Thursday, November 1, 2012

Royal Palm – Roystonea regia

Roystonea regia - royal palm

This is a quick post of three images of a cultivated royal palm, Roystonea regia, used as a landscape plant on the grounds of my work place. One image shows the abundant fruits, which are a favorite of starlings, a non-native invasive bird that has become the most abundant bird in North America. The other images are close-ups of the trunk.

Roystonea regia - royal palm

Roystonea regia - royal palm

Image and text © 2012 Rufino Osorio

Saturday, September 8, 2012

Platanthera leucophaea — Prairie White-Fringed Orchid

Stephen Packard, prairie plant expert extraordinaire, has written a blog post on the discovery of the prairie white-fringed orchid (Platanthera leucophaea) within the boundaries of the City of Chicago. I played a role in that discovery although, at the time, I did not realize the full importance of finding this charismatic prairie plant in one of the most highly developed and urbanized regions of the country. Only when I learned that it was a federally-listed threatened species, and an Illinois-listed endangered species, did I realize how unusual it was to find this plant at the western outskirts of Chicago, not far from O'Hare Airport.

For the full story of Steve's efforts at protecting, preserving, and increasing the population of this showy terrestrial orchid, head on over to Steve's blog, Vestal Grove.

Sunday, June 3, 2012

Hibiscus poeppigii – Fairy Hibiscus

Hibiscus poeppigii, Fairy Hibiscus, Poeppig's Hibiscus, Fairy Rosemallow, Poeppig's Rosemallow

Hibiscus poeppigii is a dwarf, shrubby perennial that bears small 1-inch long brilliant red flowers pollinated by bees and hummingbirds. It will produce flowers all year round so long as warm temperatures and adequate soil moisture prevails. Plants in full sun grow 1–4 feet (0.3–0.9 meters) tall and about half as wide and bear leaves 1–2 inches (2.5–5 centimeters) long. The stems will grow taller and the leaves larger if plants are situated in the shade or are overtopped by taller plants.

Hibiscus poeppigii is readily propagated from seed which germinate in about 10 days if sown during warm weather. It makes a delightful pot plant and I have grown it from seed to flowering in about 4 months in an 8-ounce (0.24 liter) plastic cup. In the ground, plants will rarely exceed 1.5 feet (0.46 meters) tall and be rather twiggy and sparsely leafy if grown in a dry, sunny spot. Of course, plants will grow much taller and be more lush if grown in continually moist soil or in part shade. Since it is the smallest of all Florida native hibiscus, and because it begins to flower when scarcely 6-inches (15.24 centimeters) tall, it is referred to as fairy hibiscus, a name which I much prefer over the prosaic and literal common name of Poeppig's hibiscus.

Hibiscus poeppigii is a state-listed endangered plant in Florida, where it occurs only in Miami-Dade County and the Monroe County keys. It also occurs as a native plant in the Caribbean (Cuba and Jamaica) as well as in Mexico (from Tamaulipas to Yucatán and Chiapas) and Guatemala. Taxonomically, it belongs to section Bombicella of the genus Hibiscus. In the New World, the section is centered in Mexico and Hibiscus poeppigii is the only representative of section Bombicella that is native east of the Mississippi River.

Reference:

Fryxell, Paul A. 1980. A Revision of the American Species of Hibiscus Section Bombicella (Malvaceae). Science and Education Administration, United States Department of Agriculture Technical Bulletin No. 1624. Internet

Image and text © 2012 Rufino Osorio

Hibiscus furcellatus – Sleepy Hibiscus


Hibiscus furcellatus is a large, coarse, shrubby perennial or shrub that bears ornamental, large, dark pink flowers pollinated by hummingbirds and bees. It is remarkable for its wide natural range and occurs from Florida, in the southeastern United States, all the way south to Paraguay and Argentina. It also occurs in the Greater Antilles and, by way of long distance dispersal from Central or South America, it is also native to Hawaii.

In Florida, the petals rarely spread very widely, thus accounting for the common name sleepy hibiscus since the flowers never fully "wake up." Occasionally, the petals will fully spread open but usually only for a short time and then only very early in the morning. Hibiscus furcellatus is easily cultivated from seeds and readily flowers during its first year. Its cultivation is undemanding and it grows equally well in moist or dry soils in light shade to full sun. Although wild plants are clearly perennial shrubs, plants cultivated in my garden have always behaved as annuals and must be grown from seed each year.

Image and text © 2012 Rufino Osorio

Hibiscus dasycalyx – Neches River Hibiscus

Hibiscus dasycalyx - Neches River hibiscus, Neches River rosemallow

Hibiscus dasycalyx, the Neches River hibiscus, is an endangered hibiscus that naturally occurs in the floodplains of the Angelina, Neches, and Trinity rivers in eastern Texas. There are only about 500–600 plants in the wild and wild populations are threatened by habitat destruction and genetic contamination with the closely related Hibiscus laevis. It is sparingly cultivated and is easily grown from seeds or cuttings in continually moist soil in very light shade or full sun. Its cultivation in South Florida is complicated due to the plant being severely attacked by the Sri Lanka weevil (Myllocerus undatus). The adult weevils cause extensive feeding damage to the leaves and the subterranean larvae feed on the roots.

Image and text © 2012 Rufino Osorio

Monday, May 28, 2012

Hibiscus aculeatus – Pineland Hibiscus

Hibiscus aculeatus, pineland hibiscus, comfortroot

Hibiscus aculeatus is a perennial hibiscus native to the southeastern United States coastal plain in North Carolina, South Carolina, Georgia, Florida, Alabama, Mississippi, and Louisiana, as well as in Hardin County, Texas. In late winter or spring, it produces thick, somewhat woody, ascending to erect stems with alternate, deeply lobed, roughly hairy leaves. It begins to flower soon thereafter and can continue flowering so long as moist to wet conditions prevail. The flowers are comparatively large—note that they are larger than the leaves—and are very showy as a result of their pale yellow to creamy white color with a contrasting maroon-red eye. If pollinated by bees, butterflies, or hummingbirds, they are soon followed by rather large capsules that are covered with coarse, sharp hairs.

Hibiscus aculeatus, pineland hibiscus, comfortroot

As is apparent from its common name, pineland hibiscus frequently occurs in wet pine flatwoods, but it is also found in bogs, savannas, and roadside ditches. Unlike many other southeastern United States hibiscus, it often occurs where there is no permanent standing water and perhaps this is the reason that it is the easiest of southeastern native hibiscus to grow under ordinary garden conditions in a perennial border. Hibiscus aculeatus is extremely drought tolerant and, under adverse conditions, will produce only one or two short stems; however, under ideal conditions, it will form a large, bushy mass with many stems up to 3 feet (0.9 meters) tall and about as wide or wider. Self-sown seedlings have been few and welcomed in my dryish garden but I would imagine that it would spread from seed far more aggressively if provided with continually moist soil in sunny, open areas free from taller competing plants. In autumn or early winter, the deceptively woody stems die back to the ground and, in formal garden situations, will need to be cut down, otherwise, it requires no other maintenance. It is not particularly bothered by pests except the occasional aphid or scale, but rarely to any serious extent. Due to its ease of cultivation and value in attracting bees, butterflies, and hummingbirds, it is a welcome addition to the garden and is recommended wherever one can provide a moist, sunny spot for this attractive and easily grown hibiscus.

In Florida, Hibiscus aculeatus occurs throughout the panhandle as well as much of northern Florida, from which it extends south to Lake County. In spite of its northern distribution, it is remarkably adaptable and my original plant, first placed in the ground in February 1996, is still with me, more than 16 years later, in my southern Florida garden. Another common name for Hibiscus aculeatus is comfort root, this being an allusion to the soothing, comforting qualities of its mucilage-containing roots.

Images and text © 2012 Rufino Osorio

Psychotria nervosa – Wild-Coffee



Wild-coffee is a member of the madder family (Rubiaceae), this is the same family to which coffee, ixoras, and gardenias belong. It is a common understory shrub in tropical to warm-temperate forests in northern and peninsular Florida from Duval County south to the Florida Keys. Wild-coffee is extremely popular as a landscape plant due to its beautiful, glossy, dark green leaves with deeply impressed veins. In addition, it is easily grown, adapts well to a variety of light and soil conditions, and it is extremely drought tolerant once established, especially if growing in the shade or in a partly shaded site. The tiny creamy-white flowers are insignificant but they are lightly scented and attract a diverse array of wildlife including native bees and both large and small butterflies. The flowers are followed by conspicuous red berries that are eaten by birds and mammals. From time to time, individuals with leaves variegated with white markings are encountered, either in the wild or among cultivated plants; however, thus far, such variegated-leaved clones have not been established in general cultivation.

Image and text © 2012 Rufino Osorio

Polygala nana – Dwarf Bachelor's Button

Polygala nana, Dwarf Bachelor's Button

Image © 2012 Rufino Osorio

Sunday, May 27, 2012

Gaillardia pulchella – Firewheel

Gaillardia pulchella - Indian Blanket, Firewheel
Gaillardia pulchella has several common names, including "indian blanket" and "firewheel."

Gaillardia pulchella is an easily grown annual commonly cultivated for its showy flowers. The flowers are exceptionally attractive to native bees as well as to a wide variety of both large and small butterflies. Although commonly regarded as native to Florida, the genus is centered in the great plains of the United States. Also, Florida plants exhibit wide variation in the size, form, and color of the ray florets (the so-called petals of a daisy), and this bolsters the possibility that perhaps some populations in Florida are derived from plants that escaped cultivation. This particularly showy form was photographed on a deeply overcast day at the Native Choice Nursery in Boynton Beach on Saturday, May 26, 2012.

Image and text © 2012 Rufino Osorio

Daylilies

Hemerocallis cultivar - daylily
Day-lily flowers are usually bright and showy, but they last but a single day.

On Saturday, May 26, 2012, I stopped briefly at the garden of Robert Hopper and photographed several of the half dozen or so cultivars of day-lilies that he is growing. Garden day-lilies are derived from species of Hemerocallis, a genus native to Eurasia. One species with orange flowers, Hemerocallis fulva, is an extremely aggressive and invasive pest plant that has escaped from cultivation nearly throughout the United States and eastern Canada. A second species, Hemerocallis lilioasphodelus, with yellow flowers, is almost as widespread outside of cultivation, while Hemerocallis minor has escaped in Oregon. Due to their tendency to escape from cultivation and become invasive, gardeners should not cultivate day-lilies that regularly form seed pods or that form large vegetative colonies from underground rhizomes. Fortunately, modern hybrid cultivars have less of a tendency to become invasive since they usually do not readily form seeds and they commonly grow in better behaved clumps.

Hemerocallis cultivar - daylily
This day-lily cultivar has cheery yellow flowers and is growing with the native Florida greeneyes (Berlandiera pumila).
Images and text © 2012 Rufino Osorio