. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. Fig. 324. Acanihus spinosus, L. {horn TiSLtMTit). A. Flower in the Srsl (male) sta^e, seen from above after re- moval of the upper protective sepal and the reduced upper lip. B. Do., in the second (hermaphrodite) stage, seen from below after removal of the lower lip. a, anthers; n, nectary ; .s, stigma. stated.— Knuth (Kiel Botanic Garden), 2 humble-bees (Bombus terrester L. 5, and B. hortorum Z. 5), which crept under the sepal functioning as an u
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. Fig. 324. Acanihus spinosus, L. {horn TiSLtMTit). A. Flower in the Srsl (male) sta^e, seen from above after re- moval of the upper protective sepal and the reduced upper lip. B. Do., in the second (hermaphrodite) stage, seen from below after removal of the lower lip. a, anthers; n, nectary ; .s, stigma. stated.— Knuth (Kiel Botanic Garden), 2 humble-bees (Bombus terrester L. 5, and B. hortorum Z. 5), which crept under the sepal functioning as an upper lip, and remained skg. nectar for some time; also the earwig Forficula auricularia L., dvg. the flowers. Delpino, 2 humble-bees—Bombus italicus F., and B. terrester L. 2201. A. mollis L., and 2202. A. longifolius Poir.—Kerner states that the flower mechanism of these two species agrees with that of A. spinosus. Visitors.—Delpino observed the same 2 humble-bees as for A. 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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