CRASSULACEAE 



429 



The abundant nectar is secreted by a disk beneath ttie pistil, and is protected 

 from rain by hairs. 



Visitors. — Herm. Wiiller states that the nectar is specially sought out by bees 

 (8 species), more rarely by Ichneumonids (i), beedes (i), and hover-flies (2). .Schuiz 

 mentions flies, bees, and Lepidoptera as frequent ; beetles as less so. 



loio. S. Funckii F. Braun. (Herm. Muller, ' Alpenblumen,' pp. 84-6.)— The 

 flowers of this species are also protandrous, but individual stigmas ofien become 

 receptive when only the first stamens have withered, so that self-pollination is 

 commoner than in S. Wulfeni. (Cf. Fig. 145.) 



Visitors. — Herm. Miiller observed 2 beetles, 6 bees, 9 Lepidoptera, and 3 flies. 



Fig. 145. Sentperz'iz'itni Fiaickii, Jirauii (after Herm. MUllor). A. Flout-r in the second (female) 

 stage (>: 24). B. Part of the reproclucti\e organs in the first (predominatinfjly malr) stagt; (- 7) C Part 

 of the same in the second (purely female) stage. D. A few carpels with mature stigmas. a-a\ anthers 

 //, filament; 77, nectary; (n\ ovar^; p, petal; s, sepal; .?/, stigma. 



lOii. S. montanum L. (Herm. IMiiller, 'Alpenblumen,' p. 86; Kerner, 'Nat. 

 Hist. Pi.,' Eng. Ed. i, II, pp. 344-5.) — The flower mechanism of this species agrees 

 with that of S. Funckii. Kerner states that the inner anthers do not dehisce till 

 the stigmas have withered, so that they serve for cross-pollination, while the outer 

 ones are concerned with autogamv. 



