Euphorbia ‘LAMB01’

Abstract

A new and distinct Euphorbia characias cultivar named ‘LAMB01’ is disclosed, characterized by variegated foliage and a free flowering habit. Plants are uniquely bushy in habit. The new variety is a Euphorbia hybrid, typically used for ornamental horticulture purposes.

Claims

1. A new and distinct cultivar of Euphorbia plant named ‘LAMB01’ as herein illustrated and described.

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

(1) The accompanying photograph in FIG. 1 illustrates in full color a close-up of a typical plant of ‘LAMB01’ grown outdoors at approximately 2 years old.

(2) FIG. 2 illustrates a more mature plant of approximately 4 years old, grown outdoors in Australia.

(3) FIG. 3 illustrates in full color a close up view of typical inflorescence.

(4) The photographs were taken using conventional techniques and although colors may appear different from actual colors due to light reflectance it is as accurate as possible by conventional photographic techniques.

DETAILED BOTANICAL DESCRIPTION

(5) In the following description, color references are made to The Royal Horticultural Society Colour Chart except where general terms of ordinary dictionary significance are used. The following observations and measurements describe ‘LAMB01’ plants grown in a commercial greenhouse. The growing temperature ranged from approximately 9 to 14° C. at night to 21 to 29° C. during the day. Measurements and numerical values represent averages of typical flowering types. No chemical or photoperiodic treatments were given. Botanical classification: Euphorbia characias ‘LAMB01.’

PROPAGATION

(6) Time to rooting: 10 to 14 days at approximately 21° C. Root description: Thick, well branched.

PLANT

(7) Growth habit: Upright, bushy, perennial subshrub. Height: Approximately 120 cm. Plant spread: Approximately 120 cm. Growth rate: Moderate. Branching characteristics: Moderate branching. Quantity of lateral branches: Average range 12 to 16 on a 2 year old plant. Length of lateral branches: Approximately 25 cm. Diameter of lateral branches: Approximately 0.5 cm. Texture of lateral branches: Smooth, pubescence at nodes. Internode length: Approximately 2 cm. Strength of stem: Flexible and strong. Color of lateral branches: Near RHS Greyed-Green 194A. Aspect: Upright and straight. Number of leaves per lateral branch: Approximately 40 to 60.

FOLIAGE

(8) Leaf: Type.—Simple, whorled. Basal leaves.—Arrangement: Alternate, single. Average Length: Approximately 11.5 cm. Average Width: Approximately 1.8 cm. Shape of blade: Oblanceolate. Apex: Acute. Base: Truncate. Attachment: Sessile. Margin: Entire. Texture of top surface: Pubescent. Texture of bottom surface: Pubescent. Leaf internode length: Approximately 0.7 cm. Color: Young foliage upper side: Near RHS Greyed-Green 190A, margin Green-White 157D. Margin approximately 3 mm wide. Young foliage under side: Near RHS Greyed-Green 190A, margin Green-White 157D. Margin approximately 3 mm wide. Mature foliage upper side: Near RHS Greyed-Green 191C, margin Green-White 157D. Margin approximately 3 mm wide. Mature foliage under side: Near RHS Greyed-Green 191C, margin Green-White 157D. Margin approximately 3 mm wide. Venation.—Type: Pinnate. Venation color upper side: Near RHS Greyed-Green 191D. Venation color under side: Near RHS Greyed-Green 191C. Petiole: Not present.

FLOWER

(9) Bloom period: Naturally blooming late June through mid July. Bud: Bud shape.—Spherical. Bud length.—Approximately 0.05 cm. Bud diameter.—Approximately 0.05 cm. Bud color.—Near Yellow 1C. Inflorescence: Form.—Umbel-like compound cyme. Primary Cymes: 5-merous. Secondary Cymes: 3-merous. Measurement of average primary cyme.—Diameter of entire inflorescence: Approximately 10 to 12 cm. Depth of entire inflorescence: Approximately 15 cm. Individual flowers: Length.—Approximately 2 cm. Width.—Approximately 0.9 cm. Aspect.—Upright. Duration on plant.—Approximately 3 to 4 weeks. Persistent. Fragrance: None. Floral bracts: Arrangement.—2 or 3 opposite or whorled, subtending cyathium. Shape.—Broadly ovate. Apex.—Acute. Base.—Attenuate. Length.—0.8 cm, average. Width.—0.7 cm. Texture.—Glaborous. Color.—Upper side of immature bract: Near RHS Yellow 2C. Under side of immature bract: Near RHS Yellow 2C. Upper side of mature bract: Near RHS Yellow 2C. Under side of mature bract: Near RHS Yellow 2C. Cyathia: Arrangement.—Involucre of cyathium cup-shaped; 4-lipped, upright. Other.—3 petaloid appendages subtending the cyathia: Height: Approx. 0.3 cm. Diameter: Approx. 0.5 cm. Color Immature: Near RHS Yellow 5A. Color Mature: Near RHS Yellow 5C. Peduncle: Peduncle length.—Approximately 2.3. Peduncle diameter.—Approximately 1 cm. Angle.—Approximately 45 deg from center of whorl. Color.—Near RHS Greyed-Green 190A. Pedicils: Length.—Approx. 0.5 cm. Diameter.—Approx. 0.1 cm. Angle.—Near 45 deg. from vertical. Strength.—Strong, flexible. Texture.—Smooth. Color.—Near RHS Greyed-Green 190C.

REPRODUCTIVE ORGANS

(10) Androecium: Stamens.—2 to 4, branched and holding 4 anthers. Anther shape.—Bi-lobed. Anther length.—Approximately 0.05 cm. Anther color.—Near RHS Yellow 5A, Filament colored Yellow 3D. Pollen quantity.—Not observed. Gynoecium: Pistil number.—1. Pistil shape.—Tri-parted. Pistil length.—Approx. 0.5 cm. Style length.—Approx. 0.2 cm. Style color.—Near RHS 154D. Stigma shape.—Bi-lobed. Stigma color.—Near RHS Yellow 7A. Ovary diameter.—Near RHS 0.2 cm. Ovary color.—Near RHS 154A.

OTHER CHARACTERISTICS

(11) Disease resistance: Neither resistance nor susceptibility to diseases or pests of Euphorbia characias has been observed in this variety. Drought tolerance and cold tolerance: Tender perennial. Tolerates high temperature to at least 32° C. Tolerates low temperatures to −5° C. Drought tolerance has not been measured. Fruit/seed production: Fruit and seed production not observed to date.