Each bicellular microhair is composed of a basal cell and a cap cell, attached to or embedded in the leaf epidermis (Levering & Thomson, 1971; Oross & Thomson, 1982a; Naidoo & Naidoo, 1998; Somaru et al.
Bicellular trichomes of johnsongrass (Sorghum halepense) leaves morphology, histochemistry and function.
A short severe heat shock is required to induce embryogenesis in late bicellular
pollen of Brassica napus L.
There is an exception concerning amyloplast formation during the bicellular
stage of some grasses, such as Sorghum bicolor, in which the plastids next to the tapetum accumulate starch before those that are far from the tapetum do (Christensen & Homer, 1974).
In all five of these genera, the species for which character scores are available have membranous, nonciliate ligules; absence of bicellular
microhairs (except possibly Duthiea; see Watson & Dallwitz, 1992); two or three lodicules that are lanceolate, unlobed, and non- or weakly vascularized (including Duthiea, pers.
Development of bicellular
foliar secretory cavities in white snakeroot, Eupatorium rugosum (Asteraceae).