Pinnate
 1. resembling a feather, as in construction or arrangement; having parts arranged on each side of a common axis: a pinnate branch; pinnate trees. 
2. Botany. (of a leaf) having leaflets or primary divisions arranged on each side of a common stalk.

Prickle     -led, -ling
–noun 1. a sharp point. 
2. a small, pointed process growing from the bark of a plant.

Raceme 
An inflorescence having stalked flowers arranged singly along an elongated unbranched axis, as in the lily of the valley.

Resinous 
 1. full of or containing resin

Rhizome
A horizontal, usually underground stem that often sends out roots and shoots from its nodes. Also called rootstalk, rootstock.

Sessile 
 1. Botany. attached by the base, or without any distinct projecting support, as a leaf issuing directly from the stem.