36 
Seventeenth, eighteenth class. 
— Keel rostrate (beaked). 12 
12. Pod cylindric or 4-cornered, contracted at the joints 
Coronilla. 153. 
— Pod compressed, with deep notches on the inner (upper) 
edge.Hippocrepis. 155. 
13 (10). Style pubescent. Lig. pis .... 11 
— Style gen. glabr. Herbaceous or suffrutescent pis 15 
14. Pod inflated. Racemes 3—6-fld. FIs yellow. Ls with 
3—5 pairs of leaflets .... Colutea. 148. 
■— Pod compressed. Racemes many-fld. FIs white or red. 
Ls of 5 — 10 pairs of leaflets . . Robinia. 149. 
15. Pod 1-seeded, with prickly teeth. Wings very short 
(3 mm). Sainfoin ..... Onobrychis. 157. 
— Pod several-seeded. 16 
16. Pod with cells separated transversely, dividing at last 
into 1-seeded joints .... Hedysarum. 156. 
— Pod with 1 cell, or with 2 cells separated longitudinally 
16 a 
16a. Keel composed of 2 separate pets. Stipules 0 
Glycyrrhiza. 147* 
— Keel of 2 united pets . ..... 1 7 
17. Keel with an aciculate point under the obtuse tip 
Oxytropis. 151. 
— Keel without this point...... 18 
18. Pod 1-celled, inflated, stipitate in the calyx. FIs yellow 
Phaca. 150. 
— Pod imperfectly 2-celled, through the inflection of the 
upper suture.Astragalus. 152. 
19 (3). Petiole ending in a spine . . Astragalus. 152. 
— Petiole ending in a tendril or soft point . . 20 
20. Sta.-tube cut obliquely at the top (i. e. the free part 
of the upper sta. much longer than that of the lower) 
Vicia. 159. 
— Sta.-tube cut straight (the free part of all the stas 
of the same length) .... Lathyrus. 160. 
Cl. 18 . Polyadelphia. 
Here are found all the Hypericaceae : seps and pets 5 (yellow); stas 
numerous. Styles 3. Ls opp. or whorled, undiv., entire, often marked with trans¬ 
parent spots. 
1. Stas 3-adelphous. Seps almost equal Hypericum. 119. 
— Stas 5-adelplious. Seps unequal . Androseemum. 118. 
