423 
dromic (the peculiar habit of Gnetaceae obscures the evidence with 
them). Of still greater interest were the coal-plants and the mod- 
ern tree-ferns. In the South Kensington Museum of Natural 
History I found Lepidodendron Sternbergit and Sigillaria tesselata 
clearly antidromic, the leaf scars forming different spirals, and sin- 
istrorse and dextrorse specimens of each being seen. Of the fruits 
of Palacoxyris carbonaria some were twisted in one way, some in 
the other way. The fact that some of the fossils have regularly 
bilateral markings received a curious illustration from the tree- 
ferns. We have in Princeton a piece of fern-stem (an A/sophila) 
with its scars absolutely symmetrical. But in Kew Gardens Mu- 
scum and in one of the greenhouses in Paris I saw tree ferns 
(Cyathea Schauschii Mart. and Alsophila Brunoniana Wall.) hav- 
ing about 10 feet of the lower part antidromic, that is dextrorse 
and sinistrorse in different plants, and the upper part of the same 
stems closely beset with symmetrically placed scars. This shows 
how the primitive antidromy may become exhausted, and may 
disappear, or even as in A&sculus, may be overlaid by a different 
kind of spirality subsequently acquired. 
I should add that Herr Otto Mueller of the University Gardens 
of Strassburg informed me that he has often observed the duplex 
Order of phyllotaxy, though he had never seen any reference to 
this in print. 
PRINCETON, September 29, 1896. 
Botanical Notes. 
Coleosporium Campanulae (Pers.) Winter. While visiting at 
Earlville, Madison county, N. Y., the present summer, I found the 
common Campanula vrapunculoides everywhere covered with this 
fungus, which does not seem to have been reported from this coun- 
try, although it is common in Europe on this and other members 
of the Campanulaceae. Subsequently Mr. F. L. Stevens has sent 
me some of the same fungus collected at Jamesville, Onondaga 
county, N. Y. It is likely to be found elsewhere as soon as at- 
tention is called to it. L. M. UNDERWooD. 
