Racemose, bearing racemes, or raceme-like.
Rachis, see [rhachis].
Radial, belonging to the ray.
Radiate, or Radiant, furnished with ray-flowers, [94].
Radiate-veined, [52].
Radical, belonging to the root, or apparently coming from the root.
Radicant, rooting, taking root on or above the ground.
Radicels, little roots or rootlets.
Radicle, the stem part of the embryo, the lower end of which forms the root, [11], [127].
Rameal, belonging to a branch. Ramose, full of branches (rami).