Angiosperms: Dicotyledons
Rubiaceae
Bedstraw Family
Wild madderGalium obtusum Bigelow
- Notes: Galium obtusum is similar to G. bore-ale except more sprawling. The stems are up to 2’ long, ridged, but without hairs. The leaves are shorter and with only one vein. The leaves are congested below inflorescence at flowering. There are fewer flowers in the little-branched inflorescence. The corolla is smaller (1/32” long). The fruits are smooth, 3/32” in diameter, and often with only one seed maturing in each fruit. Flowering is from early June to early July, and fruiting begins in mid-June. G. obtusum is common on low, moist prairies and in marshes, is sometimes in open woods, and is less frequent to the west and south.
- Bibliography from Biodiversity Heritage Library
- Vascular Plants of Iowa
Can be found in these counties: