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MUSCI ARCHIPELAQI INDICI. 
(Prepared and Distributed by Max Fleischer.) 
The seventh series of these very interesting mosses have been recently 
received, including numbers 300-350. They are accompanied by a printed 
index and each label bears the date of issue as well as of collection ! They 
include mosses from Java, West Java and Ceylon, with a few from Borneo, 
Malacca and Singapore. The specimens are abundant and well prepared, 
the labels models of typography. Of one rare species, Ephemeropsis Tjibo- 
densis, large leaves, covered with this species have been distributed. Many 
of the genera are familiar, but the species are almost all different. There 
are some new species and many new combinations in these exsiccatse. 
New York Botanical Garden. E. G. Britton. 
A CORRECTION. 
Hypnum eugyrium var. viridimontanum , published in the May Bryol- 
ogist, appears to be Raphidostegium Marylandicuzn (C. M.) J. & S. This 
was discovered some time before The Bryologist was printed, but through 
a misunderstanding was not corrected. A. J. G. 
LICHENOLOGY FOR BEGINNERS —II. 
Frederick LeRoy Sargent. 
(Begun in May 1905, issue.) 
Among the first specimens a student is likely to collect there will almost 
surely be found examples of the species known as Parmelia conspersa, 
which grows most plentifully on stone walls and rocks in pasture land. Its 
general form is shown in Fig 1. The upper surface is pale greenish or 
straw colbr, becoming darkened with age ; the under surface is dark 
brown or black. Upon the upper 
side there are almost always to be 
found a number of chestnut-col- 
ored saucer-shaped fruits. This 
Parmelia will answer as a typical 
example from which we may gain 
a good idea of the essential parts 
of a lichen and their general struc- 
ture, after which we may more 
profitably consider the various 
modifications of these parts which 
appear in other members of the 
group. 
A cursory examination of our 
plant shows it to be a mat-like, 
much-lobed expansion, upon which 
are borne the conspicuous fruits. 
The latter are called apothecia 
(Ap., Fig. 2); the main part of the 
'Fig. 1. 
Parmelia conspersa. Natural size. 
(After Rabenhorst.)’ 
