Chickasaw Plum Prunus angustifolia

Chickasaw Plum Prunus angustifolia. A thicket forming, twiggy bush which has sharp thorns along the branches, this fruit tree is common on open land along water courses and road sides.  Blooming later than P umbellate, which produces umbels of flowers on the ends of stems, Chickasaw Plum produces white flowers along the full length of stems, making a display of total white “bottle brushes”.  The ½” fruit begins green, turns red, then yellow when it is ripe.  The leaves are soft and serrated along the edges, but longer and thinner than P umbellate.  Like other members of the cherry and plum family, the leaves are toxic to livestock and rabbits.  Each individual, sweetly fragrant flower is composed of 5 oval petals surrounding a central pistol with many filamentous stamen.  Known clumps are most prevalent under the power lines along the DORBA trails. (401) 3/21/19; 20 no obs;

3/21/19

Note: Chickasaw Plum blooming with masses of fragrant, white flowers from nodes along entire stems

Note; thicket forming habit of Chickasaw Plum

Note; dense masses of blooms along entire stems

Note; leaf bearing twigs can form into long, sharp thorns along the small, twiggy trunks.

Saw Grass

Saw Grass; Cladium sp; grasses belonging to a wide ranging genre which grow from a thick rhizome or corm, marked by very long, thin leaves armed with tiny, sharp teeth.  When stroked with the direction of the teeth the blade feels smooth, but when stroked against the teeth they can cut through the skin.  Most common in open areas that stay wet, the grass may not be noticed unless one is walking in cut-offs, or barefoot.  The branching flower stalks are stiff, like twigs, bearing dense clumps of tiny flowers, each with 6 petals.  Blades of grass are a smoky grey, often turning reddish toward the ends.

Saw Grass habit; dense clumps of smoky grey leaves, armed with tiny saw like teeth, often turning reddish toward the ends, which rise from thick underground rhizomes.

Eastern Black Walnut

Walnut; Eastern Black Walnut Juglans nigra L;. A large, low branching, slow growing, deciduous forest tree, with thick, deeply furrowed, black to dark grey, corky bark, Walnuts are more common in Eastern Forests where there is abundant rainfall.  DFW is on the margins of Walnut habitat, a few specimens growing along the north facing slopes of water cut canyons along the MK Trace.  The compound pinnate leaves, over a foot long, each have up to 17 slightly toothed, lance shaped leaflets, born in opposite pairs, with a final solo leaflet.  Catkins are produced in April off the ends of last year’s stems, at the same time new leaves are budding.  Catkins, which look like strings of warty knobs, convert into round, green nuts up to 2” in diameter, which turn black after they fall.  Inside this fibrous husk (3/16” thick), lies a very hard, round, nut 1″ to 1½”  in diameter, with deep convolutions, that can only be cracked open with a hammer (rock or iron).  The flesh of the nut is lobed like an English Walnut, but is somewhat spicy, once commonly used to flavor ice-cream.  Tiny maggots eat much of the pulp away from the seed as it rots on the forest floor.  Black Walnut wood is dense, dark brown with nearly black grain, but often bored through by wood beetles.  Texas black walnut (Juglans microcarpa), found west of DFW, has much smaller seeds, as the name micro– implies. (123-124) 4/18/15; 4/22/16; 3/28/17 – 4/10/17; 4/17/18; 4/20/19; 4/13/20 – 4/20/20;

Eastern Black Walnut habit; a large, readily branching canopy tree with a loose crown, long compound pinnate leaves, and dense, dark brown heart-wood with black veining, bearing very hard nuts encased in fibrous casques

Note; deeply furrowed, thick, black to dark grey, corky bark

Note; long compound pinnate leaves with odd numbers of leaflets, opposite pairs and a final lone tip leaflet, each lance shaped with a slightly serrated margin

Note; pendulant catkins that look like strings of warty knobs bud from the ends of last year’s twigs as new leaves are growing out

Note; large, round, green fruit which turn black after they fall, composed of a thick, fibrous rind surrounding a very hard, thick nut with spicy, white meat.

Note; the hard, convoluted nut embedded within an inedible, fibrous casque, green when it falls, turning black with age

Soapberry, Western Soapberry

Soapberry; Western Soapberry Sapindus drummondii Hook;. Soapberry can grow to be a branching crown tree in some areas, but in the DFW area it is normally a short, spindly, deciduous bush of the understory, rarely more than 4” in diameter.  The loose, light grey, extremely scaly bark is often tinged with yellow or orange lichens.  Light green shoots produce a new crop of oddly pinnate leaves which alternate in a spiral around the stems, the asymmetrical leaflets alternating along the ribs, rather than being arranged in opposite pairs.  Leaves turn bright yellow in the fall.  Flower panicles, 6-10” long, bud from the tips of new growths, bearing tiny (1/4”), fragrant, short-lived, white flowers with 5 papery thin petals.  Flowers have 8 or more stamen, each tipped with an off-white anther, which project out, far beyond the flower, giving the flower heads a fuzzy look.  Flowers convert to yellowish, translucent berries with a solid pit, which look similar to Chinaberry seeds.  When dried, the saponin rich berries can be vigorously rubbed in water to produce soap-suds.  Otherwise, the berries, though used in moderation as a purgative and antiseptic, are considered toxic.  Trees are parasitized by the Soapberry Borer beetle, which eats away the water carrying xylem layer under the bark.  (683-684) 5/28/15 – 6/5/17; 5/25/17 – 6/5/17; 5/25/18; 19 no record; 5/28/20

Western Soapberry habit; a spindly tree of the understory with grey, scaly bark, alternating pinnate leaves, and terminal panicles of tiny, white flowers which convert to round yellow berries.

Note; alternating spirals of pinnate leaves composed of an odd number of asymmetrical, lanceolate leaflets which alternate along the rib, rather than being arranged in opposite pairs.

Note; panicles of fragrant, but short lived, very small, white flowers grow from terminal buds of new growth

Note; tiny white, ball like buds that open to small white flowers with 5 papery petals and 10 filamentous stamen, each tipped with a yellow anther

Note; translucent, yellowish fruit with a large, hard pit visible inside, make suds when scrubbed in water

Note; asymmetric leaves are bulged to one side

Privet; Glossy Privet

Privet; Glossy/Japanese Privet Ligustrum lucidum var. macrophyllum Ait;. Much bigger, more upright, and less aggressive than L sinense (Chinese privet), this vigorous, invasive, hardy, evergreen, ornamental from south-eastern Asia is more of an understory tree than bush.  The smooth, light grey bark of the trunks, often mottled with lichens, bear large (2-4”), glossy green, pointed leaves that are arranged in opposite pairs along long (6’+) arching stems.  More upright, L lucidum is an understory tree with 3-6 trunks, and though the stems might take root if they touched the ground, they rarely do. Terminal panicles of fragrant, white flowers, each with 4 rounded petals, grow out from the axils of new leaves and the ends of last year’s stems.  Flowers convert to blue-black, oblong fruit which remain on the bush through the winter, providing spring food for migrating birds.  L lucidum is common both in the thin soils of limy high ground and the deep soils of lowland flood plains. (856) 5/28/15- ; 16 not recrd; 17 not recrd; 5/26/18; 19 no obs; 5/10/20;

Glossy Privet habit; an upright, evergreen bush with tree like trunks, often mottled with lichens, which bears large, opposite, glossy, oval leaves, and terminal panicles of showy, white flowers

Note; the trunks are smooth, lacking the knobs of L sinense (Chinese privet)

Note; opposite, glossy, dark green, pointed, egg shaped leaves with a sharp drip-tip stay on the plant for several years

Note; terminal panicles of showy, white flowers with a mild fragrance, each flower composed of four rounded petals, stamen and pistol emerging beyond the flower profile

Note; each shallow tube flower has four rounded petals, two white, filamentous stamen tipped with cream colored anthers extending beyond the flower face

Poison Ivy

Poison Ivy; Poison Ivy Toxicodendron radicans L;.  A variable, noxious plant that grows as a clinging vine on tree trunks, or free-standing as a low, weak, or sprawling plant with reddish stems which sports coarsely toothed trifoliate leaves, and occasionally white berries.  Clusters of tiny (3/16”) green and yellow flowers, composed of 5 fleshy petals arranged around a yellowish disk of stamens and a white pistol, bud from old leaf scars, turning into smooth white berries, which some birds can eat without ill effects.  The glossy, compound leaves come in sets of three leaflets, each of which is deeply indented into three or five pointed lobes.  The leaves are generally small (2-3”) in upright plants, but much larger (4-6”) in the vine form.  Some vine forms have an extra set of leaves, arranged as a compound leaf of 5 leaflets. Vines attach to tree trunks with dense mats of roots, much like Virginia Creeper, but can be easily stripped off.  Rhizomes burrow through leaf litter, spreading underground.  The general rule, “Leaves of three, leave them be” was coined to warn people of the bad rash touching Poison Ivy leaves can induce.  Although there are other plants which bear leaves in sets of three (Ash, Hops, Skunk Berry), they are shaped differently.  Poison Ivy prefers acid soils around Juniper trees, reaching larger sizes near water.  Goats can graze the leaves with no ill effects.  Poison Ivy rash generally lasts two weeks, but lathering the rash with Burt’s Bees poison ivy soap can cut down on the itch and shorten the duration to days.  If exposed to leaves, wash with soap and cold water, as hot water may drive the poison into pores.  Do not attempt homeopathic remedies that involve drinking tea made from the leaves, for this has led to horrible reactions.  A few lucky individuals seem not to react to poison ivy.  Poison ivy cannot tolerate full sun, and is easy to eradicate by pulling runners out of the ground (guarding the skin with rubber gloves).  Do not burn dried plants, as the smoke can carry the toxic resin into the lungs. Leaves turn a dark red in the Fall.  (638-641) 4/13/15 – 5/15/15; 4/5/16; 3/10/17 – 4/10/17; 18 no obs; 4/1/19; 4/9/20;

Poison Ivy habit; a variable plant that may be a free standing, weak reddish stem, or a vine that climbs trees with short clinging roots, like Virginia creeper, or an Ivy, with trifoliate leaves and small greenish-yellow flowers that convert to white berries.

Note; glossy green leaves come in sets of three pointed, egg-shaped leaflets with coarsely toothed margins.  Some leaves have 5 leaflets.

Note; small spikes of greenish, fleshy flowers with five petals arranged around a ring of yellowish stamen, with a central, white pistol, are born from old leaf axils.

Note; flowers convert to greenish berries, which turn white when mature.

Note: leaves turn bright red in the fall

Plum; Flatwoods Plum

Plum; Flatwoods Plum Prunus umbellate Ell;. Southern forests host many variable, similar scraggly, deciduous, understory plums with distinctive, dark scaly bark and twigs that end in a sharp, hard thorn.  Oval shaped leaves with a finely serrated margin and prominent drip-tip, alternate along short stems, which become a sharp thorn when the leaves drop.  Plums are the first fruit trees to flower in the spring (late Feb to early March), umbels of fragrant, white blossoms ½ – ¾” across (no pix) budding from last year’s twigs before new leaves develop. Each flower is composed of 5 oval petals surrounding a central pistol and a dome of filamentous stamen.  Early blooms risk late frosts or ice-storms, in which case the tree may produce a second, smaller bloom. The small ( ½ – ¾ ”), light purple, pulpy fruit, ripening between June and July, are somewhat dry and tart, but are sweet enough to be eaten.  The pit is round and flattened. The wood is a dark brown with slightly darker striations.  It is common on shallow lime-stone soil, but grows well in deeper, moist bottom lands too. Also known locally as Chickasaw Plum. (401) 3/5 – 27/15; 2/22/16 – 3/14/16 (fruit 6/15/16); 2/18/17 – 3/15/17; 3/6/18 – 3/20/18; 2/18/20 – 3/10/20;

Note; umbels of white fragrant flowers with multiple stamen budding from leaf nodes on last year’s twigs

Flatwoods Plum habit; a slightly scraggly understory tree with distinctive, scaly bark and long, woody thorns, bearing soft, alternating, oval leaves with finely serrated margins, producing umbels of fragrant, white flowers composed of 5 petals arranged around a dome of stamen.

Note; the scaly bark is nearly black in color, mottled with dark grey

Note; younger stems have smooth, light grey bark which peels away revealing a mahogany color

Note; the alternating leaves are an elliptical oval with a finely serrated margin and a prominent drip tip.

Note; Flatwood Plum bear flowers in loose clusters

Persimmon; Texas Persimmon

Persimmon; Texas Persimmon Diospyros texana Scheele;. This tall, somewhat ragged, deciduous tree has leaves that are thicker at the end than the stem (spatulate), arranged in an alternating pattern along this year’s twigs.  The heart-wood is dense and brown (unlike the black persimmon from further south in Texas), and takes a nice polish.  Young stems are smooth, but the bark on mature trunks is broken into corky cubes.  Small greenish white, cup-shaped flowers (no pix) erupt from this year’s leaf axils, forming round, orange, pulpy fruit up to 1” across with many flattened almond shaped seeds less than ½” long.  The fruit is sweet when it ripens, but contains more seeds than pulp.  The fruit that falls is eaten by possum and coyotes, but from the prevalence of the seeds in scat, most are eaten by raccoons.  Persimmons prefer deeper soils along streams in bottom lands.  (838-839) 17 no obs; 5/6/18; 5/11/19; 5/10/20;

Texas Persimmon habit; a tall, straight tree with dark grey, corky bark broken into cubes, bearing alternating spatulate leaves and fleshy flowers that convert to 1″ orange, pulpy fruit.

Note; grey bark is broken into corky cubes

Note; spatulate leaves arranged in an alternating pattern along new twigs.

Note; orangish, pulpy fruit about 1” in diameter, full of ¼” seeds.

Note; fall colors yellow to orange

Note; greenish, bell shaped flowers

Note; seeds prevalent in racoon scat

 

Oak; Texas Red Oak

Oak; Texas Red Oak Quercus texana Buckl; Most of Texas is too dry for the straight Northern Red Oak preferred by home-owners, and the sun is so intense it can sunburn its smooth bark.  Locally, Texas Oak takes the place of Red Oak, both in terms of the color of its wood, the shape of its acorns, and the shape of its leaves.  The deeply cut lobes of deciduous Texas Red Oak leaves, like the Red Oak, end in sharp points, but it grows from a heavy bulbous base (a drought tolerant feature), supporting multiple trunks, and its black, corky, ridged bark protects it from the sun.  The tree is subject to viral wilt which kills trunks of stressed trees at about 4’, turning their heart wood to mush.  New trunks sprout from the base, and new shoots grow from trunks, giving the tree a “shabby” look, but eventually the tree dies. Texas Red Oak reproduces via catkins of tiny flowers, which convert into clusters of blunted, egg-shaped, light brown held in a shallow, nearly flat cap.  Catkins bud from the tips of last year’s stems, just before new growth begins to bud in. Tiny wasps lay eggs between the layers of Q. texana leaves, which the tree surrounds, with a hard, seed-like coating, suspending it in white fibers, producing a green.  The local name “Red” Oak comes from the reddish color of the highly desired, straight grained,  heart-wood, which has a peculiar, though not unpleasant, sour smell when freshly split.  Acorn weevils drill pin-prick holes in the light brown acorns, and the grubs eat out the nut, emerging through holes the size of pencil lead, drilling into the soil where they finish molting.  Drilled acorns are filled with black crud and are not viable. (192-193) 4/1/15; 2/23/16; 3/8/17-3/20/17; 3/18/18; 3/20/19-4/1/19; 3/5/20 – 3/28/20;

Texas Red Oak habit; a deciduous, crown tree that often has multiple trunks rising from a bulbous base, sometimes with new suckers sprouting from it, bearing pinnate leaves cut by deep sinuses, each lobe with a sharp tip, and producing egg-shaped, brown acorns

Note; black, corky, deeply furrowed bark that gives Texas Oak protection from the sun and drought.

Note; the bulbous base shared by multiple trunks, which readily sprouts new shoots

Note; alternating, pinnate leaves cut by deep, rounded sinuses, each lobe with a sharp point

Note; brown, oval, egg shaped acorns lacking a sharp, terminal spike, with an exit hole from an Acorn Weevil larva

Note; warty, green leaf galls caused by a tiny wasp that lays an egg between the layers of the leaf, filled with white filaments that support a hard core.

Note; leaves turn dark red in the fall

 

 

Oak; Post Oak

Oak; Post Oak Quercus stellata Wangh,. The white to light grey bark of this slow growing, deciduous, irregular shaped tree comes in loose chips rather than deep fissures.  The bulbous base is often surrounded by shoots, forming an island of wispy suckers, a few of which can become secondary trunks, or the main trunk, should the trunk die.  The light green, irregular, three lobed leaves are rounded, rather than sharply pointed, like Red Oak.  Leaves are frequently infested with reddish or greenish fruit-like galls.  A grub lives in a small hard knot in this gall, suspended by a fibrous network inside.  Catkins (small spikes of tiny flowers) emerge from the ends of last year’s stems after new leaves have sprouted.  The small acorns are nearly round, with a sharp tip. Cut branches or trunks reveal the typical radiating pattern of oaks, but do not form the dark heart-wood of red oak.  Useless for lumber, the wood was most often split into fence posts and rails, lending the tree its scientific, and local name (rails/posts).  Locally it is most common along the chalky escarpment and slopes, often in a tangled, shrubby form, but it can grow to very large size over time.  Forests of this tree are common between Wichita Falls and Vernon Tx along 287. The stately, knurled Big Tree (on Big Tree Circuit), the largest tree on the ILC, is a Post Oak.  (154-155) 4/3/15; 3/25/16; 3/10/17-3/28/17; 3/25/18 – 4/10/18; 3/25/19 – 4/1/19; 3/25/20;

Post Oak habit; a slow growing, often knurled looking, deciduous oak with crooked branches, an irregular crown and scaly (rather than furrowed) bark that produces very small acorns

Note; light grey bark that is scaly, rather than furrowed

Note; often with multiple trunks, or at least islands of green wispy suckers growing around a bulbous base.

Note; leaves, arranged in an alternating spiral, have three to five smooth lobes with rounded tips.

Note; catkins emerge from last year’s stems after new leaves have grown in

 

Note; leaf galls, often red, called “cherry galls” are composed of a thin, warty shell surrounding a hard core suspended by radiating white filaments

Note; small, nearly round acorns with a sharp drip tip.