Rhinanthus serotinus, Rhinanthus angustifolius, SE: Höskallra,
DE: Großer Klappertopf, NL: Grote ratelaar,
UK: Greater Yellow-rattle

Scientific name:  Rhinanthus serotinus (Schönh.) Oborny
Synonym name:  Rhinanthus angustifolius CC Gmel.
Swedish name:  Höskallra
German name:  Großer Klappertopf
Nederlandse naam:  Grote ratelaar
English name:  Greater Yellow-rattle, Late-flowering Yellow Rattle
Family:  Orobanchaceae, Broomrape Family, Snyltrotsväxter

Sweden Wildflowers

Life form:  Perennial, hemiparasite
Stems:  Height 20-50 cm, erect, branched or unbranched; 4-edged especially in upper part
Leaves:  Opposite, stalkless; densely serrated
Inflorescence:  Flowers borne in spike-like groups, terminating stem and branches
Flowers:  Irregular corolla (zygomorphic), long, pale yellow, fused, bilabiate, long and arched tube; upper lip hooked, flat-sided, tip with 2 purple, tapered teeth; lower lip 3-lobed; calyx 4-lobed, oval, wide, lime green; stamens 4
Flowering Period:  June, July, August, September
Fruits:  Capsule, flat, brown
Habitat:  Roadsides, meadows, pastures
Distribution:  Quite common in Skåne - Jämtland

Rhinanthus serotinus, Rhinanthus angustifolius, Höskallra, Großer Klappertopf, Grote ratelaar, Greater Yellow-rattle, Late-flowering Yellow Rattle

Derivation of the botanical name:
Rhinanthus, rhin for "snout" and anthos for flower.
serotinus, late in flowering or ripening.
  • The standard author abbreviation Schönh is used to indicate Friedrich Christian Heinrich Schönheit (1707 – 1778), a German Protestant clergyman and botanist.
  • The standard author abbreviation Oborny is used to indicate Adolf Oborny (1840 – 1924), a Czech botanist.
  • The standard author abbreviation CC Gmel. is used to indicate Carl Christian Gmelin (1762 – 1837), a German botanist.

Flowers in Sweden

Vilda blommor i Sverige

Flora of Sweden online