4B 



Oti^ BUDS. 



It appears that no pel-ennial plants, bat those furnished with scaly 

 buds, can live in climates where it snows a part of the year. Trees 

 of the torrid zone, whose wood appears hard and firm, perish in our 

 latitude. In warm climates, the buds of the trees are without scales, 

 the tender shoots not requiring their protection. 



That there is, in reality, a difference in the constitution of vegeta- 

 bles, as well as animals, is very apparent; an orange-tree Will never 

 form scales to protect its buds from cold, any more than the most 

 delicate tropical animals can resist the rigours ol 

 a polar climate. There are cases, however, in 

 which both plants and animals change their 

 habits. The horse-chestnut, in India its native 

 climate, unfolds its leaves to the atmosphere, 

 without any check to their development ; in a 

 colder climate, the leaves in attempting to un- 

 fold, being checked in their progress, degene- 

 rate into scales, and form buds. 



Figure 32 shows a branch of the Buttonwood- 

 tree, (Plaianus,) in which the bud is formed 

 within the petiole of the preceding year ; thin 

 performs the office of the scaly covering in other 

 buds, a, the lower part of the petiole cut veiti^ 

 cally to show the cavity 6, in which is con* 

 tained the bud c. 



You are here (Fig. 33) shown a young branch of the Tulip-tree, 

 {■Liriodendruvi :) a a, scales Which covered the bud, now two stipules, 

 cauUne and oval ; b, part of the pe 

 tiole of the leaf; c, another envf* 

 lope of the bud, from which is d^ 

 tached the envelope d, in order t(^ 

 show the situation of the leaves e. 

 and the buds f. The buds /, art 

 each furnished with a scaly en- 

 velope like those seen at a, c, and d. 

 Monocotyledonous plants seldom 

 produce more than one bud an' 

 nually. On the summit of the pami 

 appears the bud, containing the 

 leaves and flowers ; from the centre 

 of this bud, a foot-stalk springs up 

 bearing the flower, while the leaves 

 spread out at its base. The follow- 

 ing year the old leaves decay, 

 forming by their indurated remains 

 a ring around the stipe of the palm, 

 and a new bud is formed upon its 

 summit as before. This bud of the 

 palm, from its form and size, is often 

 called the cabbage. 

 Some botanists enumerate four kinds of buds, the bidb, turion, huh 

 bille, and the proper bud. The two former we have considered under 

 tlie head of roots, and the third under the stem. 

 Of the proper bud, there are three sorts : 



Difference in the nature of vegetables— They sometimes change their habits ; es 

 ample, the horse-chestnut— Explain Fig. 32— Explain Fig. 3?- -Buds of the palm- 

 What four kinds of buds 7— Proper bud. 



