Warren Stevens (Rojan) starred as Lt. "Doc" Ostrow in Forbidden Planet, which served as a major influence for the series.

Stewart Moss (Hanar) played a dramatically different character, Lt. Joe Tormolen, in "The Naked Time"

Scotty's line about the alcohol as "It's... green" will later be referenced in Star Trek: The Next Generation in the episode "Relics." In that episode Data states the line to Scotty.

Kirk: Rojan, there's no reason to do this by force. Let's take your problem to the Federation. Research expeditions have catalogued hundreds of uninhabited planets in this galaxy suitable for colonization.
Rojan: We do not colonize. We conquer. We rule. There's no other way for us.
McCoy: In other words, the galaxy isn't big enough for both of us.

Hanar: Tomar has examined the ship. The modifications are underway.
Rojan: Space again, Hanar. I do not think we could have kept our sanity living too long on this accursed planet.
Hanar: It is an undisciplined environment. One cannot control it. Yet there are things of interest.
Rojan: Yes, but disturbing. These shells in which we've encased ourselves, they have such heightened senses. To feel... to hear... to smell. How do humans manage to exist in these fragile cases?
Hanar: Since the ship was designed to sustain these forms, we have little choice.
Rojan: At least we'll be away from all of this openness. No, this is too strange for us, Hanar. We are creatures of outer space. Soon we will be safe in the comforting closeness of walls.

Kirk: What do you want from me now?
Rojan: We will beam aboard the vessel shortly. I wish you to understand your duties.
Kirk: My duty is to stop you in any way I can.
Rojan: You will obey.
Kirk: Or you'll kill more of my people.
Rojan: Captain Kirk, I cannot believe that you do not understand the importance of my mission. We Kelvans have a code of honor. Harsh, demanding. It calls for much from us and much from those whom we conquer. You have been conquered. I respect your devotion to your duty, but I cannot permit it to interfere with mine.

Kelinda: This business of love...you have devoted much literature to it. Why do you build such a mystique around a simple biological function?
Kirk: We enjoy it.
Kelinda: The literature?
Kirk: Kelinda, I'm sorry I brought up the whole subject.
Kelinda: Do you really regard this touching of the lips as pleasurable?
Kirk: I did.
Kelinda: Curious. Let me try.

(drinking)
Scotty: I found this on Ganyroom... uh, uh, Ganymeer... mede
Tomar: What is it?
Scotty: It's... uh... it's green.

(as they play 3-d chess)
Spock: Humans are very peculiar. I often find them unfathomable, but an interesting psychological study.
Rojan: Well, I do not understand this business of pressing with the lips to apologize.
Spock: I believe you're referring to a kiss. But it is my understanding that such apologies are usually exchanged between people who have some affection for each other.
Rojan: Kelinda has no affection for Captain Kirk.
Spock Your game is off. Are you disturbed by the incident?
Rojan: Why should I be disturbed?
Spock: You've known Kelinda for some time. She's a Kelvan as you are. Among humans, I've found the symptoms you're displaying usually indicate jealousy.
Rojan: I have no reason for such a reaction. Kelinda's a female, nothing more.
Spock: Captain Kirk seems to find her quite attractive.
Rojan: Well, of course she is!
Spock: You are not jealous?
Rojan: No!
Spock: Nor upset?
Rojan: Certainly not.
Spock: Checkmate.

McCoy: Well, now, let's see. You've had three shots. I think you better stay on them for a few days, and then we'll see how you're responding.
Hanar: I see no reason for you to refer to yourself in the plural.

Kelinda: This cultural mystique surrounding the biological function...
Kirk: Yes?
Kelinda: You realize humans are overly preoccupied with the subject.
Kirk: Yes. We do think a great deal about it.
Kelinda: I've done some supplemental reading on it, and, uh...
Kirk: You have a question?
Kelinda: Yes... uh... I was wondering, would you please apologize to me again?

Kelinda: Rojan has forbidden me to see you.
Kirk: Yes, that's too bad. Why do you defy him?
Kelinda: It's not a question of defiance. We were told to find out everything we could about you.
Kirk: Well, how's the research going?
Kelinda: I need some more experiments. (kisses him)

Rojan: Have you seen Captain Kirk?
Spock: If you wish, I shall call him to the bridge.
Rojan: No. I was wondering where he was.
Spock: I left him in the recreation room.
Rojan: He was alone then.
Spock: No, Kelinda was with him. She seemed anxious to speak to him.
Rojan: I told her to stay away from him.
Spock: It would appear, sir, that you have little control over her. Or perhaps... Captain Kirk has more.

Rojan: You did this to her, corrupted her, turned her away from me!
Kirk: If you can't keep her, that's not my problem.

Rojan: And you, you would wish to remain with him?
Kelinda: He's most interesting. But I wish to go with you. I believe I owe you an apology. Most pleasurable.
Rojan: Yes. Very curious.
Kirk: You see, Rojan, being human does have certain advantages. Being able to appreciate the beauty of a flower... or a woman.

Title

The title is taken from Shakespeare's Romeo and Juliet, Act 2, Scene 2. The complete line is "What's in a name? That which we call a rose by any other name would smell as sweet."

This is the only episode in which Scotty's quarters are seen.

Eminiar Seven ("A Taste of Armageddon") is mentioned by name, as is his ploy to plant a mental image in a guard.

What Changed in the Remastered Version
General improvements cited on the main series page. The orbital shots of the planet get a surface upgrade. A very large, extensive matte shot is created for the scene where the landing party beams down. There is also a remastered shot of the Enterprise heading toward the Andromeda galaxy as it passes through the void. The unnamed planet gets the usual surface upgrade, and the Galactic Barrier is shown with the improved effect seen previously in "Where No Man Has Gone Before." The paralyzation energy effect is also touched up.