Bluet; Rose Bluet

Bluet; Rose Bluet Hustonia rosea (Hedyotis rosea). A tiny, early blooming plant common in lawns, or spaces where vegetation suffers winter die back. The entire plant grows no more than 2” high, each stalk bearing a single, upright, cup-shaped flower with four petals ranging from bright blue to pale lavender to white.  Each flower appears to have a yellow cross in the middle, where the stamen form. The tiny, rounded leaves, born in opposite pairs along thin stems, are slightly succulent, and lacking petioles, clasp the soft stems.  the weakly upright, weakly branching stems loosely grow between stems of dormant grass.  New buds emerge from the crown of the plant as it grows.  Lawns (Not in Book) 2/12/19 – ; 2/18/20 – 3/22/20;

Note; light blue, four petal flowers born singly on very short stems

Viburnum, Rusty Blackhaw

Viburnum; Rusty Blackhaw Viburnum Viburnum rufidulum Raf;.  A small, understory, evergreen tree with cubed, but not ridged, corky bark, V rufidulum yearly produces new sprigs of glossy green, oval leaves with a very finely toothed margin, arranged in opposite pairs along the stems, completely lacking any drip-tip.  New stems, often long arching suckers off of the main trunk and branches, have a slight layer of rusty colored fuzz, giving the plant its descriptive name. Panicles of small, white, tube flowers that are mildly fragrant, bud from the ends of new growth.  The short tube ends in a corolla of 5 petals, with five white stamen, each tipped with a yellow anther, protruding beyond the profile of the flower, giving the bunches a slightly fuzzy look. The fruit are oblong, dark blue drupe with a single seed. Viburnum cultivars are popular in hedges, both for their yearly bloom of large, showy bunches of white flowers, and their glossy, evergreen foliage. (957-958) 3/30 – 4/15/15; 3/15 – 4/5/16; 3/22/17 – 4/7/17; 3/28/18; 19 no obs; 3/25/20;

Note; terminal bunches of white tube flowers that unfold into a corolla with 5 petals, the white stamen tipped with yellow anthers protrude beyond the profile of the flowers, giving the bunches a fuzzy look

Rusty Blackhaw habit; an evergreen, understory shrub with dark, corky bark, glossy foliage, and showy bunches of white flowers that convert to oblong blue drupes

Note; the dark bark is corky and divided into cubes, not furrowed ridges.

Note; bright, evergreen, glossy, oval leaves with very fine serration along the margins, are arranged in opposite pairs along stems, completely lacking any drip-tip

Crape-Myrtle; Ladies Streamers

Crape-Myrtle; Crape-Myrtle/Ladies Streamers Lagerstoemia indica L;.  This relatively small, deciduous, multi-trunked tree, originally from drier parts of India, grows from a bulbous base, allowing it to survive fire, drought and flooding.  The smooth, reddish-brown bark sheds in layers, revealing greyish new bark underneath.  Though hardy, and having viable seeds, this commonly planted cultivar, grown for its attractive flowers and foliage,  has not been known to reproduce itself in forests, or on the prairies.  In yards, the tree sprouts, often as not, from roots, rather than its seeds.  An evergreen in tropical environments, but deciduous in temperate zones, or regions with a prolonged dry season, it tolerates Dallas summers, blooming in July.  New growth and suckers sprout in May, the attractive, glossy, oval leaves arranged in an alternating pattern, followed by terminal panicles of round, purplish buds which open to 1” showy, lightly fragrant flowers with crape like petals born on filaments, and curved pistols and stamen that project well beyond the petals.  Modern hybrids range from white to deep red to purple.  Flowers convert to black capsules less than ½” across, filled with small, hard seeds.  New shoots, covered in a light grey powdery substance, can grow as much as 5’ in one season, needing yearly pruning to shape the tree and encourage blooming. (787) 5/15/16; 5/8/17; 5/25/18; 5/25/19; 5/27/20;

Note; terminal, dense panicles of round buds open nearly all at once, weighing the stems down

Crape Myrtle habit; multiple, leggy trunks with bark that peels off in layers, glossy oval leaves

Note; glossy, crisp, oval leaves are arranged alternately along new growth, which are leggy and brittle

Note; round buds open to frilly, crape like petals and curved pistols and stamen that protrude beyond the flower profile

Note; flowers have a lite, pleasant fragrance most obvious during the heat of the day

Buckeye; Texas Buckeye

Buckeye; Texas Buckeye Aesculus arguta Buckley;. A low-growing, shade loving, weak, crooked, deciduous, understory tree which grows in moist soils, bearing large (12-18”), soft, palmate leaves with a toothed margin. The hand-shaped leaves have up to 9 “fingers” with herring-bone veination radiating out from a central stem.  The light gray bark is soft and scaly looking.  Dense, terminal panicles sprouting from new shoots produce greenish white to yellowish bulb-shaped flowers, the pistol and filamentous stamen (topped with brown anthers) protruding beyond the petals.  Flowers convert to a dry, ball-like, prickly seed pods covered with dull spikes, containing 2 flattened lustrous, smooth seeds 5/8” to ¾” across.  Found only along creek beds in low lying areas. Stream-side portions of Big Tree Circuit and DORBA trails (678-679) 3/28-4/13/15; 3/21/17-4/7/17; 3/22/18-3/29/18; 3/25/20 – 4/1/20;

Texas Buckeye habit; a short, soft, deciduous understory tree with large, hand shaped leaves, each with up to 9 fingers, found locally only along stream beds

Note; the soft, scaly bark has random, corky knobs embedded in it.

Note; the large, palm shaped leaves have 7-9 narrow elliptical leaflets, each with toothed margins, all radiating from a common stem.

Note; terminal panicles of bulb shaped yellow-green flowers with protruding pistol and filamentous stamen, each tipped with brown anthers. Late March to early April

Note; the seed pod is a dry, round, brown pod with dull warty projections.

Woolywhite

Woolywhite (Old Plainsman) Hymenopappus artemisiifolius. A pithy stemmed flower over 2” tall, which begins as a rosette of coarse, narrow, compound pinnate leaves in which the pointed end leaflet is longer and more lance-like than side leaflets.  Leaves have no stem but do not clasp the stiff stalk.  As the smooth stalk grows, the leaves are arranged in an alternating spiral around it, becoming less complex toward the top.  The loose inflorescence branches frequently from leaf nodes in a spiral pattern, dividing into sprays of small flower heads.  Each head is composed of tiny, white, papery flowers with yellow centers,  so tightly clustered they look like one large, complex flower.  Pistols and stamen protrude beyond the flowers.  PL, PDU (100) 4/17/16-6/15/16; 4/7/17- ; 4/22/18; 4/28/19; 4/11/20

Wooleywhite habit; a rosette of deeply pinnate leaves that produces a tall, pithy stalk with alternate, pinnate leaves, turning into a branching flower spike composed of clusters of small, papery, white flowers

Note; the inflorescence branches readily at leaf axils, each side spike bearing dense heads of  tiny, white flowers

Note; narrow, deeply pinnate leaves in which the center lobe much longer than the side lobes, arranged in an alternating spiral around smooth, pithy stems

Note; sprays divide into stems tipped with tight flower head, which look like a complex flower, but which are composed of papery, white flowers with yellow centers

Note; pistol and stamen protrude beyond the ends of the tiny flowers

Threadleaf

Threadleaf (Bishop’s weed) Ptilimnium capillaceum. A short (10-12”), fibrous plant that derives its name from its thread-like, compound pinnate leaves which divide into many threads per petiole, this annual blooms early, before it gets crowded out by taller vegetation.  The leaves clasp the slightly ribbed stems, the petioles wrapping them in a transparent sheath.  The weakly upright stems would sprawl if not supported by surrounding vegetation.  The flowers head are composed of tiny white flowers, born in a compound umbel, much like Hedge Parsley, each flower composed of 5 spatula shaped petals arranged around a yellow center.  Flowers convert to smooth, elongated seeds with slight “winglike” projections.  The plant differs from Hedge Parsley (Torilis arvensis) in the shape of the leaf, the season, and that flowers do not form sticky “velcro” seeds like Hedge Parsley. PDU, DK, PL (60) 4/22/15-6/5/15; 4/14/16-6/25/16; 3/27/17- ; 5/10/18; 4/1/19; 3/18/20

Threadleaf habit; low growing masses of soft, fibrous stems, with thread-like leaves, and bearing umbels of small white flowers

Note; each stem ends in a compound umbel of 5 spatula shaped petals arranged around yellow centers

Note; five, tiny basal stamen bear yellow anthers above the flower head, making them look slightly fuzzy

Note; low growing, soft, feathery, thread like leaf pattern

Note; compound pinnate leaves with thread-like leaflets which clasp the fibrous, ribbed stems,arranged in an alternating spiral

Note; leaf petiole clasps the stem, wrapping it in a sheath

Note; a low growing spread of Threadleaf, (and taller Delphinium)

Spiny Sow Thistle

Spiny Sow Thistle Sonchus asper. An early (April) blooming annual, Sow Thistles begin as rosettes of deeply cut, thistle like leaves which look spiny, but are soft and harmless.  Leaves bleed a slightly bitter, but harmless milky sap when cut. The pinnate, clasping leaves, which have deep, rounded sinuses, are arranged in an alternating spiral around smooth, hollow stems.  The rosette of leaves stays low as long as the weather is cold, but quickly grows up when it warms, culminating in a compact clump of small, short lived, green buds, invariably coated with a white powder.  Stems can be trampled down, but continue to grow, arching back up and producing flowers.  Yellow ray flowers emerge from the tapering buds.  If cut back, the hollow stem quickly sends out new stalks.  The ray petals are squared at the ends, surrounding a yellow disk flower fuzzy with yellow anthers.  Flowers transform into coarse blow-balls of wind- blown achenes, and the plants wither soon after the plant goes to seed.  Common along partially shaded paths.  (222) 3/25/15-5/20/15; 3/10/16; 2/25/17- ; 2/8/19 – ; 20 not recrd;

Spiny Sow Thistle; A soft plant with hollow stems and leaves which look spiny but are soft and harmless, bearing compact bunches of tapering buds that open to yellow ray flowers.

Note; pinnate, thistle like leaves with deep, rounded sinuses, look spiny but are soft and harmless

Note; leaves clasp the otherwise smooth, hollow stems

Note; plants end in a tight bunch of tapering buds, invariably coated with a grey powder

Note; flowers convert to blowball achenes

Note; tapering buds

 

Texas Yellow Star

Texas Yellow Star Lindheimera texana. A soft stemmed, fuzzy, if not bristly annual of medium height, the Yellow Star has opposite pairs of soft, clasping, fuzzy, light grey-green lanceolate leaves with smooth margins.  The single stems do not clump, and only weakly branch, going dormant by the time summer turns hot.  The 1” to 1.5” yellow-orange flowers are born in a loose, branching spray, opening one at a time, as a slightly bell-shaped 5 pointed, yellow “star” framed by 5 thick sepals.  Each petal is veined linearly, with a noticeable notch in the end.  Soft seed capsules split, spilling tiny brown-black seeds.  Preferring partial shade, it is found along forest margins of CC, PDU. (202) 4/2/15 – ; 3/15/16; 3/22/17- ; 4/22/18; 3/20/19; 3/25/20

Texas Yellow Star habit; a medium height, fuzzy, weakly branching plant with opposite, clasping leaves and terminal clusters of yellow, 5 petal flowers

Note; clasping, fuzzy, lanceolate leaves with smooth margins arranged in opposite pairs

Note; seed capsules full of tiny black seeds.

Sunflower, Kansas Sunflower

Kansas Sunflower Helianthus annuus. A very tall (4-7’), pithy-stemmed, branching annual with coarse bristles on all parts of the plant.  Sunflowers, unlike daisies, have only one stalk per plant.  The large (4-10”) heart-shaped leaves are dull green, born alternately along the stalk in an open spiral, droop slightly.  Unlike commercial sunflowers, Kansas Sunflowers produce a loose, branching terminal and axillary flower sprays.  The large (4-6”) flower-heads (larger on the terminal sprays) sport flat, yellow, pointed ray flowers nearly 2” long arranged around a disk comprised of tiny reddish flowers.  The larger, terminal flowers emerge first, then those budding from leaf axils.  The seeds are embedded in the disk, appearing as a composite spiral.  Common in disturbed soils (198) 5/20/15; 6/1/16- ; 5/20/17- ; 5/28/18; 19 not recrd; 5/20/20;

Kansas Sunflower habit; tall, thick stemmed plant with heart shaped, alternate leaves, and loose terminal and axillary sprays of large, showy, bright yellow ray flowers.

Note; all parts of the plant covered in bristle like hairs.

Note; large, heart shaped leaves are arranged around the stem in a loose, alternating spiral

Note; flowers comprise a ring of large, pointed ray flowers around a disk of tiny reddish flowers

Note; ray petals, with 4 or 5 linear veins, end in pointed tips

Note; seeds are embedded in the brown disk in a spiral pattern

Note; flowers born singly on a loose spray,

Sunflower, Engelmann’s Sunflower

Engelmann’s Sunflower/Daisy Engelmannia pinnatifida. A perennial that looks like a small sunflower, this daisy, which begins as a rosette of hairy, deeply pinnate leaves, produces multiple, branching stalks, the leaves alternating up the stems. Slender, branching flower sprays produce bright yellow ray flowers 1”-1 1/4” across, surrounding a central, green disk.  From the disk bud 20 or so yellow disk flowers, each with projecting anthers.  The 8 ray petals have linear veins, ending with three teeth, which curve back in the heat, or as they age throughout the long blooming season. Disks produce a seed capsule with a central spike, not an open head, like sunflowers. The loose panicles of flowers become bushy as the plant ages.  An invasive of disturbed soils, this flower is crowded out by perennial vegetation, unless the area is mowed down.  Most common along road sides, trail margins, and lawns.  (202) 4/6/15-; 3/27/16; 3/13/17- ; 3/26/18 – 6/15/18; 3/25/19; 3/25/20

Engelmann’s Sunflower habit; long deeply pinnate leaves on a clump of hairy, branching stems, with an open panicle of bright yellow ray flowers

Note; basal rosette of large, deeply pinnate, fuzzy leaves, arranged on stalks in an alternating spiral

Note; loose sprays of 8 petal ray flowers, each petal ending in a toothed tip, surrounding a yellow disk

Note; 8 ray petals, each with several deep veins, surrounding a green disk with embedded yellow disk flowers.

Note; petals curve back in the heat, or with age