4^ DIDYNAMIA. ANGIOSPERMIA. 



A small g^nus of 7 species, 3 of them indigenous to 

 northern and tropical America, 3 to the Cape of Good 

 Hope, and 1 to the East Indies. 



425. HERPESTIS. Gcerfner. Monniera. Mi- 



chaux. 



Calix 5-cleft, unequal, bibracteate at the base. 

 Corolla tubular, subbilabiate. Stamina inclu- 

 ded, all fertile. Capsule 2-valved, 2-ceileil, dis- 

 sepiment parallel to the valves. 



Small plants and mostly repent; peduncles axillary, 1- 

 flowered. 



Spectes. 1. H. rotimdifolia. 2. amplexicaulis. 3, 

 cnneifolia. 4. viicmntha. 5. *£roiv7iei. Around New- 

 Orleans. 



Chiefly an American genus of about 7 species, with 

 the exception of 1 in Africa and another in Java. 



496. *HEMIANTHUS. 



Cflto tubular, border 4-toothed, cleft on the 

 under side. Upper lip of the corolla obsoletef 

 lower 3-parted; intermediate segment ligulate 

 and truncate much longer, closely incurved. 

 Stamina 2,f filaments bifid, lateral stipes an- 

 therifcroiis. Style bifid. Capsule 1 -celled, £- 

 valved, many-seeded. Seeds ovate, even, and 

 shining. 



A very small creeping^ plant growing in marshes; leaves 

 entire, opposite and verticillate; flowers solitary, alternate 

 and pedicellate; minute. 



Species. 1. H. JVIicranthemoiiles. The only species 

 yet known Indigenous to the borders of the Delaware. 

 For a figure and further description, see the Journal of 

 the Academy of Natural Sciences of Philadelphia. I. p. 

 119. plate 6. fig. 2. 



f This f^enus ought to be referred to Diandria, but having 

 discovered it only during the progress of this work, I have 

 thought proper to introduce it here rather than in the JpPen- 

 ilhv. 



