236 THE STORY OF PLANT LIFE 
Quadrangular.—Square, of stems. 
Raceme.—An indefinite inflorescence with flowers borne on 
pedicels, centripetal. 
Racemose.—In a raceme, with stalked flowers. 
Rachis.—The central stem of an inflorescence. 
Radical.—Springing from the root. 
Radicle.—The root of an embryo, associated with the hypaettyl. 
Ray.—The ring of outer florets, or branch of an umbel. 
Rayed.—-Formed in a ray or ring. 
Receptacle.—A part bearing the flowers; the expansion of the 
apex of the peduncle. 
Recurved.—Bent back moderately. 
Reflexed.—Curved back considerably. 
Regular.—Uniform, symmetrical. 
Reniform.—Kidney-shaped. 
Reticulate.—Net-like. 
Retuse.—Blunt, with a central notch. 
Revolute.—Rolled back. 
Rhipidium.—A form of cyme. 
Rhizome.—An underground creeping stem. 
Rimose.—Cracked. 
Root.—That part distinct from the shoot, serving to attach the 
plant, and draw nutriment from the soil. 
Rootlet.—A secondary root, given off from a main root. 
Rootstock.—A rhizome, or tuber. 
Rotate.— Wheel-shaped. 
Rugose.—Rough, wrinkled. 
Runcinate.—With the lobes recurved towards the base. 
Runner.—A thin trailing branch, rooting at intervals as in the 
Strawberry. 
Sagittate.—Arrow-shaped. 
Samara.—A winged indehiscent fruit, as in Maple or the “ key” 
of the Ash. 
Scale.—Small rudimentary leaves. 
Scape.—A naked flower-stalk springing from the crown of a root. 
Scarious.—Membranous, dry, thin, not green, semi-transparent. 
Schizocarp.—A fruit with numerous carpels, which splits up into 
1-seeded portions. 
Secund.—All turned one way. 
