Fig. 4.
The microtubule arrangements and structure of the chalazal endosperm haustorium of Utricularia minor. a, b Visualisation of the microtubules in the chalazal part of the endosperm proper and the haustorium; the chalazal part endosperm proper (epch), haustorium (Ch), haustorium nuclei (N), nucleolus (star), bar = 20 μm. c Visualisation of the chalazal endosperm haustorium using differential interference contrast; nucleolus (star), bar = 20 μm