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Echeveria. (see for specific name under Bloom)

Circumnutation of leaf.

As young leaves are thick & fleshy & the younger ones short & fleshy & broad, they I wished to ascertain whether any trace of circumnutation cd be detected. A young leaf .75 long & .28 of inch broad,— one of the outer ones on shoot branch a shoot little shoot borne by a curved very thick fleshy branch 4 inches long, resting firmly on rim of pot, & so in capable of movement in itself was selected for observation  [sketch]  & movements traced on vertical glass, under skylight—

Temp. were on 25th to 28th viz -23° – 24 1/2 C. — Apex of leaf 12 1/4 inches from glass, so movements considerably magnified. See Tracing. Although on 26th there was considerable movement upwards, (i which may have been due to light from skylight)— & though the tracing cannot be considered as perfectly accurate, yet we may confidently believe that this small thick-fleshy young leaf circumnutated. No doubt the weather from being very warm was highly favourable to its growth.

The leaf to which glass filament was attached was one of outer ones of rosette to which it belonged, & this allowed it free freer movement than the still younger ones could have exhibited.─