Part 119

Puberulent, minutely pubescent.

Pubescent, covered with hairs, usually soft and short.

Rachis, the axis (backbone) of a spike, or of a compound leaf.

Radiate, diverging from a common center, or bearing ray-flowers; said of flower-heads of composite plants.

Radical, belonging to or proceeding from the root, or from the base of the stem.

Ray, one of the radiating branches of an umbel; the marginal flowers, as distinct from those of the disk, in Compositae, etc.

Receptacle, a more or less expanded surface, forming a support for a cluster of organs (in a flower) or a cluster of flowers (in a head), etc.

Recurved, curved backward or downward.

Reflexed, abruptly bent or turned backward or downward.

Regular, symmetrical in form; uniform in shape or structure.

Retrorse, directed backward or downward.

Revolute, rolled backward from the margins or apex.

Rhomboidal, quadrangular, with the lateral angles obtuse.

Rudiment, an imperfectly developed and functionally useless organ.

Rugose, wrinkled; ridged.

Saccate, sac-shaped; baggy.

Sagittate, shaped like an arrowhead; triangular, with basal lobes prolonged downward.

Salver-form, narrowly tubular, with limb abruptly or flatly expanded.

Scabrous, rough to the touch.

Scape, a naked peduncle rising from the ground.

Scarious, thin, dry, membranaceous, and not green.

Scorpioid, incurved like the tail of a scorpion; said of an inflorescence.

Segment, one of the parts of a leaf or other organ that is cut or divided.

Serrate, having teeth directed forward, like the teeth of a saw.

Serrulate, minutely serrate.

Sessile, stemless.

Sinus, a recess or re-entering angle.

Sheathing, infolding like a sheath.