What colour is the flower of the milk thistle?
Basics of blue flower colouration This phenomenon we can observe in the morning glory (Ipomoea tricolor) and Japanese blue morning glory (Ipomoea nil) petals. During the flower development we can observe change of the flower colour form purple to blue. Morning glory has just one delphinidin type anthocyanin and the composition of it does not change during the flower development, but change of the colour is caused by increase of pH in vacuole of coloured cells from 6.6 in buds to 7.7 in fully matured flowers. During the early stage of development acidic pH is maintained by proton pumps, on the latter stage K+/H+ exchanger
Order of the Thistle other Orders. The Order's primary emblem is the thistle, the national flower of Scotland. The motto is "Nemo me impune lacessit" (Latin for "No one provokes me with impunity"). The same motto appears on the Royal Coat of Arms of the United Kingdom for use in Scotland and some pound coins, and is also the motto of the Royal Regiment of Scotland, Scots Guards, The Black Watch (Royal Highland Regiment) of Canada and Royal Scots Dragoon Guards. The patron saint of the Order is St Andrew. Most British orders of chivalry cover the whole United Kingdom, but the three most