Dandy, Watsonia 4:47 (1957).
Synonymy: G. tricorne Stokes in With., Bot. Arr. Brit. Pl. edn 2, 1:153 (1787).
Common name: Three-horned bedstraw, rough corn bedstraw.
Annuals with weak stems up to 60 cm long, scrambling; stems quadrangular, with short recurred hairs along the raised ridges, leaves and stipules equal, in whorls of 4 below but usually in whorls of 6-8 when flowering, oblanceolate, 10-50 mm long, acute to cuspidate, with usually densely placed recurved short hairs along the slightly recurved margin and the main vein on the undersurface, spreading to recurved later.
Inflorescences axillary, 2 per node and each usually with 3 flowers, with peduncles shorter than the subtending leaves; corolla white.
Fruit 3-5 mm long, with 2 broadly reniform to hemispherical mericarps, loosely attached to one another, each densely covered with acute tubercles; fruiting pedicels recurved.
Ross-Craig (1960) Drawings Brit. Pl. 14: pl. 23.
S.Aust.: EA, EP, NL, YP, SL, KI, SE. W.Aust.; N.S.W.; Vic. Native to most parts of Europe and as far as central Asia but now a widely introduced weed.
Flowering time: mainly Aug. — Jan.
SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
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