1) Dextral 2) Dextrorsal 
• (a.) Turning from the left to the right, in the ascending line, as in the spiral inclination of the stem of the common morning-glory.
turned to the right or spirally arranged to the right (compare sinistrorse)
Turning from the left to the right, in the ascending line, as in the spiral inclination of the stem of the common morning-glory. ... at present scientists predicate dextrorse or sinistrorse quality of the plant regarded objectively; formerly the plant was regarded subjectively, and what is now called dextrorse was then considered sinistrorse. ... O...
turned to the right or spirally arranged to the right (compare sinistrorse)
[adj] - (botany) spiraling upward from left to right
dextrorsal adjective spiraling upward from left to right; `dextrorse vines`
(of a climbing plant) rising helically from right to left, as seen from outside the helix (opposed to sinistrorse).