428 ARRANGEMENT OF THE GENERA 



ORDER LXIV. PLANT AGINE^:. 



Calyx four-parted, imbricate, persistent. Corolla regular, four- 

 parted. Stamens four. Ovary free, one-celled, or with, two or 

 four cells ; ovules one, two, or more ; style one. Capsule opening 

 transversely. 



1. Plantago, 96, 102. 2. Littorella, 343, 357. 



Section IV. MONOCHLAMYDE^B. 



Flowers incomplete, or having a single perianth) not distin- 

 guishable into calyx and corolla. 



Order LXV. AMARANTHACE.E. 



Perianth of from three to five segments, persistent. Stamens 

 from three to five, hypogynous. Ovary free, one-celled, with one 

 or several ovules ; style one or none ; stigma simple or compound. 

 Capsule one- celled ; seeds from a central placenta ; embryo curved 

 round a central farinaceous albumen. 



1. Amaranthus, 340, 360. 



Order LXVI. CHENOPODIACE^. 



Perianth generally five-parted, persistent. Stamens five, two, 

 or one, from the base of the perianth. Ovary free or adhering to 

 the tube of the perianth ; style divided, rarely one. Fruit inde- 

 hiscent, dry, membranous, sometimes fleshy. Seed with the em- 

 bryo spiral, or curved, or doubled, with or without albumen. 

 SALSOLE/E. SALICORNIE.K. 



1. Salsola, 112, 138. 4. Salicornia, 45,45. 



CHENOPODE. ATRIPLICE.S:. 



2. Chenopodium, 1 12, 136. 5. Atriplex, 384, 384. 



3. Beta, 111,138. 



Order LXVII. POLYGONE^E. 



Perianth with three, five, or six segments. Stamens varying in 

 number, from the base of the perianth. Ovary one, free, erect ; 

 styles and stigmas several. Fruit a nut or achenium, often trian- 

 gular. Seed one, with the embryo inverted in a farinaceous al- 

 bumen. 



1. Polygonum, 182, 188. 2. Rumex, 164, 176. 



3. Oxyria, 164, 176. 



Order LXVIII. ELEAGNE^. 



Mostly dioecious. Perianth tubular, four-parted. Stamens 

 three or more ; anthers two-celled. Fertile flower with the pe- 

 rianth tubular, two- or four-toothed ; ovary one-celled ; style 

 short, stigma glandular. Fruit crustaceous, enclosed within the 

 fleshy perianth. 



1. Hippophae, 367, 379. 



Order LXIX. THYMELE.E. 



Perianth tubular, four- or five-parted. Stamens four or five, 

 in the orifice of the tube ; anthers two-celled. Ovary free, one- 

 celled, with one pendulous ovule. Fruit a nut or drupe. 

 1. Daphne, 181, 187. 



