432 ANGIOSPERMAE—MONOCOTYLEDONES 



the sulphur-yellow flower is 19 mm. long, and funnel-shaped above. The bell-shaped 

 corona, provided with six blunt lobes, is 12 mm. long and 17 mm. broad. As the 

 stigma is situated above the anthers, it is brushed against by suitable visitors before 

 the latter. Both organs project far into the corona, and thus do not bar the entrance 

 to the perianth tube, which conceals the nectar at its base. 



Visitors. — Loew (Berlin Botanic Garden) observed the long-tongued bee 

 Anthophora pilipes F. 



2693. N. Jonqtiilla L. (Loew, 'Bliitenbiol. Beitrage,' II, pp. 83-4.) — The 

 perianth tube in this species is very long (30 mm.) and narrow (2 mm.). The three 

 upper anthers project about 2 mm. beyond the stigma, leaving free only three very 

 narrow entrances into the tube ; the tips of the lower ones are about 4 mm. distant 

 from the entrance. The protogynous flowers are undoubtedly adapted for pollination 

 by Lepidoptera. 



2694. N. polyanthus Loisel. (=N. Tazetta Z., according to the Index 

 Knuensis). — 



Visitors. — Loew (Berlin Botanic Garden) observed the bee Anthophora 

 pilipes F. 5. 



2695. N. primulinus Haw. (Loew, loc. cit.) — The anthers of the three 

 upper stamens in this species leave only three narrow entrances to the flower, 

 and project about one mm. beyond the stigma, which is somewhat longer than 

 the lower anthers, situated rather deeply in the perianth tube. 



2696. N. juncifolius Req. (Kerner, 'Nat. Hist. PI.,' Eng. Ed. i, II, p. 378.) 

 — Kerner describes the flowers of this species as being at first horizontal, and 

 becoming erect later on, so that autogamy can take place by fall of pollen. 



2697. N. Tazetta L. (Delpino, ' Altri appar. dicog. recent, oss.,' p. 59 ; 

 Arcangeli, ' Compend. d. Fl. ital.,' p. 677; Loew, 'Bliitenbiol. Beitrage,' II, p. 83; 

 Knuth, ' Bloemenbiol. Bijdragen.') — The fragrant flowers of this species are yellow 

 or white in colour, with a yellow or orange corona. The three upper anthers project 

 rather more than the three lower ones. They close up the throat except for six 

 narrow entrances. Loew says that the stigma is situated rather deeply below the 

 anthers. Arcangeli describes the style as only slightly shorter than the upper 

 stamens. Loew found the flowers protogynous. 



Visitors. — Delpino believes these to be chiefly nocturnal or crepuscular 

 Lepidoptera, but he observed the bee Anthophora pilipes F. I also saw the 

 same bee on garden plants in Kiel. 



862. Crinum L, 



The white, fragrant protandrous flowers of species belonging to this genus 

 are 15 cm. long, with strongly exserted stamens and stigma. Delpino saw them 

 to be visited by Lepidoptera at Florence. He supposes that in the native country 

 of these plants nectar-sucking birds also take part in their pollination. 



863. Pancratiiun Dill. 



2698. P. maritimum L. (Delpino, 'Altri appar. dicog. recent, oss.,' p. 56.) — 

 Delpino slates ihat flowers of this species conceal nectar so deeply that only 



