• MEDICAL BOTANY, 



A BOTANICAL DESCRIPTION OF PLANTS USED 

 IN MEDICINE. 



CONSPECTUS OF NATURAL ORDERS CONTAINING MEDICINAL 



PLANTS. 



Series I. — Phaenogamous or Flowering Plants. 



Plants furnished with flowers and producing seeds. Structure of the stem 

 exogynous. Embryo with two or more cotyledons. Leaves usually netted- 

 veined. 



Class I.— Exogens or Dicotyledonous Plants. 



Stem with a distinct pith and bark, between which are layers of woody 

 fibre and vessels ; the increase in size by the deposition of new layers beneath 

 the bark, forming concentric zones and traversed by rays. Leaves usually 

 articulated with the branches, and having diverging and reticulated veins. 

 Seeds in a pericarp. Embryo with two cotyledons. 



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Sub-Class I.— Polypetalous Exogenous Plants* 



Floral envelopes, consisting of both calyx and corolla ; the petals being 

 distinct. 



Group I. — Polycarpicales. 



Ovaries several or numerous, distinct ; when in several rows sometimes 

 coherent, but not united into a compound pistil. Stamens and petals inserted 

 on the receptacle. 



Order 1. — Ranunculaceje. — Carpels distinct. Stipules 0. Corolla im- 

 bricated. Albumen homogeneous. Seeds exarillate. 



Order 2. — Magnoliace^e. — Carpels distinct. Stipules large; convolute. 

 Corolla imbricated. Albumen homogeneous. 



Order 3. — Anon ace*:. — Carpels distinct. Stipules 0. Corolla valvate. 

 Albumen ruminate. 



Group II. — Menispermales. 



Ovaries several, disunited. Flowers diclinous. Stamens few or definite. 

 Pistils few or solitary. Embryo surrounded by an abundant albumen. 



