382 



EXPERIMENT STATION BULLETIN. 



ST. JOHN'S-WORT FAMILY. HYPERICACEAE. 



Herbs or shrubs, leaves with pellucid dots, punctate or black. A small family 

 consisting of about 280 species, ^.native of temperate and warm regions. 



Fig. 150.(133). 



Commonest. John's-wort. Hypericum perforatum L. A herbaceous perennial. 

 30-60 cm. high, spreading by runners at the base; leaves sessile, elliptical with pellucid 

 dots; petals deep yellow, black-dotted along the margins, twice as long as the sepals; 

 stamens numerous; pistil three-celled. Rather bad in old meadows and roadsides. 

 Introduced from Europe. Of eighteen or more native species none are weeds. 



