APPENDIX I 419 



ments or none; stamens 6 or less (i); ovary i or 2-3- 

 locular ; style persistent. 



Sub-Family i. Pothoidese. 

 Tribe r. Acorece. 



Genus. Acorus (Vol. Ill, p. 361). 

 Sub-Family 2. Aroidese. 

 Tribe 2. ArecB. 



Genus. Arum (Vol. Ill, p. 356). 

 Family 2. Lemnaceae (Vol. Ill, p. 363). — Flowers 

 unisexual, plant monoeeious. Inflorescence of 2 male 

 flowers and i female flower in reduced spathe, male flower 

 of I stamen, female of i carpel. 

 Sub-Family i. Lemnoideae. 



Genera. Spirodela^ Lemna (Vol. Ill, p. 364). 

 Sub-Family 2. Wolffoideae. 



Gemis. lVolffia{Yo\. III. p. 366). 



B. — Orders with Typically Pentacyclic Flowers. Whorls 

 Typically Isornerous, mostly yMerous. 

 Order 5. Farinose. — Flowers homo- or hetero- 

 chlamydeous, 3- or 2-merous, perianth usually 3 + 3, 

 stamens 3 -I- 3, gynoecium (3), one whorl of stamens 

 may be wanting, or all the stamens but i ; ovules 

 often orthotropous ; endosperm mealy. 



Family. Eriocaulacese (Vol. Ill, p. 344). — Flowers 

 inconspicuous, unisexual, in involucrate heads; plant usually 

 monoecious ; perianth of scales, or in 2 whorls (3 + 3) ; 

 stamens 4 or 6 ; ovary 2-3-locular ; stigmas 2-3 ; fruit a 

 capsule. 



Sub-Family. Eriocauloideae. 



Genus. Eriocaulon (Vol. Ill, p. 344). 



Order 6. LiLiiFLORiE. — Similar to the last, but 



