Florida 4-H Horticulture Identification and Judging Study Manual: Vegetables 1

Transcription

1 Circular 4HEHL 24 Florida 4-H Horticulture Identification and Judging Study Manual: Vegetables 1 J. M. Stephens 2 There are 45 vegetables you should know in preparing for the 4 H Horticulture Contest. Each has been selected based on its popularity as an item in gardens, fields, and/or market places throughout the state. Each is listed alphabetically according to its common name. The scientific name is included to establish a positive identity and for reference purposes. Contestants should keep in mind that any characteristic plant part may be shown to test identification skills. However, the more common a vegetable might be, the more likely it is that a plant part other than the main edible part would appear in "The Contest." The plants in this section of the study manual are described using many botanical terms. These terms are used to describe types of leaves, leaf position and arrangement, leaf shapes, leaf margins, flower parts and flower arrangement. It may be helpful, when studying these plant descriptions, to refer to the glossary of terms located in the rules and glossary section of the Florida 4 H Horticulture Identification and Judging Study Manual. Space is provided for you to write notes that help you identify the plant. You may also want to cut out photographs from old nursery magazines and catalogs to glue or tape in this manual to further help you in identification. Artichoke, Globe (Cynara scolymus) The edible heads are immature, unopened flower buds. Each large bud is globular, bluntly pine-cone shaped and composed of many layers of deep green bracts. The edible parts are the fleshy bases of the bracts and the center or heart to which the bracts and violet colored flower parts are attached. The plant is tall growing, spreading, with deeply notched, pointed leaves which attach to a stump several inches in diameter. See Figure 1. Figure 1. Globe Artichoke (Cynara scolymus) 1. This document is Circular 4HEHL 24, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Publication date: March Reviewed January James M. Stephens, professor, Horticultural Sciences Department, Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville FL The Institute of Food and Agricultural Sciences is an equal opportunity/affirmative action employer authorized to provide research, educational information and other services only to individuals and institutions that function without regard to race, color, sex, age, handicap, or national origin. For information on obtaining other extension publications, contact your county Cooperative Extension Service office. Florida Cooperative Extension Service / Institute of Food and Agricultural Sciences / University of Florida / Christine Taylor Stephens, Dean

2 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 2 Artichoke, Jerusalem (Helianthus tuberosus) The edible tubers are elongated, knobby, white, red or purple skinned. Several tubers are clustered at the base of each stem. The plant is upright, tall-growing with bristly woody stems, green pointed leaves, and yellow sunflower-like flowers. See Figure 2. Asparagus (Asparagus officinalis) The edible portion is the aerial stem or spear growing from a below-ground crown. Foliage is light green and fern-like. Small fruits are round and berrylike. When young, they are green, turning red when mature; then black when fully ripened. The entire fruit is planted as a seed. See Figure 3. Figure 2. Jerusalem Artichoke (Helianthus tuberosus) Figure 3. Asparagus (Asparagus officinalis)

3 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 3 Bean, Snap (Phaseolus vulgaris) Plants may be bush or vining type. Leaves are compound with 3 large, somewhat heart-shaped leaflets per leaf. Size, shape, and color of pods vary widely from small green snap to yellow wax and much larger green pole varieties. Seeds are round and slightly elongated, ranging in color from white to black and many in-between shades. See Figure 4. Bean, Lima (Phaseolus lunatus) Plants are usually bushy but are sometimes climbing. Leaves are glossy green, crisp-textured and pointed. Flowers are similar to snap beans. Pods are broad, short, flat, and pointed at the blossom-end. Each contains 3-5 flat, oval seeds which may be colored in a rather wide range of hues, from white to light green to shades of red and black. See Figure 5. Figure 5. Lima Bean (Phaseolus lunatus) Figure 4. Snap Bean (Phaseolus vulgaris)

4 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 4 Beet (Beta vulgaris) The leaf blades are dark green with reddish veins, and are attached to long reddish upright leaf stems that form a rosette at their base. The edible root is round, somewhat top-shaped and deep red in color, sometimes yellow. The seed is tan with a rough corn cob appearance, similar to chard. See Figure 6. Broccoli (Brassica oleracea, Italica group) The plants are cauliflower-like, bearing heads which are clusters of deep green flower buds. Heads are cut with a portion of the tender stalk before the buds open into tiny flowers. Leaves are similar to collards, but much smaller. Seeds are similar to cabbage. See Figure 7. Figure 6. Beet (Beta vulgaris) Figure 7. Broccoli (Brassica oleracea, Italica group)

5 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 5 Brussels Sprouts (Brassica oleracea, Gemmifera group) The plants are upright with a single stalk thickly set with small, firm, cabbage-like heads. Leaves are similar to broccoli and cauliflower, but more circular in shape. Seeds are similar to cabbage. See Figure 8. Cabbage (Brassica oleracea, Capitata group) Large, round, glossy leaves are cupped into large, round, sometimes pointed, firm heads. Color may be dark green, yellowish green or deep red. Leaf texture may be smooth or crinkled. Brownish-black seeds are round and about the size of bird-shot pellets. See Figure 9. Figure 8. Brussels Sprouts (Brassica oleracea, Gemmifera group) Figure 9. Cabbage (Brassica oleracea, Capitata group)

6 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 6 Carrot (Daucus carota var. sativa) Yellowish orange roots vary in shape from long cylindrical to short blunt. The leaves are deeply cut with a lacy appearance. Seeds are small, straw to brown in color, flat on one side and curved on the other, with 4 to 6 ridges on the curved side, similar to celery except much larger. See Figure 10. Cauliflower (Brassica oleracea, Botrytis group) Long, tapering, cabbage-like leaves surround a central, terminal, fleshy, creamy white, tightly-formed head similar to broccoli, though individual flower buds are not present. There are green-headed and purpleheaded varieties. Cauliflower seeds resemble those of cabbage. See Figure 11. Figure 11. Cauliflower (Brassica oleracea, Botrytis group) Figure 10. Carrot (Daucus carota var. sativa)

7 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 7 Celery (Apium graveolens var. dulce) Flat, notched, yellowish-green leaves are attached to crisp, fleshy, smooth-ribbed leaf stems and are joined at the base to form long cylindrical stalks. The striped seeds are very similar to carrot seeds, but much smaller. See Figure 12. Chard, Swiss (Beta vulgaris, Cicla group) The leaves are large, smooth, beet-like and grow upright from a central crown. Each leaf has a long, white, fleshy petiole or stem. Color varies from medium to deep green. One variety has deep red stems and midribs. Seeds are corky, similar to beet seeds. See Figure 13. Figure 13. Swiss Chard (Beta vulgaris, Cicla group) Figure 12. Celery (Apium graveolens var. dulce)

8 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 8 Chayote (Sechium edule) This cucurbit has climbing vines and leaves resembling the cucumber. The light-green pear-shaped fruit, which contains a single flat edible seed, may weigh as much as 2-3 pounds (average is 8 ounces). Fruits are pale green to dark green, slightly flattened, sometimes grooved and prickly, but usually smooth. Flowers are large, yellow and cucumber-like. See Figure 14. Cabbage, Chinese (Brassica campestris, Chinensis or Pekinensis group) Long, cylindrical or round upright heads are formed by tightly bunched leaves with large, fleshy midribs. The base of the head resembles celery and leaves are similar to mustard. Bok Choy is a non-heading type with several fleshy, white leaf stalks tipped with a glossy dark-green leaves. Seeds are round and cabbage-like. See Figure 15. Figure 15. Chinese Cabbage (Brassica campestris, Chinensis or Pekinensis group) Figure 14. Chayote (Sechium edule)

9 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 9 Chives (Allium schoenoprasum) Small, dark green, onion-like plants that grow in clumps. Leaves are very thin, tubular and hollow, resembling small green onions but without characteristic onion odor. Plants are non-bulbing. See Figure 16. Collards (Brassica oleracea, Acephala group) The plant does not form a head. Glossy, blue-green, cabbage-like leaves are attached by slender stems to an upright, single, round stalk which may reach several feet in length. Seeds resemble those of cabbage. See Figure 17. Figure 16. Chives (Allium schoenoprasum) Figure 17. Collards (Brassica oleracea, Acephala group)

10 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 10 Cucumber (Cucumis sativus) The plant is vining with large, lobed, green, bristly leaves and long stems. Fruits are elongated, cylindrical, yellow-green to dark green and either spiny or smooth. Size is variable, depending on variety. The lemon cucumber is almost round and bright yellow in color. Flowers are small, yellow and somewhat cupped. A female flower has a tiny cucumber-like appendage which is the undeveloped ovary. Seeds are creamy-white, flat, buttonhole shaped, tapering at both ends and about 3 times longer than wide. See Figure 18. Eggplant (Solanum melongena) The plant is large, upright and branching. Leaves are broad, smooth and slightly fuzzy. Stems are prickly, especially near the leathery green cap at fruit attachment. Fruits are oblong to round and may be green, white, yellow, bronze, orange, purple or most commonly black. Some varieties have small (1-inch diameter) fruits, while most average about 1 pound. Flowers are small, somewhat star-shaped and lavender in color. Seeds are very similar to pepper seed but are smaller and darker in color. See Figure 19. Figure 18. Cucumber (Cucumis sativus) Figure 19. Eggplant (Solanum melongena)

11 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 11 Endive (Cichorium endivia) The plant has upright to spreading growth similar to leaf lettuce but does not form a head. Leaves are curled, deeply cut and fringed, with white to pale green midribs. The broadleaf type is called escarole. Seeds are elongated, straight, and slender. See Figure 20. Garlic (Allium sativum) The plant is bulbing and onion-like in appearance except for green leaves which are flat. Bulbs may be separated into sections (cloves) and have a distinct, pungent odor and white to purplish color. See Figure 21. Figure 20. Endive (Chichorium endivia) Figure 21. Garlic (Allium sativum)

12 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 12 Kale (Brassica oleracea, Acephala group) The leaves are the same general size as collards, but with very frilled margins. Color is deep green and texture very coarse and crisp. Some ornamental varieties show colorful combinations of red, white, and green. Seeds are cabbage-like. See Figure 22. Kohlrabi (Brassica oleracea, Gongylodes group) The leaves rise from turnip-like enlargements of the stem just above ground level. This swollen stem is light green or purple in color. Leaves are similar to collards, but smaller. Seeds are cabbage-like. See Figure 23. Figure 22. Kale (Brassica oleracea, Acephala group) Figure 23. Kohlrabi (Brassica oleracea, Gongylodes group)

13 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 13 Leek (Allium porrum) The plant is very similar to a large green onion. Leaves are smooth and flat and are arranged in a fan-like fashion spreading in 2 directions. Unlike garlic, there is very little bulb development. Seeds are black and onionlike. See Figure 24. Lettuce (Lactuca sativa) The specimen shown may be any of the following types. Crisphead Large firm and round heads are surrounded by broad green wrapper leaves. Leaf Heads are loosely formed with leaves varying greatly in color (red, bronze, yellow, green), size and shape (wavy, notched or frilled). Butterhead Heads are soft, velvety smooth, surrounded by green wrapper leaves. Romaine (Cos) Leaves with prominent central ribs are gathered in a loose fashion to form an upright head similar to Chinese cabbage. Lettuce seeds are small, tapered at each end and may be straw or black in color. See Figure 25. Figure 24. Leek (Allium porrum) Figure 25. Lettuce (Lactuca sativa)

14 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 14 Muskmelon (Cucumis melo) The plant is vining, but non-climbing. Leaves are lobed, similar to cucumber, but not as angular. Fruit is round to oval, sometimes ribbed, sometimes with a netted surface and has interior seed cavity. Flesh may be orange or green. Seed is similar to cucumber seed, but a little larger and more orange in color. See Figure 26. Mustard (Brassica juncea var. crispifolia) The plant is erect, 1-3 feet tall, and leafy. Leaves may be elongated or broad with smooth margins or margins may be notched or curly. Texture is lighter than collards and midrib light green and not as fleshy as Swiss chard. Seeds are similar to cabbage but smaller. See Figure 27. Figure 26. Muskmelon (Cucumis melo) Figure 27. Mustard (Brassica juncea var. crispifolia)

15 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 15 Okra (Hibiscus esculentus) Fruit or pods are pointed at the blossom end, white to dark green, ribbed or smooth, spiny or spineless. Leaves are broad, notched and fuzzy. Seeds are almost round and dark gray in color with a seed stem scar. Seeds are about buckshot size. Large conical-shaped, light-yellow flowers are violet at the petal base. See Figure 28. Onion (Allium cepa) Onions grow as single plants or in bunches. Leaves are slender, dark green and tubular, become red, white, yellow or purple and thickened or bulbous at the base. The base varies from pencil size to round, oblong, topshaped or flat. Fibrous roots extend from the center of the base. Seeds are small and black resembling tiny chips of coal. See Figure 29. Figure 28. Okra (Hibiscus esculentus) Figure 29. Onion (Allium cepa)

16 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 16 Parsley (Petroselinum crispum) The plant is low growing with dark green, curly or smooth foliage of soft, delicate texture. Leaves, which arise from a central crown, are celery-like except they are borne on very slender, green stems. One type has a long slender, white tap-root. Seeds are similar to carrot. See Figure 30. Parsnip (Pastinaca sativa) Long, smooth, tapering, yellowish-white, carrotshaped roots are the edible portion. The foliage is deep green and similar in size and shape to broadleaf parsley. Seeds are round, flat, papery thin and brown to tan in color. See Figure 31. Figure 30. Parsley (Petroselinum crispum) Figure 31. Parsnip (Pastinaca sativa)

17 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 17 Pea, English (Pisum sativum) English pea plants are vining with roundish green leaves attached to slender stems at nodes. Curling tendrils occur at tips of branches. Pod stems arise at leaf nodes producing 1 or 2 pods each. Pods are plump with 5-10 round green seeds per pod, or flat with tiny undeveloped seeds. See Figure 32. Pea, Southern (Vigna unguiculata) Plants are bean-like, sometimes bush and often vining, with long trailing tendrils. Green leaves are trifoliate, round and pointed, and glossy-smooth. Pods are long, slender, pointed, and variously colored from yellow to green, purple, and black. Seeds are plump, not as flat as beans, and are many-colored. Seed coat and eye color ranges from black to green, pink and purple. Roots, like beans, have nodules. See Figure 33. Figure 32. English Pea (Pisum sativum) Figure 33. Southern Pea (Vigna unguiculata)

18 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 18 Pepper (Capsicum annuum) The plants are much branched with glossy green (sometimes purple) leaves. Fruits are hollow pods with many white, flat, roundish seeds attached to the central core. There is much variation in size, shape (from long, thin to large, roundish), color (green, red, yellow) and taste (from mild to hot). Flowers are small (½-inch diameter) pale yellow to white, with the corolla tightly held by a green calyx. See Figure 34. Potato, Irish (Solanum tuberosum) The leaves are compound, soft green in color with a slightly rough texture. Edible tubers are oblong to round in shape, red, green or brownish in color and smooth skinned with slight indentions (eyes). Small (½inch diameter) flowers range from white to purple. Fruits resemble tiny green tomatoes. See Figure 35. Figure 35. Irish Potato (Solanum tubersoum) Figure 34. Pepper (Capsicum annuum)

19 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 19 Potato, Sweet (Ipomoea batatas) The plant is a trailing vine with heart-shaped or deeply notched, glossy green leaves that may have a reddish tint. The edible roots vary in shape from long, slender to round with most being pointed at one or both ends. Root color may be cream, red, yellow, or purple. Flowers are typical morning-glory shape. See Figure 36. Radish (Raphanus sativus) The edible roots are spherical or elongated, may be red, pink, white or black in color. A rosette of fuzzy green leaves on slender stems grows from the top of root. The seeds are off-round, rose-colored, very hard, about size of match head. Some of the large winter radishes may reach 20 pounds or more. See Figure 37. Figure 36. Sweet Potato (Ipomoea batatas) Figure 37. Radish (Raphanus sativus)

20 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 20 Rutabaga (Brassica napus, Napobrassica group) The edible roots are smooth, larger than turnips, slightly oblong and white or pale yellow with or without purple at the top. The leaves are collard-like. Seeds are similar to cabbage. See Figure 38. Spinach (Spinacia oleracea) The plants are compact, upright to slightly spreading with tender dark green leaves forming a rosette. Leaves are glossy, may be smooth or crumpled and are usually pointed. Seeds are straw colored and similar in size to radish seed. Seed shape varies from round, smooth to prickly, pointed. See Figure 39. Figure 38. Rutabaga (Brassica napus, Napobrassica group) Figure 39. Spinach (Spinacia oleracea)

21 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 21 Squash, Butternut (Cucurbita moschata) Fruits are very firm with tough outer skin making them suitable for storage. The beige-yellow fruits average 1-3 pounds and have a hollow seed cavity. Fruits are usually bell-shaped, but sometimes blockyround. Tan seeds are flat with indistinct edges. See Figure 40. Squash, Zucchini (Cucurbita pepo) Fruits are thin-skinned with solid, crisp succulent interiors. There is no seed cavity. Fruits are elongated, somewhat larger at the blossom-end, and range in the color from dark green to bright yellow. Some are striped while others are solid color. The large, yellow flower blossoms are both male and female. While the zucchini grows on a bush, the stems may appear viny at times. Leaves are large, deeply notched, and show a mottling of light green on a darker green background. The white, flat seed has a double margin-ring, typical of all pepo types. See Figure 41. Figure 40. Butternut Squash (Cucurbita moschata) Figure 41. Zucchini Squash (Cucurbita pepo)

22 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 22 Sweet Corn (Zea mays) The plant is upright, often growing to a height of 8 feet or more. The 1-2 inch diameter stem has several internodes which are nearly smooth in the upper part, but somewhat grooved lower on the plant. Leaves, called "blades," are long, sharp-edged, pointed and covered with hairs on top. Ear shoots develop at the base of internodes. The ear (female flower) is wrapped with leaves and contains a slender "cob" covered with rows of kernels (seeds), each attached to a threadlike "silk." The male flowers are in the tassel at the top of the stalk. The seed kernel is plump and smooth when fresh, but may be hard and wrinkled when dried. Seed color varies from white and yellow to hues of red. See Figure 42. Tomato (Lycopersicon esculentum) The plants are succulent, fuzzy-stemmed, bushy or vining. Leaves are compound, green and soft-textured. Fruits vary in shape (round, pear, oblong); in color (red, pink, yellow, green, white); and in size (cherry size to 1 pound or more). The seed is small, fuzzy, tan in color and resembles eggplant and pepper seed. Flowers are small (½-inch diameter or less) with yellow open corolla attached to a green calyx. See Figure 43. Figure 43. Tomato (Lycopersicon esculentum) Figure 42. Sweet Corn (Zea mays)

23 Florida 4 H Horticulture Identification and Judging Study Manual Vegetables Page 23 Turnip (Brassica rapa) Both tops and roots are edible. Leaves are green and fuzzy, notched but not curly, and attached to slender succulent stems that often show purple coloration. Roots are globular or flat and all white or white with a purple top. The flesh is smooth, crisp and white. Seeds are cabbage-like. Turnips most closely resemble radish and mustard. See Figure 44. Watermelon (Citrullus lunatus) The plants are vines with deeply notched leaves and many tendrils. Fruits range in shape from oblong to round and vary greatly in size. Exterior color is light to dark green and may be striped or solid. Interior is white when immature, turning red, pink or yellow at maturity. Seeds are oval, flat and smooth varying in color from creamy white to speckled to black. See Figure 45. Figure 45. Watermelon (Citrullus lunatus) Figure 44. Turnip (Brassica rapa)