(ε) Growth Experiments.
Plants of different types were taken from their habitat in March and planted in sandy soil in an unheated greenhouse at sea-level. They were abundantly supplied with moisture. The results were (i) No change in colour during the winter—i.e., no production of anthocyan; (ii) very rapid
growth in the spring, particularly in September; (iii) this new growth much greener and decidedly less hairy than that in the Cass Valley; (iv) general softness, succulence, and laxness of growth.