452 CONSERVATIVE ORGANS. [LECT. IX. 



Bulliard detected their seeds ; and there is every 

 reason for believing that these and many of the 

 other tribes of lower plants produce both seminal 

 and lateral progeny. 



The BULB having been already denned (p. 164), 

 and also described as it appears attached to the 

 roots of plants ; we have now to examine it only 

 as it appears upon the stem *. It is found on the 

 stems of several species of the Lily, on that of bul- 

 biferous Coralwort, Dentaria bulbifera, and of 

 drooping Saxifrage, Saxifraga cernua, &c.*f- seated 

 in .the axilla of the leaves (Plate 4, fig. 9, a. a.). 

 If we take the Tiger Lily, Lilium tigrinum, as 

 an example, we shall find the bulbs appearing 

 like a white speck in the axilla of the leaves long- 

 before these expand. A few days, however, after 

 the expansion of the leaf the bulb assumes a py- 

 ramidal form, which gradually enlarging and 

 swelling in the centre, at length appears of an 

 ovate or nearly globular shape, with a keel ter- 

 minating in a point. During this transformation 



* Mirbel denominates the caulinar bulb, Bulbille, Bulbillus, 

 and thus defines it : " Petite bulbe qui nait sur differentes par- 

 " ties de la plante hors de terre, se detache et prend racine." 

 Element de Phys. veg. Partie 2, p. 634. 



I Sir J. E. Smith says he has seen bulbs form on the flower- 

 stalk of three-coloured Lachenalia, Lachenalia tricolor, whilst 

 lying for many weeks between paper to dry ; and these on being 

 put into the ground have become perfect plants, though of 

 slow growth. Infrocl, to Botany, p. 112, note. 



