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132 MISSOURI BOTANICAL GARDEN, 
division for a greater or less distance or the more or less 
complete fusion of two original primordia has been observed 
in Musa Ensete by Meyran,* in Tulipa Glesneriana by 
Lange,f in Ophrys aranifera by Saint-Pierre t in Orchis 
maculata by Clos,§ in Strelitzia Reginae by Massalongo, | 
in Richardia aethiopica, Colocasia undulata, Lolium per- 
enne and Potamogeton plantagineus by Braun and_per- 
haps other cases from the teratolgical literature might 
be referred to these categories. I have seen the same 
phenomenon in a specimen of Agave sp. growing in the 
Missouri Botanical Gardens and in the herbarium isa leaf of 
A, picta showing the same anomaly. While such divided 
leaves may not be described as intermediate between the 
normally developed leaf and the tubiform ascidia — which 
have as yet been observed only in the Monocotyledons — it 
seems possible that there is some similarity in their mode of 
development. 
* Meyran, O. Bull. Soc. Bot. Lyon. II. 8 ¢ 123-124. 1885. 
+ Lange. Bot. Tids. 7: 209. 1873-74. 
. } Saint-Pierre, G. Bull. Soc. Bot. Fr. 23 ; xxxvi-xl. 1876. 
§ Clos, D. Bull. Soc. Bot. Fr. 36 ccx. 1889. 
|| Massalongo, C. Nuovo Giorn. Bot. Ital. 203 283. pl. 76. 1888. 
{ Braun, A. Sitzb. Ges. Naturf. Freunde, Berlin. 1871: 7. 
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