[ noun ] any of various plants of the genus Sedum <noun.plant>
Sedum \Se"dum\, n. [NL., fr. L. sedere to sit; so called in allusion to the manner in which the plants attach themselves to rocks and walls.] (Bot.) A genus of plants, mostly perennial, having succulent leaves and cymose flowers; orpine; stonecrop. --Gray.
In fact, there is just one smoke signal I telex west these days: Sendum sedum.