Glossary of Rose Terms

AARS: All American Rose Selection

Blade: the broad part of a leaf

Bract: a modified or reduced leaf that occurs beneath and next to a peduncle

Bud union: the swollen part of the stem where the scion of a grafted rose meets the understock

Calyx: the protective cover of a rose flower, composed o the sepals

Cane: one of the main stems of a rose plant

Corolla: the petals of a rose flower considered as a single unit

Cultivar: a named rose variety exhibiting distinct and consistent features, indicated by single quotation marks

Hip: the fruit of a rose Inflorescence: the flowering part of a plant; a rose inflorescence may bear single or multiple flowers

Leaflet: the individual segment of a compound rose leaf

Node: the point on a stem from which leaves and buds emerge

Old rose: strictly speaking, a rose introduced before 1867, but more loosely used to describe any rose grown or introduced before 1900 Once-blooming: a rose that flowers only once in early summer and does not repeat

Own root: a rose propagated as a cutting rather than by grafting

Peduncle: a stalk that supports a single flower or flower cluster Petal: the showy, usually colored part of a flower

Petiole: the stalk by which a leaf attaches to a stem; also leafstalk

Pistil: the female reproductive organ of a flower, consisting of an ovary, style, and stigma

Prickle: the technical term for a rose thorn

Remontant: blooming more than once a season; also recurrent

Rootstock: the root portion of a plant onto which the scion is grafted; also understock

Scion: a shoot grafted onto a rootstock; the "top" of a grafted rose

Sepal: one of the five individual, leaflike divisions of the calyx

Sport: a spontaneous genetic mutation, often resulting in a plant that bears flowers of a different color or with more or fewer petals than the original plant

Stamen: the male reproductive organ of a flower, consisting of a filament and anther

Stipule: a small, leaflike appendage that occurs at the base of the petiole

Sucker: a stem, usually unwanted, that originates from a rootstock

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