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Yellow-band disease is a bacterial infection that spreads over coral, causing the discolored bands of pale-yellow or white lesions along the surface of an infected coral colony. The lesions are the locations where the bacteria have killed the coral's symbiotic photosynthetic algae , called zooxanthellae which are a major energy source for the ...
Heuchera sanguinea, called coral bells, is a species of flowering plant in the genus Heuchera, native to the US states of Arizona and New Mexico, and to northern Mexico. [2] A number of cultivars are commercially available. [3] The Latin specific epithet sanguinea means blood-red, in reference to the color of the flowers. [4]
Heuchera (/ ˈ h juː k ɪ r ə / HEW-kih-rə [2] or / ˈ h ɔɪ k ə r ə / HOY-kih-rə [3]) is a genus of largely evergreen [4] perennial plants in the family Saxifragaceae. All species are native to North America except for Heuchera sichotensis, native to the Russian Far East. [5] Common names include alumroot and coral bells. [6]
Heuchera cylindrica is a species of perennial flowering plant in the saxifrage family known by the common names poker alumroot, roundleaf alumroot, and coral bells. It is native to western North America, where it is found from British Columbia to California, and east to Wyoming and Montana.
The band can move across the surface of the colony at the rate of a few millimeters a day, leaving behind bleached skeletal material. [9] The physical coloration of coral is an easy way of identifying some pathogens, since many diseases are identified by their most obvious symptoms such as black band disease, white pox and yellow-band disease. [10]
Heucherellas take their brilliant foliage colors from the Heuchera parents and the dark leaf patterns and cut-leaf shapes from the Tiarella parents. They are often called by their botanical name × Heucherella, but the common name in the USA is "foamy bells" because the common names of the parent plants are "coral bells", and "foam flower" respectively.
Heuchera americana, or American alumroot (also called Coral bells or Rock geranium), is a small (under 2 ft. high and wide) evergreen perennial native to eastern and central North America while also ranging into Ontario, Canada. It is a part of the Saxifrage family.
Heuchera maxima is a species of flowering plant in the saxifrage family, known by the common names island alum root, Channel Islands coral bells, and Jill of the rocks. It is endemic to the four northern Channel Islands of California, within Channel Islands National Park. It grows on canyon cliffs in coastal sage scrub habitats. [1]