quote: (from Rob Clarke's Hashish book I think)
Thai
"Thai sativa leaves differ from those on most other sativa plants from other areas. The Thai sativa seems to grow the longest leaves in the world, more slender, more elegant, and with strongly accented serrations... Thai plants, which really do seem to be a particular species of cannabis sativa, easily grow to heights of 15 to 25 feet, competing closely with their Nepalese cousins..."
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from Rob Clarke's book "Marijuana Botany"
"Strains from Thailand are characterized by tall meandering growth of the main stalk and limbs and fairly extensive branching. The leaves are often very large with 9 to 11 long, slender, coarsely serrated leaflets arranged in a drooping hand like array. The Thai refer to them as "alligator tails" and the name is certainly appropriate..."
"The calyxes of Thai strains are very large, as are the seeds and other anatomical features, leading to the misconception that strains may be polyploid. No natural polyploidy has been discovered in any strains of Cannabis though no one has ever taken the time to look thoroughly. The seeds are very large, ovoid, slightly flattened, and light brown or tan in color. The perianth is never mottled or striped except at the base."
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In recent years all the so called "Thai" seeds from seedbanks (that I've personally seen) produce inferior short plants and have small calyxs and small mottled seeds. It is about fifteen years since I've seen what I would call true Thai. Big seeds with no mottling or stripes and giant leaf plants that grow twenty feet without any special attention. This was the most common Thai strain in the seventies! Also, big seeds = big calyxs. Simple botany 101. I've never seen big calyxs from small seeds.
There are a lot of different strains from Thailand though, according to locality. I'm just saying that the legendary Highland "farmed" Thai seems to be extinct even though it used to be the most common. There has always been a separate small seeded Thai line and most Thai from seedbanks seems to be variants of this strain. A very similar small seeded strain is common to Indonesia but it has a lot larger leaves than the common Thai and is probably more potent. Rumour has it that it is a pure Thai strain taken to Indonesia by the Mr Asia syndicate in the seventies. The seeds are black and unmarked.
Click to view attachment I cannot comment on the RSC "Highland Thai" as it is something new that I've never grown before. I have purchased some of the seeds though to do a test grow. If it is as interesting as the Pahari then it could be an excellent strain. Just not what I would personally call Highland Thai even though it is from the highlands of Thailand.
As a footnote, the seeds from most true (pure) landrace strains that I have ever seen were never mottled or striped. They were always a plain single colour of black, grey or brown. This new trend of "mottled" landrace seeds is not something I am familiar with.
scrubdog