84 INTRODUCTION TO BOTANY. 
RETICULUM. 
A fibrous sheath at the base of the leaves of the palmee. 
PERICLADIUM. 
A hollow part of the base of the leaves which surrounds 
the branches or peduncles. Umbelliferz. 
PHYLLODIUM. 
A greatly expanded petiole of compounded or deeply 
cut leaves, which assumes the appearance of a real leaf. 
Sunk leaves of the Alismaceze, Bupleurum, Batrachium. 
Some botanists call these, petiolaneous leaves, folia petio- 
lanea. 
SUPPORT. 
Stipes, Peridroma, Rachis. ‘The petiole of a fern, dif- 
fering from the proper petiole, as bearing the fructification 
as well as the leaf, or leaflets. 
STIPELLE. 
Stipella. A kind of stipule placed at the base of the 
leaflets on the common petiole. Phaseolus. 
HyPorpHyLuiuM. 
A small sheath, representing the true leaf, having 
branches at the axille similar to leaves. Asparagi. 
VAGINELLE. 
Vaginella. A small membranaceous sheath, embracing 
the base of bundles of leaves. Pinus, Larix. 
AURICLE. 
Auricula, Amphigaster. A kind of stipule accompanying 
the leaves of the jungermanniz. 
VESICLES. 
Fesicula. A hollow enclosed part, full of air, found on 
the leaves, Fuci; or in the petiole, Trapa natans. 
GoBLET. 
Ascidium, Vasculum. A kind of cup formed either by the 
leaf being rolled up and the edges soldered together, Sar- 
racenia; or by the concavity of the leaf itself, Cephalotus; 
or by a peculiar hollowing out of the extremity of the main 
rib, Nepenthes. 
