KEY TO THE ORDERS 
PA 
odes s Pieced on the edge of a cup-shaped hy- 
t 
g 
pan Rosaceae in Order ROSALES. 
Sy of 2 2 oF several united carpels: stigmas or styles 
or seve 
Ovary, by Bbo dem 1- cell ed and 1-ovuled. 
. Lea ves with sheathing stipules (ocreae). 
Order POLYGONALES. 
Leaves, estipulate, or stipules present if they are not 
Trees or shrubs. 
Anthers opening by slits: ovary not seated in 
hypanthi Imaceae in Order a. 
Anthers aE by hinged valves: ovary seated 
n accrescent hypanthium. 
.Lauraceae in Order THYMELEALES. 
Herbs or vine 
Leaves with s l 
pu Horace B inflorescence spicate or 
o e. palmately veined. 
nabinaceae in Order URTICALES. 
E scari ous or hyaline: inflorescence 
ue blades pinnately veined. 
milies in Order CHENOPODIALES. 
Leaves without n pules; 
Sti entir Order CHENOPODIALES. 
Suas 2- cleft. 
Euphorbiaceae in Order EUPHORBBIALES. 
Ovary several-celled, or with several a, seyeral- 
ovu 
n Stamens h ypogynous, inserted under the gynoecium in 
mE the perfect flowers, not on a disk in the pistillate 
EIS 
Herbs. 
Flowers perfect. 
Ovary several-celled. 
Fruit baecate or nut-like, or a circum- 
Saisie capsule, the carpels terminal on 
the D 
milies in Order CHENOPODIALES. 
Fruit of pore DV lateral on the 
receptacle, each carpel circumscissile. 
enthoraceae in Order ROSALES. 
Ovary ces celle 
Sta E not ` tetradynamou S, 
Le ce rder CHENOPODIALES. 
Stanes tetradynamous : ovary 2-celled. 
Brassicaceae in Order PAPAVERALES. 
. Flowers SOHO o or dioecious, 
M. und ae raphe towards the axis of 
yn 
Euphorbiscede in Order EUPHORBIALES. 
Mrs me a a away from the axis 
e gyn 
Bu B in Order SAPINDALES. 
Trees or shrubs. 
Gynoecium 5- carpellary, the carpels nearly dis 
inct.  Buettneriaceae in Order MALVALES. 
Gynoecium 2-4-carpellary, the carpels nen 
Ovary 4-celled : fleshy maritime shru 
Ba tidaceae in ur CHENOPODIALES. 
Ovary 2-celled : plan nn fles 
acne in Order OLEALES. 
Stamens perigynous or epi e aes on the mar- 
gin of a el ad aaa or a 
Fruit a sama Families in Order SAPINDALES. 
Fruit n a v 
Fru Ü dE. or berry-like: shrubs or trees. 
Order RHAMNALES. 
Fr D acapsule: herbs. Order ARISTOLOCHIALES. 
Ovary inferio 
Flowers nor in involucrate heads. 
Fr uit 3-winged, a Into 3 nutlets. 
nia in Order RHAMNALES. 
Fruit neither. 3- winged. TOF splitting into carpels. 
‘Fru ita berry or a drupe, or nut-like, 
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