Some interesting details there...
Where did you see this was the national plant of Namibia? The plant that tends to show up on their national coat of arms (plus a couple of local ones) and the currency is Welwitschia
http://www.gov.na/national-sym...
http://www.orusovo.com/symbols...
http://www.info-namibia.com/ac...
The only aloe I've heard of being used as an official symbol in Namibia is Aloe littoralis (coat of arms for Windhoek) which appeared in addition to Welwitschia on the 5 cent coin.
http://currencies.wikia.com/wi...
This is all highly random, I realize, but now I'm curious about where the quiver aloe shows up as a national plant. It certainly is a most striking aloe.
*edit: Now that I've looked more carefully at the rest of the money, I can see the quiver aloe on a different coin (along with Welwitschia). Cool!
Another random factoid: this plant was on the money.
http://currencies.wikia.com/wi...