Really? You say that because the plant does not have any trichomes as of when the picture was taken and Duckfoot said there were no trichomes even though the plant is already flowering that that is "irrelevant?" Are you absolutely positive about that?
Things like you have been writing is why I so often say that growers should really consider taking some botanical courses so they can actually learn some facts rather than only relying on what they believe things to be.
Read the information below and keep your eye out for the few places that are underlined and bold. I chose the most simplistic to understand information in hopes that you, and others, will be able to understand it and then stop filling peoples heads with malarkey.
The information is not specifically about cannabis plants but that, unlike what you incorrectly claimed to be irrelevant, is actually irrelevant. For some inexplicable reason many growers refuse to accept that many botanical facts are equally accurate and applicable in regards to many or most plants, including of course cannabis, and instead seem to like to believe that cannabis is somehow outside the realm of botanical facts, that they do not equally apply to cannabis plants when they absolutely do equally apply to cannabis.
That is the reason why I often hear some of the lyrics of an OLD Bachman - Turner, Ovedrive song, "You Ain't Seen Nothing Yet" running through my head while reading messages like you write. It goes; "B-B-B-Baby, you know, you know, you know, you just ain't seen nothin' yet. You need an education, got to go to school."
That is my advice to you.
Land of the Glandular Trichomes
A brief glimpse into the microscopic world of the Lamiaceae
Trichomes are specialized epidermal cells present in most plants. Glandular trichomes contain volatile oils and other secretions that are produced by the plants. In the Lamiaceae (Mint Family), there are two types of trichomes commonly found on leaves and stems: peltate and capitate.
An example of a capitate trichome from
Ocimum ssp. (Lemon Basil) is shown here:
Note the obvious globular head, which can be made up of one or more cells. The head is attached to the epidermal surface by several elongated stalk cells. Essential oils build up in the head cells. Before secretions reach the outside, the head cells may release materials into a subcuticular space, which forms when the cuticle detaches from the top (apical) walls of the secretory head (Handilou et al., 1991).
An example of a peltate trichome, from the same
Ocimum plant is shown here:
The stalk on the peltate trichome is very short and is actually sunk down into the epidermis. Peltate trichomes can have heads made up of dozens of cells.
All trichomes develop very early in the life of the leaf. First, a protodermal cell, prior to division, undergoes reorganization, with the nucleus migrating towards the upper (apical) end of the cell, and the bottom of the cell filling with large vacuoles. The cell then divides asymmetrically and periclinally. The lower, vacuolated cell becomes the foot cell (or cells), while the top cell undergoes another periclinal division. The bottom cell of the second division is committed to stalk cell formation, while the top cell differentiates to form the head cell or cells (Karousou et al., 1992). The head undergoes additional anticlinal divisions as necessary, depending on whether the trichome is capitate or peltate and contains numerous cells (Ascensão et al., 1995).
Since trichomes develop so early, the number of trichomes per square unit of leaf is dependent on the expansion of the leaf's epidermis, i.e. the growth of the leaf. The following photo shows the close proximity of glandular trichomes on a very young leaf of
Rosmarinus officinalis (Rosemary):
Here is a photo of an epidermal peel from the abaxial surface (underside) of a leaf from
Coleus:
Note that the distribution of glandular trichomes is more widely spaced and appears to be even. The pointed structures in the bottom half of the photo are non-glandular trichomes.
References
Ascensão, L., N. Marques and M.S. Pais. 1995. Glandular trichomes on vegetative and reproductive organs of Leonotis leonurus (Lamiaceae). Annals of Botany 75: 619-626. Handilou, E., S. Kokkini, A.M. Bosabalidis and J.-M. Bessière. 1991. Glandular trichomes and essential oil constituents of Calaminta menthifolia (Lamiaceae). Plant Systematics and Evolution 177: 17-26.
Karousou, R., A.M. Bosabalidis and S. Kokkini. 1992. Sideritis syriaca ssp. syriaca: glandular trichome structure and development in relation to systematics. Nordic Journal of Botany 12(1): 31-37.