Anatomy and Morphology of Utricularia brachiata. 12 i 
Gesneraceae, &c. which may double their thickness in the course of 
life. 1 
The Bladders. 
The bladders (Fig. 8) are numerous ; they are elliptical in 
profile, the length of the major axis being 1*1 mm., and of the 
Fig. 8. A.—Sagittal section of a bladder. I, upper lip. v, valve. 
c, collar. s, stalk, ph., vascular tissue (phloem). h, quadrifid absorptive 
hair. B.—Upper lip of bladder, fringed with gland-tipped tentacles. C.—Edge 
of valve (r) bearing unicellular processes ( p ). D.—Longitudinal section of 
young bladder. I, upper lip., v, valve. c, collar. gl., papillate gland. 
A., x 66. B, C, D, x about 200. 
minor 0-75 mm.; laterally they are somewhat compressed. The 
stalk is attached to the ventral surface, and the vascular tissue 
(phloem only) after entering the wall of the bladder passes down- 
Haberlandt. Physiologische Pflanzenanatomie, 1904, p. 358. 
1 
