Organography of plants, especially of the archegoniatae and spermaphyta . es a flower or a vegetativeaxillary shoot. In many Mammillarieaethe flowers arise also upon the apex of themammillae and then we have quite similar relationships to those in otherplants where the flowers or inflorescences are leaf-borne. We must notconfuse with these the cases where the flowers are falsely described asleaf-borne, as for example in species of Limnanthemum ^ or in the case ofphylloclades ^. Epiphyllous inflorescence. We find the inflorescence of someDicotyledones on the leaves ^ for example in Helwingia ja
Organography of plants, especially of the archegoniatae and spermaphyta . es a flower or a vegetativeaxillary shoot. In many Mammillarieaethe flowers arise also upon the apex of themammillae and then we have quite similar relationships to those in otherplants where the flowers or inflorescences are leaf-borne. We must notconfuse with these the cases where the flowers are falsely described asleaf-borne, as for example in species of Limnanthemum ^ or in the case ofphylloclades ^. Epiphyllous inflorescence. We find the inflorescence of someDicotyledones on the leaves ^ for example in Helwingia japonica, Dulongia ^ See Goebel, Pflanzenbiologische Schilderungen, i (18S9), P- 79 5 Ganong, Beitrage zur Kenntnissder Morphologic und Biologic der Cakteen,in Flora,lxxix(ErganzungsbandzumJahrgang 1894), p. 48. ^ See Goebel, op. cit. ^ See Goebel, Morphologische tind biologische Studien : VI. Limnanthemum, in Annales du jardinbotanique de Buitenzorg, ix (1891). * Sec p. 449. * Sec C. de Candolle, Recherches sur les inflorescences epiphylles, in Memoires de la Society de. Fig. 294. Mammillaria. Diagrammatic repre-sentation of a vegetative point with forked mam-millae in longitudinal section. VP vegetativepoint, the young; mammilla to the right consistsof leaf, B^ and its axillary shoot, V, grown up uponit. The vegetative point of the axillary shootwill divide as the mammilla to the left showsinto an upper, V\ and a lower, J^, separated bypermanent tissue, F. B. Syst^ leaf-bundles;P. Syst, axillary shoot-bundles ; 6. Syst, mainshoot bundles. After Ganong. EPIPHYLLOUS INFLORESCENCE 437 acuminata (Phyllonoma), species of Chailletia, Stephanodium peru-vianum, Polycardia phyllanthoides, Begonia sinuata, B. prolifera, andothers. In the most of these instances we might have to deal witha displacement of the btid from the leaf-axil and a concrescence of itwith the leaf, taking place in exactly the same way as was described in thecase of the Cactaceae and of Spathiphyllum platyspatha ^. S
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