Rhinanthus


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Rhinanthus

 

(rattle), a genus of hemiparasitic plants of the family Scrophulariaceae. The plants are annual herbs with green, opposite, and usually serrate leaves. The flowers are mostly yellow and in spicate racemes; the corolla is two-lipped. The fruit, a laterally compressed capsule, has numerous winged (sometimes wingless) discoid seeds that rattle softly when the plant is shaken.

The approximately 50 species are found in the temperate and, to some degree, frigid zones of the northern hemisphere. The USSR has about 25 species, which grow mainly on wet meadows. R. vernalis (formerly R. major) and R. minor grow predominantly in forest and forest-steppe zones in wet meadows, along forest edges and the shores of bodies of water, and sometimes in fields. Both species, as well as many other species of Rhinanthus, parasitize the roots of meadow grasses and lower the yield and quality of hay. The plants are poisonous, since they contain the alkaloid rhinanthin. R. apterus, which is found predominantly in the forest zone of the European part of Western Siberia, is a weed of plantings of winter grains, mainly rye and wheat.

REFERENCE

Kott, S. A. Sornye rasteniia i bor’ba s nimi, 3rd ed. Moscow, 1961.

T. V. EGOROVA

References in periodicals archive ?
To encourage flowers that you like, you may need to reduce the grasses' vigour by introducing semi-parasitic plants such as Rhinanthus (rattle) and Euphrasia (eyebright).
To encourage flowers that you like, you may need to reduce the grasses' vigour by introducing semiparasitic plants such as Rhinanthus (rattle) and Euphrasia (eyebright).
For example, restricted dispersal of Vaccinium myrtillus, Rhinanthus minor, Rumex acetosa, Cicerbita alpina, Trollius europaeus and Campanula thyrsoides appears to be the foremost reason for the patchy distribution, because seeds added manually to unoccupied sites resulted in successful germination (Lindgren et al, 2007; Frei et al., 2012).
stojanovii, Pastinaca hirsuta, Potentilla inclinata, Plantago holosteum, Rhinanthus rumelicus, Trifolium velenovskyi, Dianthus cruentus, Viola tricolor subsp.
Facilitating grassland diversification using the hemiparasitic plant Rhinanthus minor.
A one-way bias in ethological isolation, where barriers to pollen flow between the two species are not symmetrical, has also been observed in the relationship between Bombus and Rhinanthus (Kwak, 1978).
The unim proved Takeley Meadows are very herb-rich, containing uncommon Essex plants such as pyramidal orchid Anacamptis pyramidalis, spiny restharrow Ononis spinosa and yellow-rattle Rhinanthus minor.
'Craith unnos' wedyn am y feddyges las (Prunella vulgaris; selfheal) a sawl enw am y gribell felen (Rhinanthus minor; yellow rattle), sef clychau'r meirch, pen siarad, pwrs broga, arian cr a chlychau bach.
Reciprocal parasitization in Rhinanthus serotinus: a model system of physiological integration in clonal plants.
The definition of a species follows Krok and Almquist (1994) except that Alchemilla spp., Hieracium spp., Rhinanthus groenlandicus + R.