6 
10. — Fruit gynobasic, having the apices of the carpels united to 
the summit of the axis. 14 
Fruit not gynobasic. 
Calyx valvate in the bud. 12 
Calyx imbricate in the bud. 
Calyx irregular. 13 
Calyx regular. 
Carpels less than four. 11 
Carpels four or more. 
Seeds winged. CedrelaceyE. 
Seeds wingless. 
Stamens united into a long tube. MeliaCEyE. p. 84. 
Stamens separate or nearly so. 
Leaves dotted. AurantiacezE. p. 83.f 
Leaves without dots. BrexiaceyE. 
11. — * Seeds hairy or downy. Tawaricaceae. p. G3. 
Seeds not hairy. 
Ovules ascending or horizontal. Pri’TOSi'ORACEAJ. p, 57. 
Ovules suspended. CyrileacejE. 
12. — Anthers opening by pores. TremaNDRACEyE. 
Anthers opening by slits. 
Calyx enlarging in fruit. Ol^ACEJE. p. 279. 
Calyx continuing small. Icacixaceye. 
13. — Flowers symmetrical. Guttifek.e. 
Flowers unsymmetrical. 
Petals with appendages at base. SatixdaceyE. p. 88. 
Petals without appendages at base. 
Fruit a samara, with a membranaceous wing. 
Acerace.e. p. 91. 
Fruit not a samara. Flowers having a papilionaceous aspect. 
Ovary two celled. Poeygaeace.e. p. 92. 
Ovary one celled. Krameriace/E. 
14. — • Stamens arising from scales. SimarebaceyE. p. 83. 
Stamens not arising from scales. 
Styles separate at the apex. 15 
Styles wholly united into one. 
* 
