocynaceae, 92% (100%); Asclepiadaceae, 77% (78%); Rubiaceae, 54% (56%); and Saccifoliaceae, 75% (75%).
In the Lignosae could be found the Rubiales (consisting of the Dialypetalanthaceae and Rubiaceae), the Apocynales (consisting of the Apocynaceae, Asclepiadaceae, Periplocaceae, and Plocospermataceae), and the Loganiales (consisting of the Antoniaceae, Buddlejaceae, Loganiaceae, Oleaceae, Potaliaceae, Spigeliaceae, and Strychnaceae).
Here the Gentianales is composed of the Loganiaceae, Buddlejaceae, Rubiaceae (including Theligonaceae), Apocynaceae, Asclepiadaceae, Gentianaceae, and Menyanthaceae.