Crossword-Solution: AVENA 5 letters, 20 clues 🏆 scrabble score: 8

Buckmann,[23] the wild English _Avena fatua_ can be converted by a few years of careful cultivation and selection into forms almost identical with two very distinct cultivated races.

Means of observation—Apogeotropism—Cytisus—Verbena—Beta—Gradual conversion of the movement of circumnutation into apogeotropism in Rubus, Lilium, Phalaris, Avena, and Brassica—Apogeotropism retarded by heliotropism—Effected by the aid of joints or pulvini—Movements of flower-peduncles of Oxalis—General remarks on apogeotropism—Geotropism—Movements of radicles—Burying of seed-capsules—Use of process—Trifolium subterraneum—Arachis—Amphicarpæa—Diageotropism—Conclusion.

Avena sativa (Gramineæ).—A cotyledon, 1½ inch in height, was placed in front of a north-east window, and the movement of the apex was traced on a horizontal glass during two days.

This view is strengthened by the fact that with Phalaris and Avena the first true leaf, which is bright green and no doubt decomposes carbonic acid, exhibits hardly a trace of heliotropism.

Nevertheless, no difference could be detected in the accuracy of their bending, whether they stood with their broad or narrow sides facing the light, or in any intermediate position; and so it was with the cotyledons of Avena sativa, which are likewise oval in section.