Humped Bladderwort - Utricularia gibba

Bladderworts are very interesting species as they are semi-carnivorous and augment their diet by using tiny bladders near their roots to capture even smaller invertebrates such as insects and nematodes.  Humped bladderwort (Utricularia gibba) is one of 10 yellow-flowered species native to Florida. It is found statewide in shallowly flooded open habitats such as pond edges and also is reported from every state in the eastern half of the US and from all of those states along the west coast as well.
Humped bladderwort is one that is rooted in the wet substrate instead of one that floats in the water column. The leaves are not very substantial and the 6-inch or so flower stalk emerges during the summer rainy season. Several bright yellow flowers occur along the top of this stem. Unlike most others, these small yellow flowers are held at an almost-45-degree angle. This is the best characteristic to distinguish it from other similar yellow-flowered species.
As bladderworts have little commercial interest, they are species to be admired when out in the field. Look for this one in seasonally and shallowly flooded areas at the edge of ponds and open wet prairies and marshes.

Southern Bladderwort - Utricularia juncea

Southern badderwort (Utricularia juncea) is one of 14 native bladderworts found in Florida. A few of them have purple blooms, but the vast majority have yellow - like this species does. Identifying them can be a bit of a challenge and the first step I take is to see if the plant is firmly rooted in the substrate or floating in the water. The second step is to look closely at the size and shape of the flowers. Southern bladderwort is one of those that is rooted below the waterline and it's flowers are somewhere in the middle range of the overall group.
Southern bladderwort is common to most of Florida. It is found in inundated areas in most counties from the western Panhandle into extreme south Florida. It is not vouchered in many of the counties in between, but I suspect that's simply for lack of looking for it. Bladderworts are not especially noticeable when not in bloom. This species is also rather widespread in the US and has been reported along the Gulf Coast from Texas and then north to New York.
Bladderworts are semi-carnivorous. The tiny bladders that lie either just below the waterline or soil line have one of the fastest trigger mechanisms in the plant world and they use it to capture tiny invertebrates such as insects and nematodes. As its Latin name implies, southern bladderwort has small narrow leaves near the base. Its flower stalk arises from this center and stands up to 6 inches above. The bright yellow blooms are about 1/2 inch long and without the definite "hood" seen in a closely related species - U. cornuta.
Bladderworts are very interesting species, but not ones with a lot of horticulture significance. I have never seen any of our native species offered for sale commercially. Just appreciate them for what they are and look for them once the summer rainy season is underway in shallowly flooded open habitats.

Dollarleaf - Rhynchosia reniformis

Dollarleaf (Rhynchosia reniformis) seems aptly named as its leaves are decidedly round and shaped somewhat like a silver dollar. This genus is also known as the "snoutbeans" which also is aptly named as the flowers have a decided "beak" (the Greek definition of the word Rhynchosia).  This species occurs in dry upland sites throughout much of north and central Florida. It also occurs throughout much of the Southeast Coastal Plan - from Texas in the west to Tennessee and North Carolina in the east.
These are perennial legumes that die back to the ground in winter. This species emerges in spring and forms a somewhat sprawling low-to-the-ground herbaceous plant that rarely stands taller than 6 inches. Because of this, it can be overlooked when not in bloom. Dollarleaf responds quickly to fire and prefers the open habitat that fire maintains.  The leaves are somewhat fuzzy and not compound like many other legumes.
The flowers are formed on short stems at the leaf axils and are arranged in a circular "head."  Single bright yellow flowers are generally produced one at a time within this arrangement. Each is small - about 1/2 inch long. Like many legumes, the flowers are of special interest to bees - especially bumblebees. Flowers can be produced in most months when temperatures don't fall below freezing.
Dollarleaf (and other Rhynchosias) are host plants for several skippers that use a wide variety of legumes - in particular the long-tailed and dorantes skipper.
Legumes are important nitrogen fixers and, because of that, they improve soil nutrition. They also serve as butterfly host plats and nectar sources for bees. Dollarleaf and other Rhychosias, however, have not been commercially propagated in Florida by any of the nurseries affiliated with FANN - the Florida Association of Native Nurseries. It is unlikely that this will change as other legumes are more "showy" and serve some of the same services as this genus. Look for this species in sandhills and open dry flatwoods.

Gopherweed - Baptsia lanceolata

Gopherweed (Baptisia lanceolata) is a pretty poor name for such a beautiful wildflower. Baptisias as a whole are wonderful wildflowers and various species come in a variety of colors. Gopherweed is one of the yellow-flowered species. This species is found in a scattered geographic range that includes counties throughout north and central Florida. It also is recorded in states just north of us - Georgia, Alabama, and South Carolina. Like most species in this genus, it occurs in well-drained uplands in full sun.  It is a perennial that dies back to the ground during the winter months.
Gopherweed reaches a mature height of about 3 feet. Its thick stem supports a wide crown of herbaceous branches that may spread out to 2-3 feet in width. Like most legumes, it has compound leaves in threes. As its Latin name suggests, each of the three leaflets are lanceolate in shape; about 3 inches long and 1 inch wide.
Flowering occurs in late spring. The canary yellow flowers are typical for many in the pea family - a prominent lower lip below two smaller wings. They are about 3/4 inch long and pollinated mostly by bumblebees.  Many Baptisias are important larval host plants. This plant is no exception and serves the needs of the orange and clouded sulfur, frosted elfin, eastern tailed blue, and two species of broad-winged skippers - the hoary edge and wild indigo duskywing. Because of this, gopherweed (and most other species in this genus) are important members of a native-plant butterfly garden.
Some species in this genus are occasionally propagated by native plant nurseries affiliated with FANN - the Florida Association of Native Nurseries, but I have not seen this one offered. Baptisias are not difficult to propagate from ripe seed collected as the dry seed capsules start to dehisce. Scratching the seed coat tends to speed up germination. They are fussy, however, about growing conditions. If you wish to add this plant, make sure that you can provide the sunny well-drained sandy soil that it requires.

Common Yellow Woodsorrel - Oxalis corniculata

Often viewed as a lawn weed, common yellow woodsorrel (Oxalis corniculata) is also a native Florida wildflower and has its merits. If it wasn't so common it just might be appreciated more. Native throughout Florida in nearly every mesic upland habitat, It also is vouchered across the US and has been introduced in every southern Province of Canada, except Alberta - and I'm betting it occurs there too.
Common yellow woodsorrel is a perennial herb that dies back to the ground in cold climates, but stays evergreen here where I reside in south-central Florida. It is a creeping ground cover that sends plantlets off of its stoloniferous stems that slowly spread outwards in all directions from the main plant. Each mature plant is diminutive, standing no more than 2 inches tall and about 6 inches across. Over time, however, each cluster of plants can occupy areas several feet across.
Woodsorrels have clover-like leaves, but they are not in the same family. While clovers are legumes, woodsorrels are in the Oxalidaceae - the oxalises.  As such, their leaves are high in oxalic acid and this makes them sour to the taste. They are sometimes used as a salad green, but too much consumption of oxalic acid can lead to health issues. 
Flowering can occur year-round in southern latitudes and from spring through late fall where regular freezes occur.  The tiny 5-petaled bright yellow flowers are attractive. The inner throat is sometimes lined with red streaks near the base of the petals. They are pollinated mostly by small bees.
Taxonomists find this species a bit confusing and some would split this species into several different ones. I do not believe that I've lived in any yard since moving to Florida 33 years ago that did not already have common yellow woodsorrel in it. There seems little reason to propagate it commercially.

Tievine - Ipomoea cordatotriloba

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Tievine (Ipomoea cordatotriloba) is one of the most ubiquitous native morning glories in Florida. Vouchered from virtually every county in the state, it occurs in a wide variety of upland habitats; especially those that have been disturbed. These photos were taken this past (2019) fall in Kissimmee Prairie Preserve State Park in Okeechobee County and constituted a new species on the Park's plant list. Tievine also is recorded throughout the Southeast Coastal Plain states from Texas to the west and North Carolina to the east.
This species has extremely variable leaf shapes. Some, like photographed above, are decidedly arrow-shaped, but others are heart-shaped with a good deal of variability within any single plant. Like all members of this genus in Florida, it remains evergreen in warm areas and deciduous in areas that routinely freeze. It also is a sprawling vine that twines itself through adjacent vegetation. As such. it extends itself for great distances in all directions from the main stem.
Flowering can occur during most months while it is actively growing. The flowers are showy, a rich pink in color with a deeper pink throat, and about 3-4 inches across. These are pollinated by a variety of insects.
Tievine, like other members of this genus, is an attractive native plant, but difficult to contain in a landscape. For this reason, few of our native species are routinely offered for sale by members of FANN - the Florida Association of Native Nurseries. It could be grown effectively on a fence or garden structure, but it would still require some regular pruning to keep it in the desired location. It would be easy to propagate from seed collected from ripe seed capsules.

Shrubby Primrosewillow - Ludwigia suffructicosa

 Shubby primrosewillow (Ludwigia suffruticosa) is a bit of an outlier among this genus with its pale yellow petals that do not lie "flat" in their open state. It also is not very "shrubby.".  This is a native herbaceous plant found nearly statewide in Florida in wet prairies and flatwoods as well as the upper edges of open marshes. This plant was photographed in early October at kissimmee Prairie Preserve State Park in south-central Florida. It also has been vouchered in Georgia, Alabama and the two Carolinas. 
Very little seems to have been written about this species and it is not included in most regional wildflower books. Despite its common name, it is herbaceous and rarely stands more than 2-3 feet tall. The leaves are very linear and clasp the stem. Each leaf is about 1/2-3/4 inch long.
Flowering occurs from spring through fall. Each bloom is no more than 1/4 wide. The flowers are somewhat rose-shaped, but comprised of 4 pale yellow to cream white petals. I suspect that they are mostly bee pollinated as others in this genus are. The weevils in the above photo were not pollinating the blooms.
Shrubby primrosewillow is an interesting, but not particularly attractive species. It has never, to my knowledge, been offered for sale commercially. I suspect it would be easy to propagate from the ripe seed once the capsules have matured. If you choose to try it in a landscape, make sure you are adding it to a very moist site.