[R] boxplot, vertical position of x-axis labels

[Kay Cichini]

hello,

i can't figure out how to change the vertical position of my x axis labels..

boxplot(c(1:12)~c(rep("1",6),rep("2",6)),at=c(1,2),
col=c(0,"grey"),las=1,xaxt="n")

### i put paragraphs in the x-labels because of limited horizontal space

axis(1,at=c(1,2),adj=1,labels=c("Salix
Scrub","Tall
Forb"))

...the labels are one line above usual position and cross the tickmarks and
i don't know how to get around this.

can anyone help with this?
thanks in advance. 

kay
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