184 



15. X taking possession of the filament produced by y. 

 •16. Stamen wanting, extraordinary length of s'. 



17. Transverse section of the ovary, A: at the base, B: at the middle. 



18. Diagrams of both flowers of a cicinnus. A l^t (right) B 2*1 (left flower). It is 

 supposed that the outer alae, the styles and the inner staminodes are auti- 

 dromous. In order to explain the pseudo-homodrorny one must admit that in 

 the left flower labellum and x exchange qualities. The stamen develops in 

 both flowers on the left respectively opposed to y and §. 



19. The "third" flower of a cicinnus, b entire, a with omission of cc. 



20. The same, tube formed by the styles grown out to a coronula. 



21. Tube of a red Canna opened, style bifurcating, s' rudimentary style behind 

 which the filament f. 



22. Vertical section through sepal, y and s' ; between y and s' the filament is 

 shown. 



23. Style with stigma S and its wing w with complementary stigma o-. 



BOOKS AND PAMPHLETS CONSULTED. 



I. Annales des sciences naturelles, T. XXYII (1829). 

 II. Organogenie de la fleur par Payer (1857). 



III. Berichte fiber die Naturforscher-Versammlung zu Konigsberg (1800). 



IV. Journal of the Linnean Society X (1869). 

 V. Botanische Zeitung (1873). 



VI. A. W. EiCHLER, Bliithendiagramme I (1875). 

 VII. Berichte der D. Bot. Gesellschaft (1884). 

 VIII. » » » » (1888). 



IX. Penzig, Pflanzenteratologie II (1894). 

 X. Nederl. Kruidk. Archief, 3e Serie II Deel (1902). 

 XI. Annales du Jardin bot. de Buitenzorg, 2^ Serie IV (1904). 

 XII. Das Pflanzenreich, 56 Heft IV. 47. Cannaceae von Fr. Kranzlin (1912). 



XIII. Annales du Jardin bot. de Buitenzorg, 2e Serie XIII (1914). 



XIV. » » » » » » „ » XIV (1915). 



