SCROPHULARINEAE 



229 



towards the upper anthers later, for the style does not grow during anthesis at the 

 same rate as the corolla. Automatic self-pollination is in any case inevitable towards 

 the end of anthesis. 



Kerner, however, did not observe elongation of the corolla, but says that towards 

 the end of anthesis the style bends so far downwards as to bring the stigma into the 

 line of fall of the pollen. 



Fig. 321. Euphrasia minima, Jacq. (after Herm. Muller). A. Flower in the first stage, seen 



somewhat obliquely from in front and above. B. A smaller do., seen directly from the front. C. An 

 older flower, with stigma bent under the upper anthers. D. Do., seen obliquely from the right front. 



, Still older do., with stigma abundantly self-pollinated. /^ The two right stamens, seen from outside, 

 and more strongly magnified. G. Do., seen from inside. //. Ovary and nectary. (A-E, and H X ;.) 

 ca, calyx ; d, anther-process ; A, hairs on anthers ; , nectary ; s(, stigma. 



674. Trixago Stev. 



2177. T. apula Stev. (= Bartsia Trixago Z.). (Kerner, 'Nat. Hist. PI.,' Eng. 

 lEd. I, II, p. 353.) In this Dalmatian species each anther possesses a downwardly- 

 Ipointing process, which is pushed to one side by insects, thus opening the pollen 

 ireceptacle and causing pollen to be sprinkled on the head and back of the visitors. 



675. Lathraea L. 



Protogynous bee flowers. Nectar (according to Stadler) secreted by a gland 

 [resembling a flattened bag, lying on the lower side of the ovary ; it is stored at the 

 Ibase of the corolla-tube. Kerner says that the flowers are only entomophilous at 

 [first, becoming anemophilous towards the end of anthesis. 



2178. L. squamaria L. (W. J. Behrens, 'Lehrbuch d. Botanik'; Knuth, 

 I'D. Bestaubungseinricht. d. Orobancheen ' ; Kerner, 'Nat. Hist. PI.,' Eng. Ed. i, 

 [II, pp. 330-1 ; Warnstorf, Schr. natw. Ver., Wernigerode, xi, 1896.) The flowers, 



