Open AccessDevelopment, structure and senescence of colleters in Gardenia lucida Roxb. (Rubiaceae)
Author(s) -
Yash Dave,
P. M. Kuriachen,
Vinoth Thomas
Publication year - 2014
Publication title -
acta societatis botanicorum poloniae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 29
eISSN - 2083-9480
pISSN - 0001-6977
DOI - 10.5586/asbp.1988.001
Subject(s) - stipule , calyx , rubiaceae , botany , biology , gardenia , epidermis (zoology) , trichome , anatomy , medicine , pathology , alternative medicine , traditional chinese medicine
Colleters are found on the adaxial basal part of the stipule and calyx of Gardenia lucida. They secrete a yellow transparent resinous substance commonly known as "Dikamali gum". They develop on both the stipule and calyx from a group of epidermal and hypodermal initials. A mature colleter consists of a central core of elongated parenchymatous cells surrounded by a palisade-like secretory epidermis. Druses type crystals of calcium oxalate are frequent in the colleters. At the time of senescence the central cells show lignification and the presence of tannin