Clethra


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Clethra

 

a genus of evergreen and deciduous trees or shrubs of the family Clethraceae. The leaves are entire and alternate. The blossoms are five-membered. There are about 30 species, distributed in North and South America, South and East Asia, on the Canary Islands, and on the island of Madeira. Species of Clethra are ornamental; C. alnifolia and C. acuminata are cultivated in the USSR. The lily-of-the-valley tree (C. arborea ), a low evergreen with oblanceolate leaves and racemes of fragrant white flowers that resemble the flowers of lily of the valley (hence the name), is cultivated in greenhouses and grows wild on Madeira.

REFERENCE

Derev’ia i kustarniki SSSR, vol. 5. Moscow-Leningrad, 1960.
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References in periodicals archive ?
Only one specimen of Clethra alnifolia (Summer Sweet) and one of Hammamelis virginiana (Witchazel) displayed poor vigor with wilting, yellow, and low leaf density.
Of the 29 specimens situated in the non-irrigated plot, four species Clethra alnifolia, Hammamelis virginiana, Itea virginiana, and Mtrica pennsylvanica, lacked vigor with deaths of both specimens.
The relationship of Cyrilla and Clethra to Ericaceae in this analysis differs from that obtained in a larger rbcL analysis (Morton et al.
The relationships of potential sister groups, Actinidia, Clethra, and Cyrilla, found in this analysis of 18s, matK, and rbcL have been supported in a recent study by Anderberg et al.
Violett Ozark, Castanea ozarkensis, 1989 Stuart Knight CHOLLA Jumping, Opuntia fulgida, 1995 Ken Morrow CINNECORD Acacia choriophylla, 1986 14 20 24 40 CLETHRA Cinnamon, Clethra acuminata, 1995 [*] 10 33 12 46 Cinnamon, Clethra acuminata, 1997 [*] 9 29 10 41 CLIFFROSE Cowania mexicana, 1998 15 30 12 48 CLUSIA Florida, Clusia rosea, 1995 25 40 37 74 COCONUT Palm, Cocos nucifera, 1979 [delta] 60 93 27 159 COFFEETREE Kentucky, Gymocladus dioicus, 1999 187 84 80 291 CONDALIA Bitter, Condalia globosa, 1995 28 19 25 53 CORALBEAN Southeastern, Erythrina herbecea, 1995 40 32 30 79 Southwestern, Erythrina flabelliformis, 1999 11 15 12 29 CORKWOOD Leitneria floridana, 1989 [+] 8 16 7 26 COTTONWOOD Black, Populus trichocarpa, 1995 320 158 110 506 Eastern (typ.
But in a few taxa-for example, Gleditsia triacanthos (Tucker, 1991); species of Clethra, Juglans, Digitalis, Convallaria, Campanula, and Pyrola (Eames, 1961 )--racemes usually have a terminal flower, whereas others in some of the same genera (G.
Of these mighty midgets, only the cinnamon clethra in Great Smoky Mountains National Park reaches higher than 30 feet, and only the jumping cholla of Mesa, Arizona, and the Florida elder of Marion County, Florida, have diameters exceeding eight inches.
Clethra alnifolia, a widely distributed wetland shrub in eastern North America, regenerates more commonly on logs, tree roots, and stumps than on other, more common microsites (Jordan & Hartman, 1995).
Safe sites and the regeneration of Clethra alnifolia L.
1 F Cardiopteridaceae Cardiopteris Aquifoliales D 0 0 0 Clethraceae Clethra Ericales 0 0 0 2 Columelliaceae Columellia 0 ?