128 
In this study of the tendrils of the Passiflorze, the author 
takes Passiflora holosericea as a type and observes—lIst, a tendril 
it the axil of the leaf; 2nd, two floral pedicels 4 and c on either 
side of the tendril, but slightly behind it; 3rd, a leaf-bearing 
branch, and a situated between the tendril and the stem. Of all 
these organs the first to develop is the tendril, and when that 
has attained a certain size, a second bud appears in the angle of 
the tendril and the stem, which bud developes into the leaf 
bearing branch @ and after that are formed successively the 
buds 4 and ¢, one at the right and the other to the left of the 
base of the tendril. It is to be noted that neither of these three 
buds possesses an axillary leaf, or even a rudimentary one. 
The conclusions reached are that the tendril of the Passiflorz 
represents a modified axillary branch that can have at its base 
several secondary branches destitute of axillary leaves. The 
branch representing the first ramification is always developed, 
and produces either a branch with leaves which replaces the 
axillary branch transformed into a tendril, or a flora pedicel, 
either simple or branched. The other branches that are in the 
flowering portion of the plant become plural pedicels, or are 
only partly developed, or remain undeveloped. Av MON. 
Sulle foglie delle Piante acquatiche e specialmente sopra quelle del- 
la Nymphea e del Nuphar. Nota di G. Arcangeli. (Nuovo 
Giornale Bot. Ital. xxii. 441), 
In the above study on the structure of the leaves of Nymphea 
and Nuphar the terms tdrophylli, eridrophylli and erophylli are 
suggested to designate respectively the submersed, floating and 
rial leaves of aquatic plants. Under the group of zdrophylli 
Sig. Arcangeli proposes to unite all the leaves that present 
structures adapted to thrive totally under water as do the leaves 
of the Zosteracee, some Potamogeton, Vallisneria, Elodea, etc.; 
under that of eridrophylii all the forms that float on the wirtace 
of the water, as in Vymphea and Nuphar ; and under the name 
of zrophylli, those that grow above the surface of the water, as 
do the leaves of Sagittaria and Limnobium Spongia. 
A MV: 
Key to the Genera and Species of British Mosses. Rev. H. G. 
Jameson. (Journ. Bot. xxix., 33-45, plate 302). 
