New PDF release: Chemical Plant Taxonomy

By T. Swain

ISBN-10: 0123955408

ISBN-13: 9780123955401

ISBN-10: 0323146244

ISBN-13: 9780323146241

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All k i n d s of u t i l i t a r i a n classification of p l a n t s a r e of t h i s n a t u r e , a n d so a r e all classifications b a s e d u p o n t h e a p p l i c a t i o n of p a r t i c u l a r biologi­ cal criteria, like ecological h a b i t , cytological c h a r a c t e r i s t i c s , a n d i n t e r fertility a n d i n t e r s t e r i l i t y . T h r e e f e a t u r e s of artificial classification in a p p l i c a t i o n t o o r g a n i s m s a r e of p a r t i c u l a r i m p o r t a n c e : (i) S y s t e m s b a s e d u p o n a single criterion, w h a t e v e r it m i g h t be, c a n n o t b e e x p e c t e d necessarily t o a c c o r d w i t h t h e n a t u r a l classification of t h e g r o u p u n d e r t r e a t m e n t .

Leiden 9 , 7 5 . D . P . Y o u n g ( 1 9 5 3 ) . Bot. Ν otiser, 1 9 5 3 , 2 5 3 . CHAPTER 3 History of Chemical Taxonomy R. D A R N L E Y GIBBS McGill University, Montreal, Canada CONTENTS I. Introduction II. The B e g III. The Modern P . i n i . n o . i n n e . g e s r . . s . . . . . . . . 42 . . . 46 I V . T h e U s e of C e r t a i n C h e m i c a l C r i t e r i a in P l a n t T a x o n o m y A. B. C. D. E. F. G. H. Raphides . . . . C r y s t a l s of C a l c i u m O x a l a t e o t h e r t h a n R a p h i d e s Lapachol .

H e r e h e h a s m a n y p o i n t s of i n t e r e s t t o u s . O n p . 15 h e r e m a r k s on t h e r e l a t i v e c o n s t a n c y of c o m p o s i t i o n of p l a n t s w h e n g r o w n o n different soils: "C'est un phenomene continuellement present a notre examen, que d e voir diverse p l a n t e s nees d a n s u n sol p a r f a i t e m e n t semblable, p r o d u i r e des m a t i e r e s tres-differentes, t a n d i s q u e des v e g e t a u x analogues, nees d a n s les sols differens, y f o r m e n t des p r o d u i t s s e m b l a b l e s .

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Chemical Plant Taxonomy by T. Swain


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