Chamaedaphne


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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Chamaedaphne

 

(also Cassandra), a genus of evergreen shrubs of the family Ericaceae. The plants are 17 to 100 cm tall. The leathery leaves and the branchlets are covered on both sides with peltate scales. The flowers are white, gamopetalous, urceolate-campanulate, and drooping; they are gathered in unilateral leafy racemes at the ends of the branches. The fruit is a capsule. The genus has one species—the leatherleaf (C. calyculata) —which grows in Northern Eurasia, North America (as far south as the Allegheny Mountains), and, less commonly, Japan. The leatherleaf is typical of tundras and upstream, mainly sphagnum, swamps; it is also found in damp forests and along rivers and lakes. The leaves and young shoots contain the glycoside andromedotoxin, which is poisonous to sheep and goats.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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The rhizospheres of several species examined at multiple sites were NA positive regardless of habitat: Carex lacustris, Chamaedaphne calyculata, Typha angustifolia, and Vaccinium macracarpon (Table 1).
Nitrogenase Activity (a) per [m.sup.2] Site Plant species n per g root (x[10.sup.2]) Fern Lake Bog Chamaedaphne 3 59.0 205.5 calyculata Spbagnum spp.
X X Dulichium arundinaceum Fuirena pumila Ceratophyllum demersum X Nuphar advena X X Nymphaea odorata X Brasenia schreberi X Sarracenia purpurea Impatiens capensis Myriophyllum exalbescens X Andromeda glaucophylla Chamaedaphne calyculata Vaccinium macrocarpon Menyanthes trifoliata Bidens sp.
These include cottongrass (Eriophorum virginicum), leatherleaf (Chamaedaphne calyculata), pitcher plant (Sarracenia purpurea), sundew (Drosera rotundifolia), pink lady slipper orchid (Cypripedium acaule), and of course, tamaracks (Larix laricina) (Larsen 1982).
However, based on stratigraphy and radiocarbon dating, leatherleaf (Chamaedaphne calyculata) dominated peatlands made the transition from lake to peatland between 2250-5550 [C.sup.14] ybp earlier than other types of peatlands, both Sphagnum-dominated and non-Sphagnum-dominated (Fig.
The presence of subfossils of Sarracenia purpurea, Chamaedaphne calyculata and Vaccinium corymbosum indicate an acidic leatherleaf bog much like that of the extant community.
magellanicum, Chamaedaphne calyculata, Scirpus cyperinus, Rubus hispidus, Vaccinium corymbosum, Aronia melanocarpa and Cephalanthus occidentalis.
bartlettianum, Chamaedaphne calyculata, Carex oligosperma and Woodwardia virginica.
Characteristic plants included Andromeda glaucophylla, Betula pumila, Carex oligosperma, Carex trisperma, Chamaedaphne calyculata, Coptis trifolia, Drosera spp., Larix laricina, Menyanthes trifoliata, Potentilla fruticosa, Sarracenia purpurea, Sphagnum spp., Vaccinium macrocarpon, and V.
Extremely mineral-rich fens in Indiana are characterized by a dense, low growth of Potentilla fruticosa, the fen counterpart of Chamaedaphne calyculata.
These sites had a well-developed shrub layer of either Vaccinium corymbosum or Chamaedaphne calyculata and a ground layer of Sphagnum moss.
The wet site had three taxa (Chamaedaphne calyculata, Vaccinium corymbosum and Sphagnum spp.) that were unique to the site and a high percentage of Kalmia angustifolia (Table 2).