Foam Flower

Denomination: 'TNTIA041'
Trade name: Stargazer Mercury
Botanical Name: Tiarella
Applicant/Holder: Terra Nova Nurseries, Inc.
10051 S. Macksburg Rd.
Canby, Oregon
United States of America
Breeder: Garry J. Gosset, Portland, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2004-11-17
Application Number: 04-4486
Grant of Rights Date: 2007-08-17
Certificate Number: 2864
Date rights surrendered: 2012-09-06

Variety Description

Variety used for comparison: 'Spring Symphony'

Summary: 'TNTIA041' has taller plants than 'Spring Symphony'. The secondary colour of the leaf blade is located at the center and extensively along the mid and lateral veins of all lobes of 'TNTIA041', while it is located at the center and extending only slightly along the mid and lateral veins of all lobes of 'Spring Symphony'. 'TNTIA041' has a larger amount of secondary colour per leaf blade than 'Spring Symphony'.


PLANT: mounding foliage

LEAF BLADE: palmate-like shape (five main lobes and one to two secondary lobes), strong degree of lobing, closed base, irregular crenate to dentate margin, very weak undulation of the margin, sparse pubescence on the upper side, medium pubescence on the veins on the lower side, variegation present, main colour on upper side is medium green, secondary colour on upper side is black with reddish tones, a medium to large amount of secondary colour is located at the center of the leaf blade as well as extensively along the mid and lateral veins of all lobes, light brown green on lower side
PETIOLE: dense pubescence

INFLORESCENCE: raceme type
PEDUNCLE: light green becoming red brown at maturity, dense pubescence
FLOWER: rotate
PETAL: narrow elliptic, white (155A)
ANTHER: orange before pollen dehiscence

Origin & Breeding History: 'TNTIA041' was developed by the breeder, Gary J. Gossett, an employee of Terra Nova Nurseries, Inc., in Canby, Oregon, U.S.A. It originated from a cross made in May of 1999 between unknown Tiarella plants and was selected in April of 2002, based on interesting leaf foliage, flower colour, compact growth habit and plant vigour.

Tests & Trials: The test and trial for 'TNTIA041' was conducted in a poly-house during the summer of 2006 at BioFlora Inc. in St. Thomas, Ontario. The trial included 15 plants of each variety. Rooted cuttings were transplanted into 15 cm pots on May 10, 2006. Observations and measurements were taken from 10 plants of each variety on July 11, 2006. All colour measurements were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'TNTIA041' with reference variety 'Spring Symphony'

Plant height (cm)

  'TNTIA041' 'Spring Symphony'
mean 36.6 23.9
std. deviation 2.37 2.31

Colour of upper side of leaf blade (RHS)

  'TNTIA041' 'Spring Symphony'
main 137A-146B 137A
secondary 200A with 187A tones N186A

Colour of leaf blade (RHS)

  'TNTIA041' 'Spring Symphony'
lower side 138B 194A

Click on image for larger view
Foam Flower: 'TNTIA041' (left) with reference variety 'Spring Symphony' (right)

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