Glossary of Terms
- Two or more colors which gradually merge but are
distinguishable from a distance of six feet.
- CENTRAL RAYS
- The short immature ray florets comprising the central
portion of the fully double flowers when at their prime
- A more or less flat, circular group of tubular florets
fully visible in open-centered type Dahlias.
- DISC FLORETS
- Small tubular florets which make up the central part of the
flower head, each with a pistil and stamens but generally no
other conspicuous flower parts.
- Dahlia varieties which normally do not produce plant growth
over 24 inches in height.
- One of the small flowers which collectively comprise the
- FULLY DOUBLE
- Flower heads with multiple rows of ray florets; the disc
florets are immature and completely covered by the central rays
when the flower is at its prime stage.
- The ray florets curve forward along their length toward the
face of the flower head.
- Margins of the ray florets roll forward along their
longitudinal axis. When fully involute the margins touch or
overlap so only the revers of the floret is visible.
- The split or fimbriation should be in proportion to ray
floret length, and be no less than 1/6 of ray floret length,
there should be a twisting in the area of the split involute or
revolute ray florets, to give an overall fringed effect.
- The edge of the ray floret and the area adjacent.
- MARGINAL RAYS
- Fully developed ray florets which establish and determine
the maximum diameter of a flower, as distinguished from the
immature central rays.
- The common name for the conspicuously colored part of a
- Additonal floral parts on ray florets having the form and
appearance of smaller petals. Most noticable in the Collarette
- RAY FLORET
- One of the broad, conspicuously colored florets, the
structure of which suggests a single petal of an ordinary
flower. These form the radiating border in the open-centered
type dahlias, or massed together, the flower head in fully
- The ray florets curve backward along their length toward
- Margins of the ray floret roll backward allong their
longitudinal axis. When fully revolute, the margins touch or
- The ray florets have little or no curvature throughout
A Dahlia will be considered disseminated when it is offered
for sale by the originator and/or introducer through catalog,
advertisement, and/or any other means. A Dahlia will also be
considered disseminated when the originator distributes roots
or cuttings of an undisseminated cultivar to growers without
the stipulation of growing for seedling becnh competition and
they are entered, named, in show competion.
A Dahlia will also be considered disseminated the next
year following entry/placement in any ADS Trial Garden or ADS
Bench Evaluation when those trial garden/bench scores are
published in the ADS Bulletin.
Example: A seedling is entered in a trial garden or
seedling bench evaluation and scores 86.2. The inforamtion is
publsihed in the December 1995 issue of the ADS Bulletin.
This cultivar will be considered disseminated in 1996.
Exception: A cultivar may be entered the following year into
additional trial gardens or bench evaluatons. If not
released, the December 1995 issue of the ADS Bulletin MUST
state "not for release in 1996". In this case, the cultivar
will be considered disseminated in 1997.
An originator may send roots/cuttings of a seedling to ADS
Accredited or Senior Judges for the primary purpose of
growing for entry into ADS Seedling Bench Evaluation and
still be considered undisseminated. Any information published
in the ADS Bulletin from any of the growers will be considred
the same as a score.
If the originator wishes awards to be shown in the next
year's C&H Book, the cultivar should be entered by name.
If it is entered by alpha/numberic designation, the awards
will NOT be printed. Thus a new (named) cultivar will be
listed: a. If it is reported as scoring 85 or more in Trial
Garden or Seeding Bench evaluation, or b. If it is reported
as winning two or more blue ribbons in open competition.
Foreign cultivars may be entered in either ADS Bench
Evaluation or Trial Garden and be eligible for one of the
awards as long as the cultivar is not commercially available
in the United States or Canada.
Copyright © 1995
- 2008 Andrew