PRIMULACE.E 185 



some such monstrosity. The petioles of the adult plant are occasion- 

 ally adnate to the peduncles, which thus assume a caulescent 

 appearance. 



Leaves simple, radical, alternate, exstipulate, petiolate, radiately 

 five-nerved in seedlings, ultimately seven- to nine-nerved, irregularly 

 crenate at the margin, glabrous above and deep green marked with 

 grey, paler beneath, or more or less suffused with red, minutely and 

 papillosely pubescent ; petiole subterete, shallowly grooved towards 

 the base, papillosely and minutely pubescent. 



No. 1. Eeniform, five-nerved with the nerves radiating and in- 

 curved towards their tips where they branch and anastomose. 



Ultimate leaves broadly cordate, obtuse, seven- to nine-nerved, 

 with the midrib and some of the stronger nerves more or less 

 alternately penninerved ; all the lateral nerves incurve towards their 

 tips, and give off strong branches on their posterior side towards the 

 margin, forming large reticulations. Small branches are given off 

 into the crenatures. 



Gressner (Bot. Zeit. 1874, p. 837) says there is a slight eminence 

 which represents the second cotyledon, and which subsequently 

 develops into a leaf, so that Cyclamen has two cotyledons which 

 resemble leaves. Eichard, Treviranus, and Gaertner (who first 

 wrote about it) say only one. 



The germination of Cyclamen has been described by Gaertner, 1 

 Eichard, 2 Mirbel, 3 Treviranus, 4 Gressner, 5 and Darwin. 



The cotyledons first appear as two small eminences, one of which 

 makes no further growth, while the other develops into a green coty- 

 ledon resembling the true leaf of the plant. 



Dr. M. T. Masters (Gardener's Chron. 1887, p. 596) agrees with 

 Gaertner and Treviranus, as against Mirbel, that there is only one 

 cotyledon, but the first two, three, or even four leaves sometimes 

 have their petioles connate. 



Lysimachia ciliata, L. (fig. 501). 



Primary root tapering downwards and flexuose, giving off a few 

 lateral rootlets, but soon superseded by strong adventitious roots 

 from the hypocotyl. 



Hypocotyl short, erect, thickened upwards, glabrous, closely and 

 minutely dotted with red, 4-5 mm. long. 



Carpologia, vol. iii. p. 25. 



Analyse du Fruit, Paris, 1808, p. 83. English translation by Lindley, 

 Frt its and Seeds, London, 1819, p. 71. 



Ann. du Musee, vol. xvi., 1811, p. 454, tab. xvi. 



Symb. Phyt. Fasc. L, 1831, p. 86, and tab. iii., figs. 66-71. 



Bot. Zeit. 1874, pp. 801, 17, 31. 



