188 MANUAL OF BOTANY 



Class X.— MONOCOTYLEDONES. 



The general histology as well as the morphology of this group 

 has been already treated of m some detail. 



The class is divided by Bentham and Hooker into the 

 following seven series, each including several natural orders. 



Series 1. — Microspermce. 



Character s. — At least the inner whorl of the perianth peta- 

 loid. Ovary inferior, 1- celled with 3 parietal placentae, or rarely 3- 

 celled with axile placentae ; seeds very small, numerous, exal- 

 buminous. 



Order 1. Hydrocharidaceae. 



2. Burmanniaceae. 



3. Orchidaceae. 



4. Apostasiaceae. 



Series 2. — Ej^igynm. 

 C_h ar a c t e r s. — At least the inner whorl of the perianth peta- 



Series 3. — Coronarice. 



Characters. — At least the inner whorl of the perianth peta- 

 loid. Ovary free, or very slightly adlierent at base. Albumen 

 copious. 



Order 14. Eoxburghiaceae. 



15. Liliaceae. 



16. Philesiaceae. 



17. Melanthaceae or Colchicaceae. 



18. Smilaceae. 



