Trichomes morphology of the subfamily Heliotropioideae (Boraginaceae) representing by 18 species has been examined by light and
scanning microscope. Within the subfamily Heliotropoideae trichomes are generally eglandular rarely glandular as in Heliotropium
ophioglossum Boiss. Within the subfamily Heliotropoideae 1-celled unicellular and two celled uniseriate trichomes are observed.
Shape of the trichomes usually conical with pointed tips and distinct trichomes base. However, few species have indistinct trichome
base. The data is significantly useful at specific and generic level within the subfamily Heliotropioideae
Anjum Perveen . (2009) TRICHOMES MORPHOLOGY AS A TAXONOMIC MARKER IN THE SUBFAMILY HELIOTROPIOIDEAE (BORAGINACEAE) FROM PAKISTAN AND KASHMIR, , Volume 6, Issue 1 & 2.
