Denomination: 'Masbolimket'
Trade name: Jim Crockett
Botanical Name: Boltonia asteroides var. latisquama
Applicant/Holder: University of Massachusetts
Office of Commercial Ventures
and Intellectual Property, 512 Goodell
Amherst, Massachusetts
United States of America
Breeder: Michael Jaremchuk, University of Massachusetts, Amherst, 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: 2004-03-24
Application Number: 04-4127
Grant of Rights Date: 2006-09-08
Certificate Number: 2515
Date rights surrendered: 2015-09-08

Variety Description

Variety used for comparison: 'Nana'

Summary: The plants of 'Masbolimket' have a narrow upright growth habit and lesser degree of branching than those of 'Nana' which have an upright bushy growth habit. 'Masbolimket' has thicker stems and darker green leaves than 'Nana'. The flowers of 'Mabolimket' have a larger diameter and more persistent light violet blue colour than those of 'Nana'.


'Masbolimket' is a boltonia variety with a narrow upright plant growth habit and high degree of branching. The stems are thick, ribbed, light green with weak to moderate anthocyanin colouration and very sparse pubescence. The leaves are simple and arranged alternately along the stem. The leaf blade is elliptic with an acute shaped apex. The upper side of the leaf blade is medium green with very sparse pubescence. The margin of the lower leaves is serrate.

The inflorescence of 'Masbolimket' has compositae type flower heads that are positioned in both terminal and axillary locations on the stem. The attitude of the flowers is erect. The bracts are lanceolate. The shape of the ray florets is oblanceolate with an acute shaped apex. The ray florets are light blue violet on the upper and lower sides with streaks of darker blue violet on the upper side. The colour fades slowly as the flowers age.

Origin & Breeding History: 'Masbolimket' originated from a controlled breeding program which took place in Amherst, Massachusetts, USA from 1997 to 2000. It was the result of the open pollination of wild plants of Boltonia asteroides (L.) L'Hérit. var. latisquama (A. Gray) Cronquist. The resulting seed was germinated and the seedlings grown out in 1998. 'Masbolimket' was selected in 2000 as a single superior seedling.

Tests & Trials: The test and trial for 'Masbolimket' was conducted in a polyhouse during the summer of 2005 at BioFlora Inc. in St. Thomas, Ontario. The trial included 15 plants of each variety. The plants were grown from rooted cuttings which were transplanted into 15 cm pots on April 29, 2005. All colour characteristics were determined using the 2001 RHS colour chart and measured characteristics were based on ten plant measurements.

Comparison tables for 'Masbolimket' with reference variety 'Nana'

Flower diameter (cm)

  'Masbolimket' 'Nana'
mean 4.7 4.0
std. deviation 0.38 0.22

Ray floret colour (RHS)

  'Masbolimket' 'Nana'
upper side 91D with 91B streaks 91D with 91C streaks
lower side 91C-D 91C-D
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