<i>Huechera </i>plant named ‘TNHEUNESI’

Abstract

A new and distinct Heuchera plant characterized by lime green leaves with dark orange veins in cold weather changing to orange-red centers in warm temperatures, medium tall, upright flowering stems with dark pink flowers, medium size, slightly lobed, geranium-like leaves, good sun and shade tolerance, a medium-large, mounding habit with excellent crown count, and excellent vigor.

Claims

1. A new and distinct Heuchera plant as herein illustrated and described.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a twelve-month-old plant of Heuchera TNHEUNESI growing in the field in full sun in May in Canby, Oreg.

(2) FIG. 2 shows a nine-month-old plant of Heuchera TNHEUNESI growing in a one-gallon pot in full sun in late October in Canby, Oreg.

DETAILED PLANT DESCRIPTION

(3) The following is a detailed description of the new Heuchera cultivar based on observations taken in October of a nine-month-old specimen growing in the trial field in part shade in Canby, Oreg. Canby is Zone 8 on the USDA Hardiness map. Temperatures range from a high of 95 F. in August to an average of 32 F. in January. Normal rainfall in Canby is 42.8 inches per year. The color descriptions are all based on The Royal Horticultural Society Colour Chart, 5.sup.th edition, 2007. Plant: Form.Basal rosette, herbaceous perennial. Hardiness.USDA Zone 3 to 9. Size.17 cm tall from ground to foliage, 55 cm tall from ground to top of flowers, 30 cm wide. Number of crowns.About 25. Habit.Medium-large, mounding. Vigor.Excellent. Leaf: Type.Simple. Arrangement.Rosette. Shape.Broadly ovate to orbicular. Number.About 230. Blade size.Grows to 10.5 cm long and 9 cm wide. Venation.Palmate. Lobing /Division.7 shallow palmate lobes. Margins.Crenate, slightly undulate; leaf margin indentations, medium; depth of indentations, medium. Apex.Mucronulate. Base.Cordate, strongly overlapping and often spiraling in. Surface texture.Glandular-puberulent on both sides. Leaf rugosity.Absent. Petiole description.Grows to 20 cm long and 4 mm wide, glandular hairs, Yellow Green 144C. Leaf color.Mature leaves in warm temperatures: top side Greyed Orange 172B in center, veins blending to Yellow Green 151C, margins Yellow Green 144B, bottom side in center and veins Greyed Orange 172D blending to Yellow Green 144D; leaves in cool temperatures: top side between Green 137B and Yellow Green 144A and veins between Greyed Orange 173A and Greyed Orange 173B, bottom side closest to Greyed Green 194B and veins Greyed Green 195B. Leaf color.Immature leaves, lower surface 162B; upper leaf surface 153D. Leaf glossiness.Weak. Inflorescence: Size.Grows to 12.5 cm wide and 16 cm long. Type.Thyrse, strong, upright. Number of thyrse.Up to 75. Number of flowers per thyrse.85. Peduncle.Grows to 29 cm long and 5 mm wide at base, glandular hairs, bottom closest to Yellow Green 144C blending to Yellow Green 144C strongly tinted with Greyed Orange 176C. Pedicel.Grows to 4 mm long, with glandular hairs, Greyed Purple 187C. Bloom period.Late May to frost in Canby, Oreg. Density of flowers.Within the inflorescence, sparse. Flower bud: Size.4 mm wide and 6 mm long. Description.Glandular-puberulent, ovoid, down facing. Color.Closest to Red Purple 61C. Flower: Type.Perfect. Shape.Campanulate. Attitude.Down and side-facing. Size.8 mm long and 6 mm wide. Corolla description.5 petals, each 2 mm long and 0.5 mm wide, spatulate, margins entire, tip acute, glandular-puberulent on outside, glabrous on inside, both sides Red Purple 59C. Calyx description.Campanulate, 8 mm long and 5 mm wide, with 5 lobes with narrow sinuses divided halfway to the base, each 3 mm wide and 2.5 mm long, oblong in shape, back side glandular-puberulent with glandular hairs, glabrous inside, tip obtuse, margin entire, both sides closest to Red Purple 61B tinted Red Purple 59B on tips. Stamen description.5 in number, filaments 1.5 mm long, White NN155C, anthers 0.5 mm long, Greyed Orange 167B. Pollen.Sparse. Pistil description.1, 2-beaked, 8 mm long and 2 mm wide, White 155D overall, ovary 4.5 mm long and 2.5 mm wide, style 4 mm long. Fragrance.None. Lastingness.Each thyrse blooms for about 3 weeks on the plant. Fruit and seed: None seen. Pest and disease tolerance: The new cultivar is typical to the genus. No known resistances to pests or diseases. No problems have been found in Canby, Oreg.