Pammel — Anatomical Characters of Seeds of Leguminosae. 217 



Synopsis of Tribes and Genera. 



The following synopsis is based on the characters of the 

 testa, endosperm, and cotyledons. I have followed the 

 arrangement given by Bentham and Hooker in their ** Genera 

 Plantarum." 



PAPIL.IOXACEAE. 



Podalyrieae . 



Light line close under the cuticle; osteosclerids I-shaped; 

 nutrient layer and endosperm well developed. Embryo con- 

 tains fat and protein grains ; starch is absent ; palisade cells 

 present. 



1. Malpighian cells covered with resiniferous 



bodies Baptisia, 



1. Malpighian cells not reisiniferous Thermopsis. 



Sophoreae. 



Light line close under the cuticle; osteosclerids I-shaped ; 

 nutrient layer compressed ; endosperm well developed. Pali- 

 sade cells present. 



1. Reserve material consists of fat and aleu- 



rone grains Cladrastis. 



1. Eeserve material consists of fat, aleurone 



grains, and small starch grains Sophora. 



Genisteae. 



Light line close under the culticle ; osteosclerids I-shaped ; 

 endosperm well developed or nearly absent. Palisade cells 

 present or absent. 



1. Endosperm nearly absent Lupimis, 



1. Endosperm more developed ("2). 



2. Endosperm not copious Crotalaria, 



2. Endosperm copious (3). 



3. Nutrient layer much compressed Laburnum. 



3. Nutrient layer less compressed Genista. 



Trifolieae. 



Cuticularized layer of the Malpighian cells well developed; 

 osteosclerids rhomboidal, with longitudinal pore-canals ; en- 

 dosperm gelatinous, rather copious ; reserve material consists 

 of aleurone grains, fat and small starch grains. Cotyledons 

 with palisade cells. 



1. Cone-like projections of the cuticularized 



layer absent Trifolium. 



2. Cone-like projections present. .Medicago and Melilotus. 



