496 ANGIOSPERMAEMONOCOTYLEDONES 



1889.) In this species, bearing 'the largest flower in the world,' there is a huge 

 spathe in the form of a bright green funnel, white above, with a rich wine-red inner 

 surface. The cream-yellow spadix, attaining a length of i\ m., projects from this 

 cup (i-20 cm. broad), its penetrating smell of flesh attracting swarms of flies in 

 its native place, Sumatra. These enter the lower part of the spathe and effect 

 pollination. 



2923. A. campanulatus Blume (= Arum campanulatum Roxb.). Delpino 

 ('Ult. OSS.,' p. 238) supposes that this East Indian species is pollinated by flesh-flies. 

 Arcangeli (Nuovo Giorn. bot. ital., Firenze, xv, 1883) says that the visitors are 

 almost exclusively carrion-loving beetles of the genera Saprinus, Dermestes, and 

 Oxytelus. 



2924. A. variabilis Blume. Delpino (op. cit.) supposes this species to be 

 pollinated by snails. 



946. Typhonium Schott. 



2925. T. cuspidatum Decne, Delpino (op. cit.) supposes this species to be 

 pollinated by snails, which are attracted by its pleasant odour, creep through a narrow 

 opening to the female flowers, which are surrounded by the spathe and mature first. 

 The snails will pollinate the stigmas if they come from inflorescences in the second 

 stage with mature anthers. After pollination has been eff"ected, the opening which 

 leads to the female flowers closes, and the snails still present in the cavity are killed 

 by a caustic (corrosive) liquid now secreted inside the spathe, being thus prevented 

 from devouring the inflorescence. 



947. Pinellia Tenore. 



2926. P. tripartita Schott (= Atherurus tripartitus Blume). As No. 2925. 



948. Anthtirium Schott. 

 Species of this genus agree with No. 2925. 



2927. A. Pothos. Delpino (' Altri appar. dicog. recent, oss.,' p. 62) describes 

 this species as protogynous, with short-lived stigmas. 



949. Alocasia Neck. 



2928. A. odora C. Koch. As No. 2925. 



950. Ambrosinia L. 



2929. A. Bassii L. (Delpino, *Ult. oss.,' pp. 230-1.) In flowers of thijj 

 species the stigmas are situated outside at the end of the spadix, and the anther 

 inside the spathe, so that fly visitors must first touch the former and then the latter^ 

 thus always effecting cross-pollination. 



951. Stylochiton Lepr. 



2930. S. hypogeum Lepr., and 2931. S. lancifolius Kotschy et Peyr.- 

 Engler (' Pflanzenleben unter d. Erde ') states that the inflorescences in these speciesj 

 consisting of male and female flowers, are surrounded by a spathe and remain belovrj 

 the ground. Only the tip projects, and the insects effecting pollination creep dowi 

 from this to the male and female flowers below. 



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