Anchor moss vs Taiwan moss

[Aqua Hero]

other than weeping moss i wanted to know which other moss has a 'down' growing affect. if that makes any sense

 

[zozo]

Willow moss seems to look a bit like that regarding some photo's i've seen. But i guess it does this when kept young and well trimmed.so it will brach. But seems to be a slow grower.
http://www.aquamoss.net/Willow-Moss/Willow-Moss.htm
Lately i received some longer and older grown fontinalis strains and this is more sturdy.. Nice looking moss no idea yet how it grows or what to do with it.