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 U.S. DEPARTMENT OF AGRICULTURE EXHIBIT C

AGRICULTURAL MARKETING SERVICE

SCIENCE AND TECHNOLOGY

PLANT VARIETY PROTECTION OFFICE

OBJECTIVE DESCRIPTION OF VARIETY

Lettuce 

(Lactuca sativa L.) 

NAME OF APPLICANT (S) TEMPORARY OR EXPERIMENTAL DESIGNATION VARIETY NAME

FIELD TRIAL LOCATIONS IN DECIMAL DEGREES (DD)

LOCATION LATITUDE LONGITUDE

Directions: Please follow the UPOV Test Guidelines for Lettuce (TG013) when collecting data. Unless otherwise indicated, all 

quantitative observations should be made on 20 plants or parts taken from each of 20 plants. 

UPOV Morphology:

I. SEED:

1. ________Seed Color:

1. White 2. Yellow 3. Brown

4. Black

II. PLANT:

1. ________Plant Head Diameter:

1. Very Small 2. Very Small to Small 3. Small

4. Small to Medium 5. Medium 6. Medium to Large

7. Large 8. Large to Very Large 9. Very Large

2. ________Plant: Degree of Overlapping of Upper Part of Leaves:

1. Absent or Weak 2. Medium 3. Strong

ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 1 of 21
UPOV Morphology:

II. PLANT: (continued)

3. ________Plant: Number of Leaves (Only Varieties with Degree of Overlapping of Upper Part of Leaves

Absent or Weak)

1. Very Few 2. Very Few to Few 3. Few

4. Few to Medium 5. Medium 6. Medium to Many

7. Many 8. Many to Very Many 9. Very Many

III. LEAF:

1. ________Leaf Attitude:

1. Erect 2. Erect to Semi-Erect 3. Semi-Erect

4. Semi-Erect to Horizontal 5. Horizontal

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 2 of 21
UPOV Morphology:

III. LEAF: (continued)

 2. ________Leaf: Number of Divisions:

 1. Absent or Very Few 2. Very Few to Few 3. Few

 4. Few to Medium 5. Medium 6. Medium to Many

 7. Many 8. Many to Very Many 9. Very Many

 

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 3 of 21
UPOV Morphology:

III. LEAF: (continued)

 3. ________Leaf: Shape (Only Varieties with Number of Divisions Absent or Very Few) 

 

1. Triangular 2. Lanceolate 3. Medium Oblate 

4. Narrow Oblate 5. Circular 6. Broad 

7. Medium Elliptic 8. Narrow Elliptic 9. Linear 

10. Broad Obtrullate 11. Obovate 12. Oblanceolate

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 4 of 21
UPOV Morphology:

III. LEAF: (continued)

 4. ________Leaf: Shape of Apex (Only Varieties with Number of Divisions: Absent or Very Few):

 1. Acute 2. Obtuse 3. Rounded

 4. Obcordate

 5. ________Leaf: Longitudinal Section:

 1. Concave 2. Concave to Flat 3. Flat

 4. Flat to Convex 5. Convex

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 5 of 21
UPOV Morphology:

III. LEAF: (continued)

 6. ________Leaf: Width of Lobes (Only Oakleaf Type Varieties): 

 1. Very Narrow 2. Very Narrow to Narrow 3. Narrow

 4. Narrow to Medium 5. Medium 6. Medium to Broad

 7. Broad 8. Broad to Very Broad 9. Very Broad

 7. ________Leaf: Anthocyanin Coloration:

 1. Absent or Very Weak 2. Very Weak to Weak 3. Weak

 4. Weak to Medium 5. Medium 6. Medium to Strong

 7. Strong 8. Strong to Very Strong 9. Very Strong

 8. ________Leaf: Hue of Anthocyanin Coloration:

 1. Reddish 2. Purplish 3. Brownish

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 6 of 21
UPOV Morphology:

III. LEAF: (continued)

 9. ________Leaf: Area Covered by Anthocyanin Coloration:

 1. Very Small 2. Very Small to Small 3. Small

 4. Small to Medium 5. Medium 6. Medium to Large

 7. Large 8. Large to Very Large 9. Very Large

 10. ________Leaf Color:

 1. Green 2. Yellowish Green 3. Greyish Green

 11. ________Leaf: Intensity of Green Color:

 1. Very Light 2. Very Light to Light 3. Light

 4. Light to Medium 5. Medium 6. Medium to Dark

 7. Dark 8. Dark to Very Dark 9. Very Dark

 12. ________Leaf: Glossiness of Upper Side:

 1. Absent or Very Weak 2. Very Weak to Weak 3. Weak

 4. Weak to Medium 5. Medium 6. Medium to Strong

 7. Strong 8. Strong to Very Strong 9. Very Strong

 13. ________Leaf Thickness:

 1. Very Thin 2. Thin 3. Medium

 4. Thick 5. Very Thick

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 7 of 21
UPOV Morphology:

III. LEAF: (continued)

 14. ________Leaf: Blistering:

 1. Absent or Very Weak 2. Very Weak to Weak 3. Weak

 4. Weak to Medium 5. Medium 6. Medium to Strong

 7. Strong 8. Strong to Very Strong 9. Very Strong

 15. ________Leaf: Size of Blisters:

 1. Very Small 2. Very Small to Small 3. Small

 4. Small to Medium 5. Medium 6. Medium to Large

 7. Large 8. Strong to Very Strong 9. Very Large

 16. ________Leaf: Undulation of Margin:

 1. Absent or Very Weak 2. Very Weak to Weak 3. Weak

 4. Weak to Medium 5. Medium 6. Medium to Strong

 7. Strong 8. Strong to Very Strong 9. Very Strong

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 8 of 21
UPOV Morphology:

III. LEAF: (continued)

17. ________Leaf: Type of Incisions of Margin:

1. Crenate 2. Regularly Dentate 3. Irregularly Dentate

4. Bidentate 5. Tridentate

18. ________Leaf: Depth of Incisions of Margin:

1. Absent or Very Shallow 2. Very Shallow to Shallow 3. Shallow

4. Shallow to Medium 5. Medium 6. Medium to Deep

7. Deep 8. Deep to Very Deep 9. Very Deep

19. ________Leaf: Depth of Secondary Incisions of Margin (Only Varieties with Type of Incisions of Margin

Irregularly Dentate Bi- or Tri-dentate)

1. Very Shallow 2. Very Shallow to Shallow 3. Shallow

4. Shallow to Medium 5. Medium 6. Medium to Deep

7. Deep 8. Deep to Very Deep 9. Very Deep

20. ________Leaf: Density of Incisions of Margin:

1. Very Sparse 2. Very Sparse to Sparse 3. Sparse

4. Sparse to Medium 5. Medium 6. Medium to Dense

7. Dense 8. Dense to Very Dense 9. Very Dense

21. ________Leaf: Venation:

1. Not Flabellate 2. Semi-Flabellate 3. Flabellate

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 9 of 21
UPOV Morphology:

IV. HEAD:

1. ________Head: Size (Only Varieties with Plant: Degree of Overlapping of Upper Part of Leaves: Medium or Strong):

1. Very Small 2. Very Small to Small 3. Small

4. Small to Medium 5. Medium 6. Medium to Large

7. Large 8. Large to Very Large 9. Very Large

2. ________Head: Shape in Longitudinal Section (Only Varieties with Degree of Overlapping of Upper Part of Leaves:

Medium or Strong):

1. Narrow Elliptic 2. Broad Elliptic 3. Circular

4. Narrow Oblate

3. ________Head: Density (Only Varieties with Degree of Overlapping of Upper Part of Leaves: Medium or Strong):

 : 

1. Very Loose 2. Very Loose to Loose 3. Loose

4. Loose to Medium 5. Medium 6. Medium to Dense

7. Dense 8. Dense to Very Dense 9. Very Dense

V. STEM:

1. ________Stem: Length (Only Stem Type Varieties):

1. Very Short 2. Very Short to Short 3. Short

4. Short to Medium 5. Medium 6. Medium to Long

7. Long 8. Long to Very Long 9. Very Long

2. ________Stem: Width (Only Stem Type Varieties):

1. Narrow 2. Medium 3. Broad

3. ________Stem: Shape in Longitudinal Section (Only Stem Type Varieties):

1. Cylindrical 2. Conical 3. Fusiform

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 10 of 21
UPOV Morphology:

V. STEM: (continued)

4. ________Stem: Color (Only Stem Type Varieties):

1. Whitish Green 2. Light Green 3. Medium Green

4. Greenish Purple 5. Purplish Red

5. ________Stem: Color of Flesh (Only Stem Type Varieties):

1. Yellowish White 2. Whitish Green 3. Light Green

4. Medium Green 5. Dark Green

VI. HARVEST MATURITY:

1. ________Time of Harvest Maturity (Only Varieties with Degree of Overlapping of Upper Part of Leaves:

Medium or Strong):

1. Very Early 2. Very Early to Early 3. Early

4. Early to Medium 5. Medium 6. Medium to Late

7. Late 8. Late to Very Late 9. Very Late

VII. BOLTING:

1. ________Bolting: Time of Beginning of Bolting:

1. Very Early 2. Very Early to Early 3. Early

4. Early to Medium 5. Medium 6. Medium to Late

7. Late 8. Late to Very Late 9. Very Late

2. ________Auxiliary Sprouting:

1. Absent or Weak 2. Medium 3. Strong

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 11 of 21
UPOV Morphology:

VII. BOLTING: (continued)

3. ________Bolting: Bolting Stem: Fasciation:

1. Absent or Very Weak 2. Very Weak to Weak 3. Weak

4. Weak to Medium 5. Medium 6. Medium to Strong

7. Strong 8. Strong to Very Strong 9. Strong

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 12 of 21
UPOV Disease Resistance:

VIII. RESISTANCE: (1= Absent, 9=Present)

 1. ________Resistance to Bremia lactucae Isolate BI: 16EU

2. ________Resistance to Bremia lactucae Isolate BI: 17EU

3. ________Resistance to Bremia lactucae Isolate BI: 20EU

4. ________Resistance to Bremia lactucae Isolate BI: 21EU

5. ________Resistance to Bremia lactucae Isolate BI: 22EU

6. ________Resistance to Bremia lactucae Isolate BI: 23EU

7. ________Resistance to Bremia lactucae Isolate BI: 24EU

8. ________Resistance to Bremia lactucae Isolate BI: 25EU

9. ________Resistance to Bremia lactucae Isolate BI: 26EU

10. ________Resistance to Bremia lactucae Isolate BI: 27EU

11. ________Resistance to Bremia lactucae Isolate BI: 29EU

12. ________Resistance to Bremia lactucae Isolate BI: 30EU

13. ________Resistance to Bremia lactucae Isolate BI: 31EU

14. ________Resistance to Lettuce mosaic virus (LMV) Pathotype II

15. ________Resistance to Nasonovia ribisnigri (Nr) Biotype Nr: 0

16. ________Resistance to Fusarium oxysporum 6.sp. lactucae Race Fol: 1

1. Susceptible

2. Moderately Resistant

3. Highly Resistant

 

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 13 of 21
USDA Morphology: 

I. PLANT TYPE: 

 1. ________Plant Type:

 1. Butterhead 

2. Novita Type 

3. Iceberg Type 

3A. Iceberg Type: Eastern Iceberg Group 

3B. Iceberg Type: Great Lakes Group 

3C. Iceberg Type: Salinas Group 

3D. Iceberg Type: Vanguard Group 

3E. Iceberg Type: Other (Specify) ____________________________ 

 

4. Batavia Type

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 14 of 21
USDA Morphology: 

I. PLANT TYPE: (continued)

 1. ________Plant Type: (continued)

5. Frisee d’Amerique Type 

6. Lollo Type

7. Oakleaf Type 

8. Multi-Divided Type

9. Frillice Type 

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 15 of 21
USDA Morphology: 

I. PLANT TYPE: (continued)

 1. ________Plant Type: (continued)

10. Cos or Romaine 

11. Bibb/Gem 

12. Stem 

13. Cutting/Whole Leaf 

14. Latin 

15. Other (Specify)________________________

 

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 16 of 21
USDA Morphology: 

II. COTYLEDON TO FOURTH LEAF STAGE:

1. ________Cotyledon to Fourth Leaf Stage: Shape of Cotyledons:

1. Broad 2. Intermediate 3. Spatulate

2. ________Cotyledon to Fourth Leaf Stage: Shape of Fourth Leaf:

1. Transverse Oval 2. Round 3. Oval

4. Elongated 5. Lanceolate 6. Pinnately Lobed

III. PLANT:

1. ________Plant Head Diameter (cm)

2. ________Plant Spread of Frame Leaves (cm)

3. ________Plant: Number of Leaves (Only Varieties with Degree of Overlapping of Upper Part of Leaves

Absent or Weak) (#)

IV. LEAF:

1. ________Leaf: Number of Divisions (#)

V. STEM:

1. ________Stem: Length (Only Stem Type Varieties) (cm)

2. ________Stem: Width (Only Stem Type Varieties) (cm)

VI. BUTT:

1. ________Butt Shape:

1. Slightly Concave 2. Flat 3. Rounded

2. ________Butt: Midrib:

1. Flattened 2. Moderately Raised 3. Prominently Raised

VII. HARVEST MATURITY:

1. ________Time of Harvest Maturity (Only Varieties with Degree of Overlapping of Upper Part of Leaves:

Medium or Strong) (Days)

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 17 of 21
Big Vein

Corky Root Rot

USDA Disease Resistance: 

VIII. VIRAL DISEASES:

(1=Immune, 2=Resistant, 3=Moderately Resistant/Moderately Susceptible, 4=Susceptible, 5=Highly Susceptible)

Please List Disease: Response:

1. __________________________

2. __________________________

3. __________________________

4. __________________________

5. __________________________

IX. FUNGAL/BACTERIAL DISEASES:

(1=Immune, 2=Resistant, 3=Moderately Resistant/Moderately Susceptible, 4=Susceptible, 5=Highly Susceptible)

Please List Disease: Response:

1. __________________________

2. __________________________

3. __________________________

4. __________________________

5. __________________________

USDA Insect Resistance: 

X. INSECTS:

(1=Immune, 2=Resistant, 3=Moderately Resistant/Moderately Susceptible, 4=Susceptible, 5=Highly Susceptible)

Please List Insect: Response:

1. __________________________

2. __________________________

3. __________________________

4. __________________________

5. __________________________

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 18 of 21
USDA Physiological and Post-Harvest Stress: 

XI. PHYSIOLOGICAL STRESSES:

(1=Immune, 2=Resistant, 3=Moderately Resistant/Moderately Susceptible, 4=Susceptible, 5=Highly Susceptible)

 Please List Stressor: Response:

 1. __________________________ 

 

 2. __________________________

 3. __________________________

 4. __________________________

 5. __________________________

XII. POST-HARVEST STRESS:

(1=Immune, 2=Resistant, 3=Moderately Resistant/Moderately Susceptible, 4=Susceptible, 5=Highly Susceptible)

 Please List Stressor: Response:

 1. __________________________ 

 

 2. __________________________

 3. __________________________

 4. __________________________

 5. __________________________

 

 XIII. BIOCHEMICAL OR ELECTROPHORETIC MARKERS:

 1. ________Biochemical or Electrophoretic Markers:

 1. Absent 2. Present

[ PLEASE ENTER ADDITIONAL VARIETY TRAITS ON NEXT PAGE ]

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 19 of 21
Disease Resistance Comments: 

Insect Resistance Comments: 

Additional Comments: 

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 20 of 21
References:

Anonymous, 1976. All About Tomatoes. Ortho Books, Chevron Chemical Co., San Francisco. In three volumes: Midwest/Northeast 

Edition, West Edition, and South Edition.

Ware, G.W. & J.P. McCollum, 1968. Producing Vegetable Crops. The Interstate Printer & Publishers, Inc., Danville, Illinois. Chapter 

30, pp. 451-473, “Tomatoes”.

Warnock, S.J. 1978. Using Tomato Heat Units. Leaflet No. 6, Campbell Institute for Agricultural Research, Camden, NJ. 10 p.

Webb, R.E., T.H. Barksdale, & A.K. Stoner, 1973. “Tomatoes”, pp. 344-361, in: Nelson, R.R. (Ed.), Breeding Plants for Disease 

Resistance. Pennsylvania State University Press, University Park.

Young, P.A. & J.W. MacArthur, 1947. Horticultural characters of tomatoes. Bull. Texas Agric. Exper. Station No. 698..

Exhibit C (Lettuce) ST-470-01 ( 12/2018 ) designed by the Plant Variety Protection Office Page 21 of 21