Plant 21 LLC
32149 Aquaduct Road
United States of America
Ushio Sakazaki, Shiga, Japan
|Agent in Canada:||
38723 Fingal Line
St. Thomas, Ontario
|Grant of Rights Date:||2008-08-29|
|Date rights surrendered:||2009-08-25|
Variety used for comparison: Mecardonia grandiflora
Summary: 'USMECA67' has thinner stems and denser branching than plants of Mecardonia grandiflora. 'USMECA67' has smaller leaves, a shorter calyx and darker flower colour than plants of Mecardonia grandiflora.
PLANT: trailing/spreading growth habit, dense branching
STEM: thin, weak anthocyanin colouration at tips, no stem wings
LEAVES: simple, elliptic to ovate, serrate margin, medium number of serrations, light to medium green, no variegation, no pubescence
FLOWER: very weak anthocyanin colouration in pedicel, strong reflexing of corolla lobes, yellow with dark violet veins on upper side of lobes.
Origin & Breeding History: 'USMECA67' originated from a cross made in Hikone, Japan in 1999 between a Mecardonia caespitosa plant as the female parent and a Mecardonia dianthera plant as the male parent. The F1 seed was collected and sent to EuroAmerican Propagators in Bonsall, California, USA for further breeding and selection. The new Mecardonia variety was selected as a single plant from the resultant progeny on June 10, 2000. Selection criteria included good vigour, excellent plant habit and flower colour.
Tests & Trials: Tests and trials were conducted in a polyhouse during the summer of 2007 in St. Thomas, Ontario. The trial included a total of 15 plants of each variety. All plants were grown from rooted cuttings and transplanted into 15 cm pots on May 8, 2007. Observations and measurements were taken from 10 plants of each variety on June 27-28, 2007. All colour measurements were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.
Comparison tables for 'USMECA67' with reference variety Mecardonia grandiflora
Leaf length (cm)
Leaf width (cm)
Calyx length (mm)
Colour of corolla (RHS)
|upper side||9A (brighter than)||9B|
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