. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 524 ANGIOSPERMAE—MONOCOTYLEDONES each forming a boat-shaped cavity, in which the pollen rests while the air is calm. When the anthers are shaken by wind, this is removed little by little, until the loculi are completely Fig. 418. Arrhenantherunt clatius, Mert. et Koch (after Kerner). (i) Undehisced anther. 2) Dehisced do. (3) Spikeletwith open glumes, and anthers hanging down in still air. (4) Do., when the air is in motion. The anthers of one flower
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 524 ANGIOSPERMAE—MONOCOTYLEDONES each forming a boat-shaped cavity, in which the pollen rests while the air is calm. When the anthers are shaken by wind, this is removed little by little, until the loculi are completely Fig. 418. Arrhenantherunt clatius, Mert. et Koch (after Kerner). (i) Undehisced anther. 2) Dehisced do. (3) Spikeletwith open glumes, and anthers hanging down in still air. (4) Do., when the air is in motion. The anthers of one flower are sheddinfj their pollen, those of another have already done so (and one has dropped from its filament), those of a third have not dehisced and are pushing their way out from between the glumes. 1000, Avena L. 3023. A. Scheuchzeri All.—Kirchner (' Beitrage,' p. 8) describes this species as homogamous, but the stigmas remain receptive and hang down between the glumes when the anthers have fallen. 3024. A. pubescens L.—This species, according to Kirchner (' Flora v. Stutt- gart,' p, 134), is feebly protogynous with persistent stigmas. The anthers do not dehisce until a short time after the divergence of the glumes, while the stigmas are. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Knuth, Paul, 1854-1899; Knuth, Paul, 1854-1899; Mu?ller, Hermann, 1829-1883; Ainsworth Davis, J. R. (James Richard), 1861-1934. Oxford : Clarendon Press
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