AWF Home
AWF Home
AWF Home
About AWF Conservation Education Resource Stewardship Hunting/Angling Heritage
AWF Home

Visit Lanark
Search this Site:



linklogo

 

Intro | History | Physiography | Wetland Habitat | Plants | Wildlife | Recreation

Plants

The Mobile-Tensaw River Delta is host to many special plants. Among some of the rare plants known to occur in this area is the green-fly orchid, Epidendrum conopseum, the only epiphytic orchid known to occur in the state. Epiphytes are plants that grow on other plants, not as parasites, but using the host plant as a place to grow while getting nutrients from rain and dust. Green-fly orchid has been collected in only 10 counties in Alabama. It has been found growing in the swamps of the Mobile Delta and enjoys a diversity of hardwood tree hosts, including live oaks, southern magnolias, swamp tupelo, and bald cypress. Bottoms supporting this species are usually shaded and moist, allowing epiphytes to flourish.

Green-fly orchid may be more abundant than known records indicate. Small plants attached to the limbs of trees often escape notice, especially those camouflaged by resurrection fern, Polypodium polypoides, and Spanish moss, Tillandsia usneoides. Green-fly orchid blooms in July. The scientific name Epidendrum means “tree-dweller” and conopseum means “gnat-like”.

The southern rein orchid, Platanthera flava, is another engaging orchid found in the Delta, usually blooming in May. This tiny orchid is typically found in wet and frequently shaded situations. The southern rein orchid is found over most of the United States east of the Mississippi River drainage except south Florida. After pollination, the ovaries of this species swell quickly, well before the flower begins to wilt. At this time each yellowish-green southern rein orchid flower appears to be growing from an oval jade vase.

Tiny-leaved buckthorn, Sageretia minutiflora, one of the rarest shrubs in the United States, is also known to occur in the delta. Its specific habitat is found on and around the calcareous shell mounds in the Mobile-Tensaw Delta, as well as on Little Dauphin Island and Dauphin Island. This shrub blooms in September and has very fragrant flowers.

The rare sarvis holly, Ilex amelanchier, has been reported from only 3 counties in Alabama, Mobile, Washington and Baldwin. It occurs in woodlands astride creeks, river floodplain forests and cypress-gum swamps. It is found in the sub-canopy under red maple, tupelo gum and cypress. Sarvis holly is a difficult plant to locate when not in fruit, especially after losing its leaves. It is one of the rarest hollies in the state.

Loblolly bay, Gordonia lasianthus, not to be confused with sweetbay, Magnolia virginiana, which is also called bay, is found only in Baldwin, Covington, Geneva, and Mobile counties in Alabama. Loblolly bay is found in swamps, bogs, hammocks and bays along the southern coastal plain, from southern Virginia, west to Louisiana, and south to Lake Okeechobee in peninsular Florida. The flowers are fragrant, showy and white, about two to three inches across, and are open in midsummer for a period of several weeks. The loblolly bay is botanically related to the tea plant of Asia. This tree is a beautiful evergreen, growing up to 70 feet in height, with leathery oblong leaves that are dark green above and paler below.


Rare Plants of the Delta
Scientific Name Common Name

Acorus americanus

sweetflag

Brachiaria platyphylla

broad-leaf signalgrass

Canna flaccida

golden canna

Celtis iguanaea

iguana hackberry

Cleistes divaricata

rosebud orchid

Coreopsis gladiata

coastal plain coreopsis

Epidendrum conopseum

green-fly orchid

Gordonia lasianthus

loblolly bay

Hibiscus coccineus

scarlet hibiscus

Hypericum nitidum

Carolina St. John’s-wort

Ilex amelanchier

sarvis holly

Juncus gymnocarpus

naked-fruited rush

Kalmia hirsuta

hairy laurel

Ludwigia arculata

piedmont seedbox

Lygodium palmatum

American fern R

Orobanche uniflora

one-flowered cancer-root

Panicum nudicaule

naked-stemmed panic grass

Piers phillyreifolia

climbing fetter-bush

Pinguicula primulifolia

southern butterwort

Pinguicula planifolia

Chapman’s butterwort

Plantanthera flava

southern rein orchid

Plantanthera integra

yellow fringeless orchid

Ponthieva racemosa

shadow-witch

Populus heterophylla

swamp cottonwood

Potamogeton robbinsii

Robbin’s pondweed

Rhapidophyllum hystrix

needle palm

Rhododendron austrinum

orange azalea

Rhynchospora crinipes

hairy-peduncled beak rush

Selaginella ludoviciana

Gulf spiked-moss

Xyris drummondii

Drummond’s yellow-eyed grass

Xyris scabrifolia

Harper’s yellow-eyed grass


Back To Top
Sign up for the Alabama Wildlife Federation eNewsletter!
Email:

Alabama Wildlife Federation
3050 Lanark Road
Millbrook, AL 36054
1-800-822-9453
awf@alabamawildlife.org