SCITAMINEAE 423 



2663. M. (Calathea) Zebrina Sims, and 2664. M. discolor Lindl. have 

 been examined by Hildebrand (Bot. Ztg., Leipzig, xxviii, 1870, pp. 617-20)^ 



2665. M. bicolor Ker-Gawl., and 2666. M. cannifolia have been examined 

 by Delpino. 



850. Thalia L. 



2667. T. dealbata Fras. Delpino describes the flower mechanism as similar 

 to that of Maranta. 



Visitors. Delpino observed the honey-bee at Florence. 



851. Canna L. 



Delpino ('Sugli appar. de fecondaz. nelle piante autocarp.,' p. 23) says that in 

 species of this genus the pollen deposited by the anthers on the stylar disk is removed 

 by insects and transferred to the stigmas of other flowers. Hildebrand (Bot. Ztg., 

 Leipzig, XXV, 1867, p. 277, ' Geschlechts-Vert. b. d. Pfl.,' p. 69) states that automatic 

 self-pollination frequently takes place when the pollen is shed. 



852. Strelitzia Ait. 



2668. S. Reginae Ait. In this species insects touch the stigma in alighting, 

 and as they force their way into the flower the two inner, lower petals surrounding 

 the five anthers are pressed apart, and the pollen dusts the under-side of the 

 visitors. A. Wagner (Ber. d. bot. Ges., Berlin, xii, 1894) has treated the anatomy 

 and oecology of the flowers in detail. 



Visitors. Delpino, 'Ult. oss.,' p. 232, 'Applicaz. d. teor. Darwin.,' p. 4; 

 Hildebrand, Bot. Ztg., Leipzig, xxvii, 1869, p. 508, suppose these to be humming- 

 birds, and this is confirmed by Darwin's observations. 



CIX. ORDER HAEMODORACEAE BENTH. ET HOOK. 



Literature. Pax, 'Haemodoraceae,' in Engler u. Prantl., 'D. nat. Pflanzenfam.,' 

 n, 5, pp. 92-6. 



853. Wachendorfia Burm. Wachend. 



2669. W. paniculata L. J. Wilson describes the species as dimorphous 

 (Trans. Bot. Soc, Edinburgh, xvii, 1887, pp. 73-7; Bot. Jaarb. Dodonaea, Ghent, 

 ii, 1890, p. 158). 



ex. ORDER IRIDEAE JUSS. 



In addition to the two brightly coloured perianth whorls the three petaloid 

 stylar branches sometimes serve to increase the conspicuousness of the flowers. 



854. Crocus L. 



Protandrous lepidopterid flowers. 



2670. C. vernus All. (=C. albiflorus Kit., and C. sativus, var. (b) vemus Z.). 

 (Sprengel, 'Entd. Geh.,' pp. 68-9 ; Ricca, Atti soc. ital. sc. nat., Milano, xiii, 1870; 



