decumbent
adjective
de·cum·bent di-ˈkəm-bənt 
dē-
1
: lying down
2
of a plant : reclining on the ground but with ascending apex or extremity
Word History
Etymology
Latin decumbent-, decumbens, present participle of decumbere to lie down, from de- + -cumbere to lie down; akin to Latin cubare to lie
First Known Use
1656, in the meaning defined at sense 1