Part 22

Ragweed. Lyre-Leaved Parthenium (Parthenium lyratum) blooms from early spring until fall in Southwest Texas. This is a smaller plant than the common parthenium (Parthenium hysterophorus), which is widespread in the Gulf States and tropical America. The latter is a widely branched plant two to three feet high and grows in dense masses. They have similar flower clusters with small heads of greenish-white flowers. Neither of these is the ragweed or bloodweed commonly associated with hay fever; however, the common parthenium is listed as a poisonous plant. Wild quinine or feverfew (Parthenium integrifolium), used as a pioneer drug to relieve fever, has been reported from the state.

Several shrubby partheniums are found in West Texas. The most important member of the group is the silver-leaved guayule or rubber plant (Parthenium argentatum), found in West Texas and Mexico. It is a commercial source of rubber but is not yet profitable, as the plants are of slow growth.

Common Sunflower (Helianthus annuus) has been known in cultivation for many years but is considered native from Minnesota to Texas and Mexico. It is the state flower of Kansas. The stout, erect stems are widely branched above the base and are very sticky, 2-10 feet high. The flower heads, 3-6 inches broad, have many yellow ray flowers about an inch long and numerous tubular disk flowers. It is grown commercially for its fiber and seeds. The seeds make an excellent food for poultry and furnish an oil used in making soap, candles, and salad dressing.

Two other sunflowers are widely distributed in the state. The orange sunflower (Helianthus cucumerifolius) grows in the sandy post oak belt, and the blue-weed (Helianthus ciliaris) is very abundant in West Texas. The latter is a low, branching perennial which is poisonous to sheep.

Texas Coreopsis (Coreopsis nuecensis) was first described from plants found on the lower part of the Nueces River. It is quite widespread on the southern coastal prairie from March to May. It may be distinguished from other annual species of coreopsis by the circle of reddish-brown marks near the base of the yellow rays. The leaves are mostly basal and long-stalked.

Golden Wave. Drummond’s Coreopsis (Coreopsis drummondii) has showy, long-stalked heads, about 2 in. broad. They are borne on widely branched plants about a foot high. The leaves are divided into broad segments, and both leaves and stems have scattered soft hairs. It is very abundant on sandy coastal prairies in April and May and is well known in cultivation.

Calliopsis. Prairie Coreopsis (Coreopsis cardaminefolia) is a late-blooming annual plant, the flowers appearing in North Texas about the middle of June. It ranges from Kansas to Mexico and Louisiana. This plant greatly resembles the golden coreopsis (Coreopsis tinctoria), which is abundant on the coastal prairies in March and April. “Coreopsis” is derived from the Greek, meaning “bug-like,” and refers to the seed. The plants are often called tickseeds.

False Coreopsis. Fine-Leaved Thelesperma (Thelesperma trifidum) is sometimes erroneously called black-eyed Susan. It closely resembles the coreopsis when the flowers are in the bud stage. The flowers may readily be distinguished from those of the coreopsis because the ray flowers are not marked with a brown spot at the base and are divided into three equal lobes at the tip. The ray flowers of the coreopsis are commonly divided into four lobes, the two lateral being shorter than the two middle lobes. The leaves are finely divided into long, narrow segments.

This is one of the most widely distributed plants on the prairies from Mexico to Colorado, South Dakota, and Missouri. The yellow of Central Texas landscapes in late April and May is due to thelesperma. Scattered plants continue to bloom through the summer and fall. The plants grow 1-2 feet high and become widely branched. The disk flowers are a reddish-brown.

Plains Paper-Flower (Psilostrophe villosa) is another western plant which has foliage covered with a dense white woolly coat of hairs. This hairy coat is a plant device for enabling it to withstand dry growth conditions. There are only three or four ray flowers which are much broader than long and are conspicuously three-lobed. The heads are densely clustered on short branches at the top of the stems, which are from six inches to two feet high.

Near El Paso is found the lovely western paper-flower or Cooper’s psilostrophe (Psilostrophe cooperi). It grows in spreading clumps about two feet broad and bears long-stalked heads over an inch wide. As the flowers are bright yellow and remain lovely for months, they are often gathered for winter bouquets. Eventually they become white and papery. Psilostrophe tagetinae has somewhat larger flowers than the plains paper-flower and is probably the most abundant paper-flower in the state. When cattle graze upon it for several weeks, they suffer a slow poisoning. The marigold is a close relative, both the African and French marigolds being derived from Mexican plants introduced into cultivation about 1573.

Actinella Daisy. Four-Nerved Daisy (Tetraneuris linearis) grows with small tufts of narrow leaves from a woody perennial root. The heads, which are borne on stalks 2-8 inches long, close at night. The plants often bloom throughout the year in Central and South Texas. They grow on rocky limestone hillsides in Texas and New Mexico. The broad, four-nerved ray flowers form a close border around the conic disk, which is covered with small yellow tubular flowers. The veins of the outer flowers, which give rise to the scientific name, are sometimes purplish.

Silver-Leaf Daisy (Bahia dealbata) is common in the western part of the state into Arizona and Mexico. It grows 1-2 feet high from a woody perennial root and often blooms throughout the year. The long-stalked heads are a little over an inch broad with 9-12 yellow ray flowers. On the silvery-gray stem the few leaves are commonly opposite, broad and short-stalked, with a pair of lateral lobes near the base.

Huisache Daisy (Amblyolepis setigera) is so called because it often forms a carpet of gold under huisache (pronounced wee satch), mesquite, or other chaparral bushes in Southwest-central Texas from March to June. It is also called honey or butterfly daisy and clasping-leaved bitterweed. It has the strong scent common to the bitterweed, but is fragrant in drying. The plants are often loosely branched, growing 6-12 inches high, and the yellow heads are about 1½ inches broad.

Sneezeweed. Fine-Leaved Bitterweed (Helenium tenuifolium) is often found in pastures which have been over-grazed. It has a strong-scented foliage which gives milk a bitter flavor. The ball-shaped mound of disk-flowers (reminding one of camomile) and the few drooping ray flowers, which have a broad 3-toothed edge and a narrow base, are characteristic of the group. The seeds are small and are said to cause sneezing when they are thrown into the air. The bitterweed blooms from May to October and ranges from Texas to Virginia.

Indian Blanket. Firewheel. Beautiful Gaillardia (Gaillardia pulchella) is the pride of Texas prairies. The landscape becomes a vivid red and yellow in April, May, and early June when the firewheels are in bloom. It is a highly-prized cultivated plant, and many varieties have been developed. There are several species of gaillardias and many of them are native to Texas. The beautiful one is the most widespread, ranging from Texas to Louisiana, Nebraska, Arizona, and Mexico. The gaillardias are named for a French botanist, Gaillard.

The heads are usually two or three inches across and are long-stalked. Each head has 10-20 broad ray flowers which are sometimes all red but usually are marked with a brilliant yellow across the three lobes. The upper leaves are lance-shaped, and the lower are oblong and marked with a few teeth or lobes. It is an annual plant which is widely branched and grows one to one and a half feet high.

Tiny Tim. Spreading Thyme-Leaf (Thymophylla polychaeta) is found on sandy prairies from South Texas to Mexico and New Mexico. There are several thyme-leaf species in the state. They may be recognized by their scented foliage and the cup-like base of the flower heads, the bracts of the head being marked with large yellow or orange glands. There is something appealing about the tiny Tim, as the name would indicate. The branching stems with their lacy green leaves form rosettes which are dotted with the yellow daisy-like flowers.

Dwarf Thyme-Leaf. Tiny Tim (Thymophylla pentachaeta) clings to cliffs and rocky hillsides. It is a perennial plant with short stems four to six inches high. The leaves are short and needle-like and are borne in dense clusters around the stem. The flower heads are about half an inch broad. Tiny Tim ranges from Texas to Arizona and Mexico.

Dog Fennel. Mayweed. Dog’s Camomile (Anthemis cotulla) is a strong-scented herb widely scattered in America, naturalized from Europe. It is very abundant in sandy soil in the eastern part of the state. The plants are widely branched and bear numerous heads about an inch broad. The rays are broad and wide and the disk flowers are yellow. It begins to bloom in Texas in March, but the plants are at their best in May and June. It is close kin to the European camomile, which is used medicinally, a soothing tea being made from the dried ball-shaped heads of yellow flowers.

Closely related to camomile and yarrow are the artemisias, which include many species known as dusty miller, wormwood, sage-brush, and purple sage. The silvery wormwood or thread-leaved sage-brush (Artemisia filifolius) is very abundant in the sandy areas of West Texas and throughout the Rocky Mountain States and Mexico. It blooms from July to October.

Yarrow. Woods Milfoil (Achillea millefolium) was named in honor of Achilles, to whom is attributed the discovery of its healing properties. It is supposed to stop bleeding, relieve spasms, produce sweating, and act as a tonic. The woods milfoil is widely distributed in woods in the United States, Europe, and Asia. It makes a nice garden plant, for the lacy fern-like leaves remain green all winter. The stems grow one to two feet high and are topped by the flat flower-cluster. The ray flowers are white or sometimes pale pink or lavender, and the disk flowers are pale yellow.

Plains Yarrow. Woolly Milfoil (Achillea lanulosa) grows in moist places on the plains from Texas to Canada, Mexico, and California. It is very much like the woods yarrow but differs in that it has fewer gray-green leaves and round-topped flower clusters. Its blooming season is a little later than that of the woods yarrow, which blooms in April and May.

Texas Squaw-Weed. Clasping-Leaved Groundsel (Senecio ampullaceus) is an annual plant which grows so abundantly on the sandy prairies of Texas that it forms a carpet of gold for miles and miles. It is one of the earliest spring flowers to bloom in such showy profusion. The plants commonly grow 1½-2 feet high, being branched above and forming flat-topped flower-clusters which are often a foot broad. When quite young, the plants are densely white-woolly but become smooth and shining with age. The irregularly toothed leaves are 3-6 inches long and have a broad clasping base. The groundsel belongs to one of our largest groups of plants, some 1200 species being widely distributed over the earth.

Fine-leaved or woolly groundsel (Senecio filifolius) has woolly leaves divided into narrow segments. The large heads are often in bloom throughout the year in West Texas and New Mexico.

American Star Thistle. Basket Flower (Centaurea americana) is often called spineless thistle because the leaves do not bear spines as do the leaves of its close relative, the purple thistle. It is also known as powder puffs, sweet sultan, and “cardo del valle.” It is a hardy annual which is widely cultivated. Basket flower is the name under which it is known in cultivation—a name which refers to the stiff, straw-colored bracts of the flower head. These bracts are not spiny but are divided at the tip into finger-like projections.

Before the flowers are fully opened, the heads resemble a shaving-brush, and this is a common name frequently applied to this and other thistles. All the flowers are tubular and divided into five long narrow lobes. In one variety the fully-opened flower cluster has an outer border of numerous lavender flowers with cream-colored flowers in the center. There is another variety which has outer flowers a deep rose or reddish purple and center flowers pale pink or rose; sometimes there is little difference in shade between the inner and outer flowers.

The stems are usually branched and grow about two feet high. They are marked with wing-like ridges and are covered with the overlapping, ascending leaves. In Texas the flowers begin to bloom in May and continue into June, being at their best the first week in June. After the flowering season, the foliage becomes yellow and dried, and the old stalks remain conspicuous in the fields for several months. The star thistle is found on plains from Missouri to Louisiana, Mexico, and Arizona. The variety which has reddish-purple flowers is very abundant in the vicinity of Waco and Fort Worth.