David P. quotes Ian Young. Ian studies all his "bulbs" (sensu latu) very closely, often lifting them at different stages of growth to fully observe and photograph their habits. These photos are often used in his talks and in his weekly Bulb Log. As it happens, there is such a photo in this week's Bulb Log, number 23 of 2014 : http://srgc.org.uk/logs/logdir/… where you can see that not only the frit. bulb but also all the rice grains are renewed. The picture is of Fritillaria camschatcensis. hope this helps...... M.Young