PEA FAMILY 339 
many stout branching thorns from the trunk. Pods linear, 1 to 1} ft. 
long, twisted. Woods and along fences. May-July. 
4. GYMNOCLADUS, Lam. 
Tree with doubly feather-formed leaves with showy white, perfect or 
imperfect flowers in clusters. Pods sickle formed. 
G. dioica, (L.) Koch. (Fig. 5, pl. 74.) Kentucky Corres TREE. 
Large tree with rough bark. Leaflets broadly egg-shaped, rounded at 
base, 7 to 12, with or without the odd terminal leaflet. Rich woods. 
Southern part of our area. 
Famity XI.—PAPILIONACEAE. Pra FAmity 
Herbs, shrubs, vines and trees. Flowers perfect (with stamens 
and pistils), with the petals very unequal, the superior petal 
(known as the “standard” or “banner”) more or less com- 
pletely enclosing the two lateral ones and the two lower being more 
or less united (known as the “keel”). Stamens 10, generally in 
a group of 9, more or less united, with a single one free (dia- 
delphous) but less frequently all united in a single bundle (mono- 
delphous), or still less frequently all the stamens are free or sepa- 
rate. Pistil 1. Fruit a pod similar to that of the pea (a legume) 
with one, two or many seeds, dividing into two valves. 
Leaves generally simple, not divided into leaflets. 
Bouswhay shay cee te oN cg the ee! aR eG enists: 
Rodssmuch inilated:.: £2) 3° 2-2. =” Crotalaria 
Leaflets 3. 
The three leaflets springing from a common center. (Tx- 
ample, Clover.) 
The two stipules similar to leaflets, giving appear- 
SUC On oO leanleise Oo echt dt) a. ae oe MOLDS 
The stipules differing from the leaflets. 
Stamens 10, all distinct and equal, flowers yel- 
ROW Aa! cists ie el eee yeiich © a oe ee SAD EISTS 
Stamens 10, 1 distinct, 9 united in a group. 
Pod (legume) sickle-shaped or spiral Medicago 
Pod, egg-shaped or globose, not included in 
the calyx; flowers in terminal, elongated 
elnsterss:3.- sialsw sede fs, 2, Mebilotas 
Pod included in the calyx; flowers in 
rounded head “ay say a. = <4 | Trifolium 
The 3 leaflets arranged as a pair and an odd one. 
