149 



Hugo de Vries and Winkler (Comp. Penzig II, p. 257 and 258). 

 We give only a couple of instances. 



Pupalia spec. 

 Habitat Letti. 



Coll. October 1896, December 1897. 



I. Normal arrangement of the leaves in pairs at right angles. 

 Collected a stem with three alternate leaves betwet-n two 

 successive pairs, 



II. a) One pair, of which one leaf a little higher than the 



other one. 

 h) A whorl of three, one of them IG m.M. higher and 



without branchlet. 

 c) A whorl of three, at equal heights and all of them with 



lateral branchlets. 



All further whorls like c. 



III. a) One pair, of which one leaf with double apex. 



h) A whorl of three, one of these inserted higher up and 



without branchlet. 

 c) A whorl of three, at equal heights and with axillary buds. 



All the higher whorls as in c. 



IV. a) One pair, of which one somewhat higher. 



h) A whorl of three, of which one without axillary bud. 

 c, d and so on) Whorls of three, but the leaves not at 

 exactly equal heights. 



V. a) One pair normal. 



h) A whorl of three, of which one leaf springs lower; shoots 

 in all the axils. 



c) Whorl of three leaves, two at nearly the same height, 

 the third one 1 cM. higher, all of them with lateral shoots. 



d) Whorls of three, leaves inserted at almost the same heights. 

 The following whorls like d. 



The deviations described correspond fairly well with those of 

 Jasminum (p. 165). 



Ann. Jard. bot. Buitenz. 2e Smio, Vol. IV. 11 



