Darwin-Hooker Letters : Letter from C. R. Darwin to J. D. Hooker 2 July 1874
Darwin, Charles Robert
Darwin-Hooker Letters
<p style='text-align: justify;'>Thinks Frank and he have worked out <i>Pinguicula</i> well and they long to attack <i>Utricularia</i>. Tried several plants with sticky glandular hairs; some few absorb ammonia, but the greater number do not. If JDH sends plant or seed of <i>Lychnis</i> CD will examine it to see whether it catches many flies. Asa Gray has written him much about <i>Sarracenia</i>, with a specimen showing the splendid dodge by which ground insects are enticed up and then drowned. Describes how it may be investigated, to see whether it absorbs decayed matter from flies, or ammonia thus generated.</p>