244 



BOTANY FOR BEGINNERS 



CHAP. 



Sub- Class .... Calyciflorae. 



Natural Order. 



(a) Leguminosae 



Rosacese . 



(c) Umbelliferae 



Distinguishing Characteristics. 



(i) Flowers zygomorphic (p. 179). 

 (ii) Stamens 10, either monadelphous or dia- 

 delphous (p. 185). 



(iii) Pistil monocarpous (p. 186). 



(i) Flowers actinomorphic (p. 179). 



(ii) Stamens indefinite, perigynous (p. 185). 



(iii) Pistil apocarpous (p. 186) or monocarpous. 



(i) Flowers in compound umbels (p. 168). 

 (ii) Stamens 5, epigynous (p. 185). 

 (iii) Pistil. 



Sub- Class .... Gamopetalae. 

 Natural Order. Distinguishing Characteristics. 



(a) Compositae. . . 



(b] Primulaceae . 



(c ) Boraginese . 



(d) Scrophularineae. 



(e) Labiatse . . 



(i) Flowers in heads, 

 (ii) Stamens 5, syngenesious (p. 185). 

 (iii) Pistil syncarpous, carpels 2 ; ovary one- 

 celled, and stigma 2-fid. 



(i) Flowers actinomorphic. 



(ii) Stamens 5, opposite to corolla lobes. 



(iii) Pistils syncarpous, carpels 5. 



(iv. ) Placentation, free central (p. 187). 



(i) Leaves entire and hairy, 

 (ii) Flowers rotate and actinomorphic. 

 (iii) Stamens 5, alternating with corolla lobes, 

 (iv) Pistil syncarpous, carpels 2 ; ovary four- 

 celled, style gynobasic (p. 186). 



(i) Stem round, 

 (ii) Flowers zygomorphic. 

 (iii) Stamens 4, didynamous (p. 185). 

 (iv) Pistil syncarpous, carpels 2 ; ovary two- 

 celled, ovules numerous, axile placentation (p. 187). 



(i) Stem square, leaves opposite, 

 (ii) Flowers two-lipped, zygomorphic. 

 (iii) Stamens 4, didynamous. 

 (iv) Pistil syncarpous, carpels 2 ; ovary four- 

 Jobed and four-celled, with one ovule in each cell. 



