Yellow bedstrawGalium verum L.
A.k.a. yellow spring bedstraw, lady's bedstraw
- ANPC Rank –
- Moss, Flora of Alberta – page 511
- Global Invasive Species Database – No
- NatureServe Rank – not yet assessed
- Haber, Upland –
- Haber, Wetland –
- CWF, Status & Invasive Range – xx
- Alberta Revegetation Guidelines – xx
- The Nature Conservancy – Yes 
- CBCN – xx
- AB Weed – No
Robert W. Freckmann Herbarium 
exerpted from IRIS, The Alberta Native Plant Council Newsletter, No. 75 January 2015, page 8
Another unusual Eurasian weed present in the hayfield and forested areas in the Oleskiw River valley is yellow or lady’s bedstraw, Galium verum. A perennial herb, growing to a maximum of 80 cm, this is rhizomatous and can form dense patches, both in the field and in open areas in the riparian forest, where again it seems concentrated along the trails. It has small yellow flowers in dense clusters, compared with the native northern bedstraw (G. boreale), also present, which has white flowers in somewhat more open clusters. In G. verum the leaves are in whorls of eight on hairy, rounded stems, and are very narrow and pointed; in G. boreale they are in whorls of four and are broader, with three distinct nerves. Fruits are densely hairy in G. boreale but smooth in G. verum. A hybrid between these two species appears to occur sporadically in both the field and the forest. It has leaves with revolute margins in whorls of six to eight as in G. verum, together with smooth fruits, but its flowers are white and its leaves intermediate in width between the two species and with rounded tips; its stems are square and smooth. Yellow bedstraw occurs widely across North America except for the far south but is apparently absent from Saskatchewan.