THE STRUCTURE AND DEVELOPMENT OF THE GLANDULAR TRICHOMES OF TEUCRIUM-MONTANUM (LAMIACEAE)

Four distinct types of glandular and nonglandular (clothing) trichomes were studied by light and scanning electron microscopy in different p lant parts of Teucrium montanum L. (sect. Polium (MILL.) SCHREB.). Pel tate glandular trichomes, which are composed of one basal cell, one st alk cell and four-to eight-cellular glandular head; short capitate gla ndular trichomes with unicellular basal and stalk cell and bicellular head; long capitate glandular trichomes with one or two basal cells, o ne to four stalk cells and one head cell; clothing nonglandular tricho mes composed of one to six cells and of uni- or bicellular foot (basal cell). The ontogeny of glandular trichomes is described. Qualitative differentiation of glandular trichomes (presence or absence of distinc t types on various plant parts) among three subspecies of Teucrium mon tanum have not been found.