The corky layers which take so prominent a share in the formation of the bark are similarly modified and subserve the same purpose.
But Perugia had no mind simply to subserve the papal interests.
The store of energy thus accumulatec and distributed has to subserve various purposes in the econom~ of the plant.
The flagellants reappeared, and made the state of religious trouble in Germany, provoked by the struggle between the papacy and Louis of Bavaria, subserve their cause.
The Berlin herbarium is especially rich in more recent collections, and other national herbaria sufficiently extensive to subserve the requirements of the systematic botanist exist at St Petersburg, Vienna, Leiden, Stockholm, Upsala, Copenhagen and Florence.