316 The Flowering Plants of Western India. 



III. Perianth none, or sometimes (in Aroidese) of scales, 

 stamens various. 



ORDER 123. PANDANACE^;. Trees or shrubs, flowers on a 



spadix. 

 ORDER 124, AROIDE^:. Herbs, flowers on a spadix, enclosed 



in a spathe. 

 ORDER 125. LEMNACE.&. Very small floating plants, 



stamens 1 or 2, 



IV. Not included in the above. 



ORDER 112. ORCHIDE^. Herbs with very irregular con- 

 spicuous flowers, stamens and style united into a 

 column. 



ORDER 127. NAIADACE.E. Aquatic plants with perianth and 

 stamens various. 



ORDER 110. HYDROCH ABIDED . 



Aquatic herbs with undivided leaves, flowers unisexual, 

 enclosed in a spathe, perianth 6-divided in two series, and there- 

 fore representing sepals and petals, stamens and styles 3 to 12, 

 ovary inferior, fruit membranous or fleshy. 



Many of the species of this order are so small that the parts 

 of the flower are quite indistinguishable except when much magni- 

 fied : in other species all the parts are of good size and well 

 developed (If.). 



1. HYDRILLA. A submerged dioecious herb, leaves whorled, 

 sepals petals and stamens 3, styles 2 or 3, stigmas 3. 



2. LAGEROSIPHON. Submerged dioecious herbs, leaves scat- 

 tered, male flowers many together, female solitary; anthers 

 2 or 3 with often 3 staminodes, ovary oblong produced into a 

 fi liform beak, styles 3. 



3. VALLISNERIA. A submerged tufted dioecious herb, leaves 

 very long linear, male flowers very numerous, female solitary 

 at the end of a very long thread-like spiral scape ; sepals 3, 

 petals none, stamens one to three, anthers twin, stigmas 3, 

 fruit linear included in the spathe. 



4. OTTELIA. Leaves crowded, the submerged narrow, the 

 floating long-petioled broader, flowers solitary sessile on a 

 tubular bifid spathe, stamens 6 to 15; ovary oblong, styles 

 6 bifid, fruit oblong 6-valved enclosed in the spathe. 



