CRASSULACEAE 



429 



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

 from rain by hairs. 



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

 (8 species), more rarely by Ichneumonids (1), beetles (1), and hover-flies (2). Schulz 

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



1010. S. Funckii F. Braun. (Herm. Miiller, ' Alpenblumen,' pp. 84-6.) The 

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

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

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



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



Fig. 145. Sempervivum Funckii, Braun (after Herm. Miiller). A. Flower in the second (female) 

 stage (x 2i). B. Part of the reproductive organs in the first (predominatingly male) stage (x 7). C. Part 

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

 fi, filament ; n, nectary ; ov, ovary; p, petal ; j, sepal ; si, stigma. 



ion. S. montanum L. (Herm. Miiller, '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 autogamy. 



