148 Trans. Acad. Sci. of St. Louis. 



fat, protein grains, and small starch grains. Procambial 

 vessels well developed. — (St. Louis, Eggert,Mo. Bot. Gard.) 



Melilotus officinalis, Lam. 



PL Vlll.f.l-lc. 5. 



Testa with endosperm varying from 260 to 300 /j. in thick- 

 ness. The Malpighian cells of this species are longer than in 

 M. alba, and also more abundantly supplied with pigment. 

 The conical projections are longer. The osteosclerids are 

 longer and nearly as wide above as below. The longitudinal 

 canals as conspicuous and well-developed as in that species. 

 Cells of the nutrient layer, especially in the lower part, are 

 abundantly supplied with pigment and some tannin. The 

 walls of the aleurone cells are thick ; the mucilaginous reserve 

 cellulose and the thick-walled, elongated cells are not essen- 

 tially different from the last species. It also agrees with it 

 with respect to the embryo. — (Europe, Reverch., Mo. Bot. 

 Gard.) 



Medicago, Tourn. 



The seeds of several species have been studied by Harz, 

 Sempolowski and Nadelmann. The Malpighian cells are pro- 

 vided with conical projections as in Melilotus. The walls of 

 the osteosclerids are longitudinally striated; the aleurone 

 layer is very different from the mucilaginous endosperm. 

 The species are not exalbuminous as stated by Lubbock. 

 The seeds, especially of M. sativa, are variously colored. 

 Haberlandt, according to Harz, has determined that the 

 lighter colored seeds germinate more rapidly and better than 

 the dark-colored ones. 



Medicago sativa, L. 



PI. XXIV. f. 1 -Ih. 



Testa uniform in thickness; endosperm variable. 



Malpighian. Cells are 39-42 fj. long. Cuticule forms a 

 continuous surface; cuticularized layer with conical projec- 

 tions, conspicuous. With chlor-iodide of zinc it colors blue; 

 the cuticle, brown. The light line occurs below the cuticu- 

 larized layer; this colors light blue with the same reagent. 

 The remainder of the cell-wall colors dark blue. The cell- 

 cavity is large at the base, gradually tapering upward, small 



