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Eucalyptus Workshop, LA Co Eucalyptus Workshop, LA Co. Arboretum, June 28, 2019 Eucalyptus Workshop Schedule 8:00 - 8:15 AM Introduction 8:15 - 9:15 AM Eucalypt Biology 9:15 - 10:00 AM Investigating Eucalypts Identification Characteristics: Bark, Leaves, Stems, Flowers and Fruit 10:00 - 10:15 AM Coffee and Tea Break 10:15 - 11:15 AM Eucalypt Morphology Walk, Species Characters in the Field 11:15 - 11:45 PM Identifying Species by Fruit Type 11:45 - 1:00 PM Lunch 1:00 - 2:15 PM Using Identification Keys for Eucalypt Identification 2:15 - 3:00 PM Outdoor Field Activity: Rapid Field Identification, Keying Trees in the Field 3:00 - 3:15 PM Coffee, Tea, and Snack Break 3:15 - 3:45 PM Southern California’s Most Common Eucalypts 3:45 - 4 PM Discussion, Wrap-up, Questions, Evaluation, and CEUs Matt Ritter, Ph.D. Jenn Yost, Ph.D. Biology Department Biology Department Cal Poly, San Luis Obispo 93407 Cal Poly, San Luis Obispo 93407 [email protected], 805.756.2775 [email protected], 805.756.5869 Consider donating to the Cal Poly Plant Conservatory The Cal Poly Plant Conservatory Consider a tax deductible donation to help our Plant Conservatory and Botany Program. The Plant Conservatory trains the next generation of botanists, arborists, and horticulturists. Go to: https://giving.calpoly.edu 1. Click Give Now in the top right 2. Click College of Science and Math on the left quick link menu 3. Enter the amount of your donation in the Cal Poly Plant Conservatory Box Or: Send a check made out to “The Cal Poly Plant Conservatory” to Matt Ritter, Biology, 1 Grand Ave., San Luis Obispo, CA, 93407 Thank you! Eucalypt Field Identifcation Sheet Species name: __________________________________________ Growth habit: tree or mallee Bark type: rough or smooth If rough: wholly rough or partly rough Pith: glandular or not glandular Leaves Juvenile leaves (if present): opposite or alternate - petiolate or sessile - green or glaucous Adult leaves: opposite or alternate - lanceolate or rounded or other shape same color on both sides or different colors on both sides Leaf venation: side veins few or side veins many parallel or acute or obtuse Leaf oil glands: obvious obscured Flowers Inforescence type: branched at shoot tips or umbel in leaf axil branched in leaf axils or solitary fowers Average number of buds per umbel: ___________ Peduncle: round in cross-section or fattened (strap-like) Flower buds: sessile or pedicellate operculum scar present or absent glaucous or green Stamens Stamen color: all stamens with anthers or outer stamens missing anthers horn shaped Operculum and bud shapes: horn shaped beaked rounded conical bud diamond buds horn bud spindle bud club shaped shaped shaped shaped Fruit Glaucous or not glaucous sessile or pedicellate Fruit diameter: ___________ Fruit shape: Barrel Hemispherical Funnel Urn Spherical Cup Fruit Disk: level or ascending or descending broad or thin Fruit Valves: enclosed or rim level or exserted Other Notable Features: Eucalypt Field Identifcation Sheet Species name: __________________________________________ Growth habit: tree or mallee Bark type: rough or smooth If rough: wholly rough or partly rough Pith: glandular or not glandular Leaves Juvenile leaves (if present): opposite or alternate - petiolate or sessile - green or glaucous Adult leaves: opposite or alternate - lanceolate or rounded or other shape same color on both sides or different colors on both sides Leaf venation: side veins few or side veins many parallel or acute or obtuse Leaf oil glands: obvious obscured Flowers Inforescence type: branched at shoot tips or umbel in leaf axil branched in leaf axils or solitary fowers Average number of buds per umbel: ___________ Peduncle: round in cross-section or fattened (strap-like) Flower buds: sessile or pedicellate operculum scar present or absent glaucous or green Stamens Stamen color: all stamens with anthers or outer stamens missing anthers horn shaped Operculum and bud shapes: horn shaped beaked rounded conical bud diamond buds horn bud spindle bud club shaped shaped shaped shaped Fruit Glaucous or not glaucous sessile or pedicellate Fruit diameter: ___________ Fruit shape: Barrel Hemispherical Funnel Urn Spherical Cup Fruit Disk: level or ascending or descending broad or thin Fruit Valves: enclosed or rim level or exserted Other Notable Features: Eucalypt Field Identifcation Sheet Species name: __________________________________________ Growth habit: tree or mallee Bark type: rough or smooth If rough: wholly rough or partly rough Pith: glandular or not glandular Leaves Juvenile leaves (if present): opposite or alternate - petiolate or sessile - green or glaucous Adult leaves: opposite or alternate - lanceolate or rounded or other shape same color on both sides or different colors on both sides Leaf venation: side veins few or side veins many parallel or acute or obtuse Leaf oil glands: obvious obscured Flowers Inforescence type: branched at shoot tips or umbel in leaf axil branched in leaf axils or solitary fowers Average number of buds per umbel: ___________ Peduncle: round in cross-section or fattened (strap-like) Flower buds: sessile or pedicellate operculum scar present or absent glaucous or green Stamens Stamen color: all stamens with anthers or outer stamens missing anthers horn shaped Operculum and bud shapes: horn shaped beaked rounded conical bud diamond buds horn bud spindle bud club shaped shaped shaped shaped Fruit Glaucous or not glaucous sessile or pedicellate Fruit diameter: ___________ Fruit shape: Barrel Hemispherical Funnel Urn Spherical Cup Fruit Disk: level or ascending or descending broad or thin Fruit Valves: enclosed or rim level or exserted Other Notable Features: Eucalypt Field Identifcation Sheet Species name: __________________________________________ Growth habit: tree or mallee Bark type: rough or smooth If rough: wholly rough or partly rough Pith: glandular or not glandular Leaves Juvenile leaves (if present): opposite or alternate - petiolate or sessile - green or glaucous Adult leaves: opposite or alternate - lanceolate or rounded or other shape same color on both sides or different colors on both sides Leaf venation: side veins few or side veins many parallel or acute or obtuse Leaf oil glands: obvious obscured Flowers Inforescence type: branched at shoot tips or umbel in leaf axil branched in leaf axils or solitary fowers Average number of buds per umbel: ___________ Peduncle: round in cross-section or fattened (strap-like) Flower buds: sessile or pedicellate operculum scar present or absent glaucous or green Stamens Stamen color: all stamens with anthers or outer stamens missing anthers horn shaped Operculum and bud shapes: horn shaped beaked rounded conical bud diamond buds horn bud spindle bud club shaped shaped shaped shaped Fruit Glaucous or not glaucous sessile or pedicellate Fruit diameter: ___________ Fruit shape: Barrel Hemispherical Funnel Urn Spherical Cup Fruit Disk: level or ascending or descending broad or thin Fruit Valves: enclosed or rim level or exserted Other Notable Features: Eucalypt Fruit Identifcation Red Flowering Gum White Iron Bark Sugar Gum Argyle Apple (Corymbia fcifolia) (Eucalyptus leucoxylon) (Eucalyptus cladocalyx) (Eucalyptus cinerea) Narrow-Leaf Peppermint Red Iron Bark Silver Dollar Gum Blue Gum (Eucalyptus nicholii) (Eucalyptus sideroxylon) (Eucalyptus polyanthemos) (Eucalyptus globulus) Lemon Scented Gum Spider Gum Red Gum Ribbon Gum (Corymbia citriodora) (Eucalyptus conferruminata) (Eucalyptus camaldulensis) (Eucalyptus viminalis) Key to Commonly Cultivated Eucalypts 1. Leaves lighter green on the underside 2. Bark rough, hard, thin, faky; fruit 3/4 in. diameter or more—Red Flowering Gum (Corymbia fcifolia) 2’ Bark rough, sof, thick, fbrous; fruit 1/2 in. diameter or less—Swamp Mahogany (Eucalyptus robusta) 2’’ Bark smooth 3. Bark with orange blotches; leaves ofen curved; Sugar Gum Red Flowering Gum mature fruit ridged; fruit valves sunken inside (Eucalyptus cladocalyx) (Corymbia ficifolia) fruit—Sugar Gum (Eucalyptus cladocalyx) 3’ Bark bluish gray; leaves straight; mature fruit smooth; valves of fruit exserted, 4. Valves 4 or 5, curved inward; buds and fruit ofen glaucous—Rose Gum (Eucalyptus grandis) 4’ Valves usually 4, erect; leaves straight; buds and fruit not glaucous—Sydney Blue Gum Swamp Mahogany (Eucalyptus saligna) (Eucalyptus robusta) Flooded Gum Eucalyptus grandis Sydney Blue Gum 1’ Leaves the same color on both sides; AND bark rough, furrowed, retained on trunk and limbs (Eucalyptus saligna) (NOTE: there is a 1’’ option on the backside) 5. Leaves silver or bluish silver in color 6. Leaves attached oppositely; fower buds and fruit grouped in threes—Argyle Apple (Eucalyptus cinerea) 6’ Leaves attached alternately, mostly less than 1/2 in. wide at widest point—Narrow-Leaf Peppermint (Eucalyptus nicholii) 6’’ Leaves attached alternately, mostly 3/4 in. wide or wider 7. Bark dark brown to black, very rough and deeply furrowed— Narrow-Leaf Peppermint Argyle Apple Red Iron Bark (Eucalyptus sideroxylon) (Eucalyptus nicholii) (Eucalyptus cinerea) 7’ Bark light brown or gray, and scraggly; leaves round or only slightly longer than wide; fowers white—Silver Dollar Gum (Eucalyptus polyanthemos) 7’’ Bark light brown or gray, and scraggly; leaves 3 to 4 times longer than broad; fowers pink—Coral Gum (Eucalyptus torquata) 5’ Leaves green Flooded Gum 8. Leaves mostly less than 1/2 in. wide at widest point— (Eucalyptus rudis) Narrow Leaf Peppermint (Eucalyptus nicholii) 8’ Leaves mostly 3/4 in. wide or wider; bark gray, fnely Silver Dollar Gum Coral Gum (Eucalyptus
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