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Alphabet said Wednesday that it's banning pot-related transactions over the Google Play app store.

Residents of states such as Massachusetts can stroll down to their local pot shop to get marijuana products, but they won't be able to arrange their buy over Google.

Alphabet (GOOG - Get Report) (GOOGL - Get Report) said Wednesday that it's banning pot-related transactions over the Google Play app store.

"We don't allow apps that facilitate the sale of marijuana or marijuana products, regardless of legality," says the company on its Google Play page of restricted content.

That puts pot along side pornography, bullying, hate speech, tobacco and other items the app store deems  too taboo, harmful to children or otherwise unacceptable.

Users will be barred from ordering marijuana through in-app shopping carts and apps will be banned from assisting users in arranging delivery or pick up of the drug and helping in the sale of THC-containing products. THC -- also known as tetrahydrocannabinol -- is the part of marijuana that produces a high. Cannabidiol, a non-psychoactive oil that is increasingly used in products and supplements, is not mentioned on the ban.

While many states allow some limited use of marijuana, especially for medical purposes, the U.S. Drug Enforcement Administration still classifies cannabis as a Schedule 1 drug, alongside heroin and LSD.

Among notable cannabis stocks, two rose while thirteen fell Wednesday.

Shares of cbdMD   (YCBD) rose 13 cents, or 2.11%, to $6.29.

Canopy Growth shares (CGC - Get Report) fell $2.16, or 4.84%, to $42.48.

Among cannabis ETFs the Alternative Harvest ETF (MJ - Get Report) fell 79 cents, or 2.38%, to $32.44.

The AdvisorShares Pure Cannabis ETF (YOLO) fell 44.21 cents, or 1.78%, to $24.36.

The Horizons Marijuana Life Sciences ETF (HMLSF) fell 39.24 cents, or 2.64%, to $14.47.

Large cap stocks with notable cannabis initiatives were mixed.

Shares of Altria Group Inc (MO - Get Report) rose 32 cents, or 0.64%, to $50.19. The tobacco company holds a $1.8 billion stake in Cronos Group.

Shares of Molson Coors Brewing Company Class B (TAP - Get Report) fell $1.78, or 3.11%, to $55.46. The company is working to develop beers infused with cannabis for the Canadian market.

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