KANSAS SUNFLOW RS H.A. STEPHENS THE KANSAS SCHOOL NATURAL/ST. Emporia State University Emporia, Kansas 1981
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1 KANSAS SUNFLOW RS by H.A. STEPHENS THE KANSAS SCHOOL NATURAL/ST Emporia State University Oct. Emporia, Kansas 1981
2 The Kansas School Naturalist Published by Emporia State University Prepared and Issued by The Division of Biological Sciences Editor: Robert F. Clarke Editorial Committee: Gilbert A. Leisman, Tom Eddy, Robert J. Boles, John Ransom The Kansas School Naturalist is sent upon request, free of charge, to Kansas teachers, school board members and administrators, librarians, conservationists, youth leaders, and other adults interested in nature education. Back numbers are sent free as long as supply lasts, except Vol. 5, No.3, Poisonous Snakes of Kansas. Copies of this issue may be obtained for 25 cents each postpaid. Send orders to The Kansas School Naturalist, Division of Biological Sciences, Emporia State University, Emporia, Kansas, The Kansas School Naturalist is published in October, December, February, and April of each year by Emporia State University, 1200 Commercial Street, Emporia, Kansas Second-class postage paid at Emporia, Kansas. "Statement required by the Act of August 12, 1970, Section 3685, Title 34, United States Code, showing Ownership, Management and Circulation." The Kansas School Naturalist is published in October, December, February, and April. Editorial Office and Publication Office at 1200 Commercial Street, Emporia, Kansas The Naturalist is edited and published by Emporia State University, Emporia, Kansas. Editor, Robert F. Clarke, Division of Biological Sciences
3 3 KANSAS SUNFLOWERS by H.A. Stephens The sunflower is an "old timer" in the history of the people of the Americas. It was used by the Aztecs as a food and as an object of art, for their temples were adorned with solid gold figures of the sunflower. Apparently it is not known for sure whether the plant was native only in the region occupied by the Aztecs and brought to our present country by wandering tribes, or if it was native to all of North America. However, it is known that the Indians of Central United States were cultivating the sunflower over a thousand years ago. In Missouri and Arkansas, archaeologists have found urns containing sunflower seeds quite like the striped seeds of the large garden sunflower of today. And while excavating old Indian dwellings here in Kansas, dating back to the year of 800, archaeologists have found charred seeds almost identical with the black, oil-rich sunflower seeds often found in commercial bird feed. And yet, Cecil Howes, a staff writer for the Kansas City Star, wrote in 1948 that a missionary who came to Kansas in 1937 found no sunflowers here and that the early explorers and settlers made no mention of them in their journals and diaries. On the other hand, W. C. Stevens states In his book "Kansas Wild Flowers" that the early French missionaries found the Indians of North America were using sunflower seeds for food and for oil - even for hair oil! He goes on to say that on July 17, 1805, the Lewis and Clark explorers entered in their journal that the sunflower was common and "The Indians of the Missouri" made great use of of it, especially those who did not cultivate maize. To me, Stevens' statements are the more convincing because I have personally worked with sunflower seeds from diggings dated back a thousand years. The history of the sunflower would be a good project for some student interested in archaeology, history,
4 4 or botany. Today, both the striped and the black sunflower seeds are us ed in nearly all commercial feeds for wild birds. But seeds of the native sunflower are seldom used, probably because their small size makes it unprofitable. However, in nature, they furnish a lot of winter food for birds, such as the goldfinch, siskin, and the native sparrows. People also use the large sunflower seeds for food not as the Indians did, but as salted seeds purchased in small bags. In some areas of the United States, large fields are planted to sunflowers and most of these seeds are used for bird feed, salted seeds, or for the extraction of oil for cooking, soap, and other products. The leftover cake from oil extraction is used as feed for livestock and poultry. The stems and leaves of the plant may be shredded and made into silage. And we must not forget the use of the sunflower for its beauty along roadways or in gardens. T he sunflower probably gets its name from the radiating rays around a common center, but contributing to the name is the story that the flowers face the sun, a story backed b y observation and scientific knowledge. Most house plants when placed near a window will bend toward the light and people often give the explanation that they are "reaching" for the light, and perhaps they are. But it is known that in some plants the side of the stern which receives the most light will grow slower than the darker side. This growth may well be associated with moisture, too. The bending toward the light stops when the stem reaches maturity and is no longer capable of growth, so the turning toward the sun has stopped by the time the seeds have matured. As most people know, the sunflower is the state flower of Kansas, but the statute bringing this about does not say which sunflower. It merely states "th at the helianthus or wild native sunflower is hereby made, designated and declared to be the state flower and floral emblem of the state of Kansas. " Since Helianthus annuus is the most abundant and widespread of the sunflowers and at the same time is one of the strongest and most adaptable to a habitat, it is assumed to be the species intended by the Legislators. Even more controversial is
5 5 history of why it was chosen, for it was not selected by the school children, as was the meadowlark, our state bird. According to an article publi hed in the Kansas City Star on August 16, 1948, back in 1880 Noble Prentis, a well known writer and editor, wrote in the Atchison Ch ampion that the sunflower ought to be m ade the emblem of our state. Nothing further was done about it. But m 1901, George P. Morehouse, a Senator from Council Grove, attended the big annual rodeo and picnic in Color ado Springs, where each near by state had a special day. The Missourians cam e out wearing buttons "You 'll have to show me." But the Kansans had made no su c h preparations, so Morehouse and his friends borrowed a wagon and team, went out on the prairies east of Colorado Springs and brought back a wagon load of sunflowers. Each Kansan registering at the event was given one of the flowers to wear at the meeting. T his started the ball rolling, and in 1903 the Legislature voted to make the sunflower our state emblem. With all this history, we had better find out what a sunflower really is, and this will require a few technical terms. As most people know, plants and animals are divided into families; that is, those that are alike in structure are listed together as a family. These families are divided again - or even again and again and eventually the genus group is isolate d a n d e ach closely associated member of it is given a species name. So the sunflow r belongs to the Asteraceae (Compositae) family and to the genus Helianthus. It is to this genus that the name sunflower really belongs. W e have eleven species of Helianthus in Kansas. Two of them will not be discussed. Helianthus strumosus L., found in only four counties in eastern Kansas; and Helianthus ciliaris DC., a weedy plant from the Southwest and rare in western Kansas. Of course the word weed has many meanings, but to me it is an aggressive plant which grows to the detriment or exclu sion of plants purposely grown by man. In some cases, th e sunflower would clearly fit this definition. The best way to defin e a genus, in this case Helianthus, is to give a few of its characteristics, and to understand some of them you m ay have to refer to the glossary
6 6 or the drawing. 1. Flowers in heads with two types of flowers, disk flowers in the center and ray flowers around the outside. 2. The disk flowers are perfect and fertile, the rays not fertile. 3. A chaff is at the base of each seed (achene). 4. Achenes more or less 4-angled, not awned. 5. Involucral bracts separate, not united. 6. Receptacle flat or only slightly rounded. 7. Leaf petioles not continued as a wing or ridge down along the stem. Diagrammatic Section Through a Sunflower Head; A. Ray Flower B. Disk Flower C. Involucral Bract D. Recptacle B \j C D
7 7 KEY TO HELIANTHUS SPECIES IN KANSAS 1. ANNUALS 2. Stem course; leaves long, broadly ovate; disk brown, no white center; involucrai ovate, narrowed to a annuus I 2. Stem slender; leaves small, narrowly ovate, disk brown with white center; involucra 1 bracts lanceolate, tapering to a / tip petiolaris 1. PERENNIALS 3. Disk flowers red-brown or purple-brown 4. Leaves narrowly linear... H. salidfolius /. 4. Leaves narrowly ovate, to the petiole I 3. yellow Leaves or nearly so 6. Leaves broadly heart-shaped base, pale I white-hairy.... moms 6. narrowly ovate, rounded or suddenly / tapered, scabrous... H. hirsutus 5. Leaves petioled 7. Leaves ovate,... H. I 7. Leaves lanceolate trough-shaped, recurved, without teeth; flowers on on stem...h. Leaves nearly drooping, sharply toothed; on long branches near top of... H. Ilr()ssc~se:rra
8 8 COMMON SUNFLOWER with ray flowers. This form may Helianthus annus L. occur in the wild plants, too. Found on roadsides, waste places, and broken areas in prairies; statewide. Plant coarse, 1-3 m high, usually with a central stem and many branches, rough to the touch. Leaves mostly alter nate; petiole 5-10 cm long; blade ovate, often heart-shaped, cm long, 7-20 cm wide, rough hairy, margin toothed. Flowers on the ends of branches through the plant; disk brown, 3-5 cm across, rays yellow, 3-5 cm long; involucral bracts broadly oval but abruptly pointed. seeds narrowly ovate in outline, slightly 4-angled, 4-5 mm long, 2.25 mm wide, mm thick, hairy, striate, dark brown and often mottled with darker brown. The two varieties commonly grown commercially or in home gardens are similar to the above, but much larger, coarser, and with only one flower on each plant. The larger one of these two has heads cm across and the seeds striped black and white, mm long, 5-9 mm wide. The smaller one has heads 6-10 cm across and the seeds are black, 6-11 mm long, 3-6 mm wide. There is also a "double" form in which the center is filled Helianthus annuus HeIianthus annuus
9 9 PLAINS SUNFLOWER Helianthus petiolaris Nutt. Found in sandy soil throughout the state, but rare in the eastern one-third. Plant slender, 0.5-l.5 m high, often bush-like because the lower branches may spread and ascend, the central stem being less pronounced; the stems covered with appressed hairs. Leaves mostly alternate; the petioles slender, 5-10 em long; blade narrowly ovate to deltoid, seldom heart-shaped at the base, 5-10 em long, 3-5 em wide, hairy, margin undulate. Flowers on branch ends, disk em across, brown with a whitish center due to the white chaff at the base of the disk flowers; rays yellow, em long; involucral bracts lanceolate, tapering to a tip. Seeds lanceolate in outline, pale brown with darker mottling, 4-5 mm long, l.2-2 mm wide, mm thick, 4-a, hairy. Helianthus petiolaris Helianthus petiolaris ASHY SUNFLOWER Helianthus mollis Lam. Found on dry sandy soil or sandstone hillsides in the eastern one-third of Kansas. Plant stiffly erect from a perennial rhizome; stem seldom branched, em high, leaves and stem whitehairy. Leaves opposite, sessile or nearly so; blade m ostly broadly ovate with heart-shaped base, 6-10 em long, 3-6 em wide, ascending, margin with low teeth. Flowers usually terminal and solitary but may be few at the top on short branches or peduncles; disk yellow, 2-3 em across; rays yellow, em long; involcral bracts lanceolate, the tapered tip often spreading, densely white-hairy. Seeds
10 10 lanceolate in outline, mm long, mm wide, mm thick, brown to nearly black, slightly 4- angled, few or no h airs. HAIRY SUNFLOWER Helianthus hirsutus Raf. Found in rocky soil along roadsides or open woods in the eastern one-third of the state. Plant erect from a perennial rhizome, m high, stem sim pie or occasionally b ranched near the top, stem scabrous. Leaves opposite, ascending, sessile or nearly so; blade lanceolate, 6-10 cm long, 2-5 cm wide, rough and hairy, margin toothed. Flowers solitary, terminal on the main stem or branches; disk yellow, cm across; rays yellow, cm long ; involucral bracts lanceolate, often with long tip. Seeds lanceolate in outline, 3-4 mm long, mm wide, about 0.6 mm thick, brown to H elianthus hirsutus
11 JERUSALEM ARTICHOKE Helianthus tuberosus L. Found in moist roadside ditches, on stream banks and waste places in the eastern two -thirds of the state. The rhizomes often with edible tubers on their ends. Plant m. high, scabrous, branching above the middle. Lower leaves opposite, upper ones alternate; petiole 3-8 cm long; blade broadly lanceolate to ovate, tapering at the base to a wing a long the petiole, cm long, 4-10 cm wide, rough hairy, margin toothed. Flowers on short branches in the upper one-third of the plant; disk yellow, cm across; rays yellow, cm long ; involucral bracts lanceolate, narrowed to a point and usually spreading outward. Seeds broadly lanceolate in outline, 5-6 mm long, mm wide, mm thick, 4-angled, dark brown, glabrous.... H.e.li.a.n.th.u. s.t.u.h.e.ro. s.u.s 11 MAXIMILIAN SUNFLOWER Helianthus maximiliani Schrad. Found in prairies and on roadsides, sandy or limestone soil throughout the state. Plant m tall; rhizome short and thick with one or more vertical stems from the same base. Leaves alternate; petiole cm long, ABOUT THE AUT HOR Steve Stephens, a native Kansan, retired from K.U. in 1976 and now resides at the Ross Natural History Reservation of.s. U. Among his most recent publications are Trees, Shrubs, and Woody Vines of Kansas, Woody Plants of the North Central States, and Poisonous Plants of the Central United States.
12 12 winged; blade lanceolate, trough-shaped and curved downward, scabrous, 5-18 cm long, cm wide, margin not toothed. The upper half of the central stem has many short, axillary branches with a flower on each, giving a columnar effect in the flowering section; disk flowers yellow, disk 2-3 cm across, rays yellow, 2-3 cm long; involucral bracts with a broad base suddenly n arrowed to a long curved tip. Seeds lanceolate in outline, 3-5 mm long, mm wide, about 1 mm thick, 4-angled, brown to nearly black or mottled, striate, glabrous. Helianthus maximiliani H elianthus maximiliani Helianthus grosseserratus Martens Found in ditches, on creek banks and waste places in moist soil in the eastern one-third of the state. Plant 2-4 m high, branching above ; stem glabrous, glaucous; often in dusters or colonies from a long, spreading rhizom e. L eaves alternate ; petiole slender, 1-4 em long, narrowly winged; blade lanceolate, drooping, cm long, 1-4 cm wide, m argin sharply toothed.
13 13 Flowers on slender branches or peduncles in the upper part of t e plant; disks ye llow, 1-2 em across ; rays yellow, 2-3 em long; involucrai bracts lance-linear, long pointed and spreading. Seeds laneeolate in outline, mm long, mm wide, I mm thick, dark brown, 4-angled, finely st -eaked or mottled, glabro s; occasionally eeds are p ale brown, streaked and mottled with dark brown. WILLOW-LEAVED SUNFLOWER Helianthus salicifolius A. Dietr. Found in dry soil, rocky hills or prairies, especially in limestone soils in the eastern one- third of Kansas. Plant m high from an elongated rhizom e, usually in olonies or clusters; stem glabrous, branching on the upper half or just at the top. Leaves alternate, numerous and crowded, curled downward ; petiole indefinite because the blade is narrowly linear, em long, 1-3 mm wide. Flowers on branch ends or long peduncles; disk brown or slightly purplish, em across; rays yellow, 1-3 em long; involucral bracts broad at base abruptly Helianthus grosseserratus Helianthus salicifolius
14 14 na rrowe d to a sub ulate, spreading tip. Seeds broadly lanceolate in outline, 5-6 mm long, m m wide, mm thick, brown to nearly black, often mottled, striate, glab rous. STIFF SUNFLOWER Helianthus rigidus (Cass.) Desf. Found in d ry prairies, especially rocky, clay soils in the eastern half of the state. Plant slender, m h igh, erect from rhizomes. Stem often simple but m ay be branched near the top, scabrous, leafy below but only a few leaves in the upper part, so the plant appears leafy with a long, n early n aked stem holding the flower. Leaves mostly opposite ; petiole winged, em long; blade lanceolate, 5-15 em long, 1-4 em wide, margin entire or with few low teeth, usually stiff hairy. Flowers single on the end of the central stem or on long, axillary peduncles; disk dark purple-brown, em across; rays yellow, em long; involucral bracts ovate, tightly appressed, usually with rounded tip. Seeds lanceolate in outline, mm long, mm wide, mm thick, 4-angled, dark brown, often mottled, striate, hairy. Helianthus rigidus The following genera of plants are sometimes mistaken for Helianthus. Characteristics given show why they are not sunflowers. Silphium, R osin weed or Compass plant rays are fertile. Berlandiers, no common n ame rays are fertile. Heliopsis, False sunflower rays fertile, receptacle conic. Ratibida, Coneflower receptacle conic or columnar. Verbesina, Wingstem... achenes flat, winged; stems usually winged. T helesperma, Greenthread involucral bracts united at base. Coreopsis, Tickseed... involucral bracts united at base; achenes flat. Rudbeckia, Black-eyed Susan receptacle conical.
15 15 GLOSSARY Achene. A dry, one-seeded fruit; the "seed" of the sunflower. Alternate. The leaves placed singly at different heights on the stem. Annual. Living only one year. Appressed. Lying close and parallel to a plant part. Awn. A bristle-like appendage, either short or long. Axil. The angle between a leaf and stem. Not a structure. Axillary. Located within the axil. Blade. The broad, flat portion of a leaf. Bract. A leaf-like structure directly below a flower or head of flowers. Chaff. A small, thin, dry bract, usually around the seed. Corolla. Each of the outer, yellow "petals" is really a corolla of three to five petals united into one; in the brown center, each individual part is a flower and with a lens the four or five points, which are the petals, of the corolla can be seen. Decurrent. Extending downward, as a leaf blade along (he petiole. Deltoid. Triangular. Disk. The central portion of the sunflower, usually brown. Disk flower. The small tubular or funnel -shaped flowers in the disk. Entire. Without teeth on the margin. Fertile. Capable of reproduction, the male flower having the pollen and the female having the cell which becomes the seed. Glabrous. Smooth, without hairs. Glaucous. Covered with a "bloom", a white, waxy substance which rubs off. Head. A dense cluster of sessile flowers. Involucral bract. One of the bracts below a flower or flower head. Involucre. The set of bracts beneath a flower Qr flower head. Lance-linear, Between lance shaped and narrow with parallel sides. Lanceolate. Shaped like a lance head. Linear. Narrow with parallel sides, like a narrow ribbon. Opposite. The leaves placed slightly on opposite sides of a stem and at the same height. Ovate. Egg-shaped. Pedicel. The stem of a single flower. Peduncle. The stem bearing a group of flowers. Perennial. Living three or more years. Perfect. A flower containing both stamens and pistils. Petiole. The stalk of a leaf. Ray. The flat, yellow strap-shaped "petal" of the sunflower. Receptacle. In composite flowers, the expanded end of a stem on which the many flowers are located. Rhizome. An underground stem from which the above-ground stems arise. Scabrous. Rough to the touch due to short, stiff hairs. Sessile. Without a stalk, fastened directly to another part of the plant. Subulate. Awl -shaped. Undulate. Wavy in an up and down direction.
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