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Bald Head Island

Sponsored by the Southeast Coast chapter

Sunday, September 12, 2010

Dr. Paul Hosier leads the group at Bald Head Island


Dr. Hosier explains barrier island dynamics at Bald Head Island with his portable classroom


Dr. Hosier explains dune stabilization


Ammophila breviligulata

American beachgrass

planted to stabilize the dunes although not native to this area


Chamaesyce polygonifolia

northern seaside spurge

close-up showing sand grains burying C.polygonifolia


Making our way across the dune

Uniola paniculata, sea oats, swaying in the breeze


Dune "cross section"

Dune showing depth of sea oat's roots and the cross layers of sand blown in from different directions


Hydrocotyle bonariensis

seaside pennywort in fruit

flower keeps elongating to produce new umbels


Passiflora lutea

yellow passion flower


Croton punctatus

silver leaf croton


Trichostema dichotomum

blue curls


Commelina erecta

dayflower


Exploring the back dunes


washover fan

shells get dumped by a washover and form a desert pavement, a hard surface that prevents further sand movement


Triplasis Purpurea

purple sandgrass


Field notes


Opuntia humifusa

eastern prickly pear cactus


Zanthoxylum clava-herculis

Hercules' club; toothache-tree

larval plant for giant swallowtail


Chamaesyce bombensis

southern seaside spurge

C. polygonifolia usually grows closer to water


Persea borbonia

growth is forced in the downwind direction due to the killing effect of the salt spray


Geastrum sp.

earth star mushroom


Setaria magna

Giant foxtail grass


The Maritime Forest


Baccharis halimifolia

groundsel-tree


Ilex vomitoria

yaupon holly


Juniperus virginiana

red cedar (southern var.)


Toxicodendron radicans

don't touch!

also some Smilax and Morella cerifera (wax myrtle)


Quercus virginiana

live oak


Osmanthus americanus

wild olive; devilwood


The Salt Marsh

you can see Pluchea and Salicornia in the foreground (if you look closely)


Pluchea odorata

southern saltmarsh fleabane


Salicornia virginica

glasswort


Taking a break in the shade


Sabal palmetto

cabbage palmetto


Marsh grasses

Distichlis spicata (salt grass) along with Spartina alterniflora and Juncus sp. are found in the salt water marsh


Sesuvium maritimum

slender seapurslane


Wading through the marsh


Sabatia stellaris

marsh pink


Cynanchum angustifolium, also C. palustre

sand-vine, gulf coast milkvine, gulf coast swallowort, vine milkweed (belongs to milkweed family, Asclepiadaceae)

a tangle of Cynanchum


Pityopsis sp.


Diodia sp.

buttonweed, probably D. teres


Cyperus strigosus

flatsedge


Thank you!

Thanks to everyone who made this trip possible, especially Dr. Paul Hosier of UNCW and Maureen Dewire, BHIC Director of Education, and everyone at the Bald Head Island Conservancy!
See you next time grin


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