898] PYROLA APHYLLA: A MORPHOLOGICAL STUDY 253 
mature specimens for the purpose of examining the rhizomes. 
These seedlings, one of which is figured (fig. 5), showed then a 
lng hypocotyl (#7 in the figure), two normal green cotyledons 
Cot.) which were almost sessile, the blade oblong or approxim- 
ately obovate. The first two leaves, succeeding the cotyledons, 
had a distinct petiole and an oblong blade, while the third 
showed the first traces of dentation and represented a tridentate 
leaf. The main root (R) was long, slightly branched, and 
‘overed with root-hairs; one pair of secondary roots (7) were 
developed just above the main one, but in no other place were 
such secondary roots observed upon these minute seedlings. 
Although Chimaphila umbellata is not uncommon in the vicinity 
of Washington, we have not yet been able to detect its seedlings, 
but it is not likely that they differ from those of C. maculata, as 
the manner of growth of these species is exactly the same. The 
‘eeies of Pyrola and Moneses demonstrate, on the contrary, a 
‘mewhat different mode of growth, which perhaps may be 
"sible at the earliest stages of their development during ger- 
Mination, 
WASHINGTON, DD. G, 
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— or, P.:  Prodromus systematis naturalis regni vegetabilis. 
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a 
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