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INTRODUCTION TO BOTANY. 
Reticulum. 
A fibrous sheath at the base of the leaves of the palmae. 
t Pericladium. 
A hollow part of the base of the leaves which surrounds 
the branches or peduncles. Umbelliferae. 
Phyllodium. 
A greatly expanded petiole of compounded or deeply 
cut leaves, which assumes the appearance of a real leaf. 
Sunk leaves of the Alismaceae, 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. 
Hypophyllium. 
A small sheath, representing the true leaf, having 
branches at the axilla 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 jungermanniae. 
Vesicles. 
Vesicula. 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. 
