MISSOURI BOTANICAL 
GEORGE ENGELMANN 
GARDEN 
PAPERS 
240 
Scientific r* intelligence. 
devoted to a consideration of the modes of attachment of dif¬ 
ferent spehies of Loranthacece to the foster plant. This is accom¬ 
plished by the growth inward of suckers ( Saugfortsiltze ) which 
penetrate through the bark to the wood. The shape which any 
sucker assumes depends on the relative activity of the growth of 
the sucker itself and of the cambium. In some cases, as Lor- 
anthus Europceus and L. Sternbergianus , the sucker sends out 
processes which penetrate into the wood itself. The writer con¬ 
firms the suggestion made by John Scott that the vascular bundles 
of the parasites communicate with those of the plants on whic|r \ 
they are growing. 
Part II is devoted to the vegetative organs of the Rafflesiacece , 
which had previously been studied only in Pilostyles Hauss- 
knechtii Boiss. and Gytinus Hypocistus L. The writer gives the 
results of his examinations of Pilostyles JEthiopica Hook., P. Blan- 
chetii Gardn., and P. Caulotreti Karst., which closely resemble 
one another. The vegetable organs of these species consists of 
threads or, at times, flat expansions which are found in the last 
and from which suckers are given off which penetrate into the 
wood. The name given to the thread-like expansions is thallus, 
from its resemblance to the structures of the same name in crypto¬ 
gams. The flower buds are produced as adventitious offshoots 
from the threads of the thallus, and finally burst through the bark 
of the foster-plant. Pilostyles Thurberi A. Gray, a plant of our own 
country which is parasitic on species of Dalea , differs somewhat 
from other species of the genus. Its thallus, which is found in the 
inner bark, is not composed of threads but of flat expansions of 
considerable size. They are at first destitute of vessels, which, 
however, make their appearance about the time of the formation 
of the flower buds. Part III is devoted to the vegetative organs 
of the Balanophorece , and the writer concludes as follows: “ It is 
the object of the present essay to call attention to the fundamental 
uniformity of the development and conformation of the assimilat¬ 
ing organs of the phanerogamic parasites. This object has been 
attained if we have been successful in showing that they all have 
a common characteristic in the absence of any sort of differentia¬ 
tion of organs of vegetation such as we find in the Gormophytes , 
that their organs can be neither roots nor stems, but that we are 
compelled to recognize them as thalline structures equivalent and 
completely analogous to those of the Thallophytes. This would 
have pleased Lindley, as indicating a structural foundation for his 
class of Bhizogens. w. g. f. 
10. The Movements and Habits of Glimbing Plants ; by 
Charles Darwin, M.A, F.R.S,, etc. *2d ed., revised, with illus¬ 
trations. 208 pp. 8vo.—This work by Darwin, noticed at page 
69 of this volume, has recently been republished by D. Appleton 
& Co., New York. 
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Missouri 
Botanical 
Garden 
