200 Trans. Acad. Sci. of St. Louis. 



because of its ready solubility. It is true that the crucial 

 test would be a study of it during germination. 



Clitoria Tern ate a, L. 



Testa and endosperm 415 fjL in thickness. Pigment and 

 tannin abundant in the Malpighian and lower portion of the 

 nutrient layers. Malpighian cells 140 fM long, each cell with 

 one or more chromatophores. Osteosclerids united or more 

 or less separated. The I-shaped cells thick-walled. The 

 cells of the lower part of the nutrient layer thicker-walled 

 than those of the upper part. The aleurone layer of the 

 endosperm thick-walled ; the remainder as in (7. Mariana. 

 The first row of cells of embryo nearly isodlametric. The 

 cells below are elongated and more loosely arranged. Cell- 

 walls comparatively thin. All of the cells contain fat and 

 protein but no starch. 



Amphicarpaea, L. {Falcata, Gmel.) 



Both of the species which I have studied contain endosperm, 

 remnants of the uucellus, and an abundance of pigment and 

 tannin. The osteosclerids are striated. Embryo contains fat 

 and protein but no starch. 



Amphicarpaea monoica, Nutt. (F. comosa, L., Kuntze.) 



PI. xvii. f. 3. 



Testa and endosperm 235 fi thick. An abundance of pig- 

 ment in the Malpighian cells and nutrient layer. The species 

 has been studied by Miss Schively, but her account is quite 

 inaccurate in details. The light line, which is well-developed, 

 is not shown in the figures nor described. 



Malpighian. Cells 120-150 /x long, brown, Cuticle some- 

 what uneven; cuticularized layer not pronounced; light line 

 below the cuticularized layer; several pores project into the 

 walls below the light line. The cavity is wide at the base, 

 gradually tapering upward, and is very narrow in the light 

 line region. 



Osteosderid, Cells 40-60 /i long, well-developed, longitu- 

 dinally striated, especially in the hilar region. I-shaped cells 

 with the upper and lower cross-bars nearly equal. Cells 

 contain some tannin and pigment. 



