Part 21

Dwarf White Aster (Chaetopappa asteroides) is a very small and wiry plant, growing two to ten inches high and becoming much branched with age. The small narrow heads with white rays and yellow disk flowers are less than half an inch broad. The leaves are narrow, commonly broader about the middle, and about half an inch long. The scientific name refers to the bristles on the seed. It is very abundant in sandy soil throughout the state and ranges to Missouri and Mexico. It blooms from March until early summer.

Blackweed. Roadside Aster (Aster exilis) is probably the least showy of the asters but is very abundant in Texas. It ranges from Kansas to Texas and Florida. The white, daisy-like heads may be noted against the dark-green foliage in roadside ditches, or it may appear as a violet haze along the highway. Although it is considered one of the common lawn pests in the fall, yet even there it is a thing of beauty; for when the slender stems are cut, numerous branches spread out from the base, and soon the grass is studded with the tiny white or lavender heads. Keepers of bees on the coastal prairie highly prize it as the source of their most palatable honey.

Spiny Aster (Aster spinosus) is quite similar to the roadside aster and has inconspicuous leaves which are sometimes reduced to spines. The flower heads are less than an inch broad with white outer flowers. It forms dense growths in river bottoms and along irrigation ditches and is especially abundant in the vicinity of El Paso.

Late Purple Aster (Aster patens) shows its lovely heads in October and November along the edges of post oak woods throughout the state. It is easily recognized by the short, broad, and roughened leaves on the wand-like stems. The illustration given is that of variety gracilis which is abundant in the vicinity of Fort Worth. Many asters are found in the state, but very few make a conspicuous floral display except along the coastal plain and river bottoms.

Tansy Aster. Dagger-Flower (Machaeranthera tanacetifolia) has leaves much like those of the spiny-leaved yellow aster, but the purple-flowered heads are much larger and very showy, 1-2 inches broad. The heads are surrounded by bracts with green spreading tips. The inner tubular flowers are yellow but soon turn reddish-brown. It ranges from Nebraska to Mexico and California. This is one of the loveliest flowers on the western plains, blooming from May to October.

Narrow-Leaved Baccharis. Oil Willow (Baccharis angustifolia) looks very much like the black willow, to which, however, it bears no relationship. The leaves of baccharis have a resinous texture, and the flowers appear in the late summer and fall. The pollen-bearing flowers are not borne on the same shrub with the seed-bearing flowers. The flowers, all small, inconspicuous, whitish, and tubular, are borne in a narrow head of ovate bracts which soon turn brown.

It is called the oil willow by some of the older residents because it is said to be an indicator of oil, just as the black willow is said to be a good indicator of water. It is also called brittle willow, false willow, and resin willow. It grows in brackish marshes throughout the state and may be found eastward to North Carolina. The soft white plumy bristles on the seed give the shrub the feathery appearance of the Yankee-weed. Along the coast in the southeastern part, the groundsel-tree or pencil-tree (Baccharis halimifolia) is a lovely sight in the fall.

Large Rabbit Tobacco (Filago prolifera) is a low plant less than six inches high with a few short branches at the top of the stem and sometimes a few at the base. The flowers are small and inconspicuous, being borne in woolly, rather flattened heads which are about half an inch broad. It blooms from January to June and ranges from Texas to South Dakota.

Small Rabbit Tobacco (Filago nivea) is a smaller plant but is more densely clothed with woolly hairs. The minute, ball-like heads are clustered together. Both of these plants are also known as poverty-weed, chewing gum, and ladies’ tobacco. Poverty-weed is a suitable name for them in the sheep-grazing section of Central Texas which has been heavily over-grazed. In many pastures they take the place of grasses as a ground cover. The leaves may be chewed for gum. The rabbit tobacco is closely related to the cudweeds and everlastings. The plantain-leaved everlasting grows in moist woods in East Texas.

Southern Marsh Fleabane (Pluchea purpurascens) grows only in marshes or in continually moist places. The flowers are more rose-colored than purplish, as the name would indicate, and the tawny bristles on the seeds soon give a brownish tint to the heads. It often grows in pleasing combination with the blue mist-flower. It ranges from Texas to Florida and tropical America and blooms in the summer and fall.

The plants are commonly about two feet high, the stems being unbranched below and very leafy. The broad leaves are pointed at the tip and narrowed into stalk-like bases except on the upper part of the stem. The leaf-margins are irregularly toothed. The fragrant flowers are borne in small oblong heads in a flat-topped cluster.

The cudweeds are closely related to the marsh fleabane. They are particularly abundant in the mountains of West Texas, the loveliest one being Wright’s cudweed or everlasting (Gnaphalium wrightii), which has white flowers and foliage.

Prairie Blackfoot Daisy. Mountain Daisy. Rock Daisy (Melampodium cinereum) is very abundant on limestone slopes and in dry soil from Texas to Arkansas, Kansas, and Arizona. The scientific name is from the Greek words meaning “black foot” and refers to the blackened roots and stalks.

Blackfoot Daisy (Melampodium ramosissimum) grows from a black woody base and has many branched stems which form a dense rounded mound one to two feet broad. After sufficient rainfall from early spring until winter, this mound is covered by the saucy heads of white daisy-like flowers. The heads are about three-fourths inch across and have an outer row of 8-11 broad white ray-flowers. This is the most vigorous one of the blackfoot daisies and makes an excellent plant for the rock garden. It grows in Southwest Texas. The seeds are enclosed in a thickened cornucopia-like floral bract which has a flaring rim and many warty projections.

Texas Star Daisy. Lindheimer’s Daisy (Lindheimera texana) shows its star-like flower heads early in the spring while the plants are low and the leaves are closely clustered. By June the plants are tall and widely branched above. This plant honors by its name Ferdinand J. Lindheimer, an early settler of New Braunfels and editor of the “Neu Braunfelser Zeitung.” Lindheimer began his collection of Texas plants in 1836 and continued until his death in 1879. With the assistance of Dr. George Engelmann of St. Louis and Dr. Asa Gray of Harvard University, Lindheimer’s collections between 1842 and 1852, representing more than 1400 species of plants, were classified and distributed to the leading herbaria of Europe and America. A part of this collection is owned by the University of Texas Herbarium.

Prairie Zinnia (Zinnia grandiflora) grows in low, rounded clumps from Kansas to Mexico and Arizona and blooms from June to September. The bright yellow ray flowers are nearly round and remain on the seeds. With age they become papery, and the yellow disk flowers turn reddish-brown. The common zinnia in cultivation was introduced from Mexico.

Cut-Leaved Daisy. Engelmann’s Daisy (Engelmannia pinnatifida) is closely related to the sunflowers but has the daisy habit of closing the flower heads at night and opening them in bright sunlight. It is one of the commonest plants on prairies from Kansas to Louisiana and Arizona and grows in dense patches along roadsides and pastures from April to July.

The rough, hairy plants grow one to three feet high and are topped by broad clusters of long-stalked, showy yellow heads which are 1½-2 inches broad. The divided leaves are short-stalked on the lower part of the stem and on the upper part have clasping basal lobes.

This daisy honors the name of Dr. George Engelmann, an eminent botanist of St. Louis, who died in 1884.

Niggerhead. Thimble Flower (Ratibida columnaris) is also called Mexican hat, niggertoe, “gallitos,” long-headed or prairie cone-flower, and black-eyed Susan, though the last term is erroneously used. It is a very handsome plant, which is widely distributed on plains from Southern Canada to Arizona, Texas, and Tennessee. In South Texas it is at its best in April and May; in North Texas it is lovely in late May and June.

Numerous erect stems grow from a woody perennial root and are commonly two to two and a half feet high. The long-stalked heads terminate the branches. The leaves are finely divided into long narrow segments, both leaves and stem being somewhat rough.

The showy flowers have drooping, velvety rays which are entirely yellow or reddish-brown or partly colored yellow and brown. The small tubular flowers are brown and are borne on a thimble-shaped or columnar disk which varies greatly in size on different flowers, sometimes being nearly two inches long, but it is usually about an inch long. The disk is gray-green before the flowers open.

The dwarf niggerhead (Ratibida tagetes) is quite similar to the large niggerhead in growth habit and coloring, but it is a smaller plant and has smaller flowers. It is found from Kansas to Mexico on dry plains and blooms a month later than the large niggerhead.

The niggerhead belongs to a small group of showy American plants. It was introduced into European gardens many years ago, whence it later made its way back to American gardens. The niggerhead group is closely related to the black-eyed Susan and other cone-flowers. Several giant yellow-flowered cone-flowers grow in East Texas.

Clasping-Leaved Cone-Flower (Dracopis amplexicaulis) makes a showy display in roadside ditches from Central Texas to Louisiana and Missouri. It is a handsome plant with smooth branched stems one to two feet high. The slightly drooping rays commonly have brown spots at the base but may be all yellow. It is often called niggerhead or black-eyed Susan, but it may be distinguished from the latter by the thimble-shaped heads, which are green before the brownish disk flowers open. In South Texas it is at its best the latter part of April, but in North Texas June is its best month.

Black-Eyed Susan (Rudbeckia hirta) is a common daisy of the plains region from Southern Canada to Texas and Florida. It is a rough, hairy plant which grows from one to three feet high. Closely resembling it is Rudbeckia bicolor, which has shorter ray flowers marked with a reddish-brown base. The ray flowers of Rudbeckia hirta may also show a dark base. Both are widely cultivated. The group was named in honor of Claus Rudbeck, a Swedish botanist.

Sampson’s Root. Narrow-Leaved Purple Cone-Flower (Echinachea angustifolia) is easily recognized by the spreading or somewhat drooping rose-colored rays. The heads terminate the stiff, unbranched stems which, like the narrow leaves, are very rough and bristly. The stems grow one to two feet high and are scattered on limestone hillsides but may occasionally be found in dense patches along the roadsides. The leaves have three prominent nerves.

The scientific name is derived from the Greek and refers to the stiff reddish-brown chaff on the flower head. This chaff obscures the brown disk flowers and remains on the heads long after the seeds have fallen. This plant is hard to distinguish from the pale purple cone-flower (Echinachea pallida), which grows in the woods in the eastern part of the state. The latter has longer and more drooping ray flowers. The purple cone-flowers are well known in cultivation.