The difference between Rosaceae and Amarathaceae are:
Rosaeae:
1. Systematic position : This family belongs to order rosales of sub : classpolypetalae of dicotyledonous.
2. Distribution : 3200 species under 115 genera widely distributed in temperate zone.
3. Habit : Mostly shrubs, many are trees and climbers perennial.
ADVERTISEMENTS:
4. Stem : Shruby often with spites woody or herbaceous and some are trailing.
5. Leaves : Simple or pinnately compound stipulate alternate.
6. Inflorescence : Solitary or grouped into coymose or racemose corymb showy.
7. Flower : Regular complete bisexual hypogenous or peignoirs or epigenous ebracteate, showy.
ADVERTISEMENTS:
8. Clalyx : Sepals five united adnate to receptacle, valvet.
9. Corolla : Petals five or numerous, pentamerous free inbricate large showy inserted in receptacular cup.
10. Androecium : Stamens many free commonly borne serval cycles of 5 on the rim of the rorus.
11. Gynoecium : Carpel one to five or mor efree or varioulsy unifed supperior some times inferior styles many as carpels ovules one or two in basal or many ovules in axile.
ADVERTISEMENTS:
12. Fruit : Variable drupe or pome of etario of drupes or folicles.
Amarantaceae:
1. Systematic position : This family belongs to series curvembryeae of subclass monodhalamydae of dicotyledonae.
2. Distribution : There are 800 species under 64 genera distributed in tropical zone.
3. Habit : Exclusively herbs, annual or perennials.
ADVERTISEMENTS:
4. Stem : Erect or subcadent and herbaceous.
5. Leaves : Simple soft estipulate alternate or opposite.
6. Inflorescence : Flower small in branched spike or receme borne in or simple or branched axis. Flowers intermingled with coloured bracts.
7. Flower : Small dry regular bracteolate bracteates bisexual hypogymous.
ADVERTISEMENTS:
8. Clalyx : Not distinct perianths present.
9. Corolla : Perianth with 3-5 lobes sepaloid often hairy sometimes persitent to cover the seed.
10. Androecium : Stemens usually five opposite to perianth lobe free or united at base, staminodes sometimes present.
11. Gynoecium : Carpels 2-3 syncarpus superior ovary single pendulus erect wvule in basal placentation.
ADVERTISEMENTS:
12. Fruit : Dry one seeded nut or a capsule seed endopermous.