Kalmia latifolia was widespread and tall, averaging 80% cover and 2 m in height, respectively.
The final cohort developed between 1955 and 1990 and was a mix of Kalmia latifolia, Pinus pungens, and Acer rubrum, but no Quercus species.
Of these three species, the two tree species generally established during the 1950s and 1960s while Kalmia latifolia continued to establish throughout the entire period.
Autogamy and inbreeding depression in mountain laurel, Kalmia latifolia
A KALMIA Latifolia
(Calico bush) is a native of North America and has to be grown in acid soil.
Although Kalmia latifolia is traditionally considered an outcrossing species, the frequency of delayed autonomous self-pollination ("selfing") has been shown to vary among populations.
Kalmia latifolia flowers are thought to depend exclusively on bumblebees for pollination, therefore limited pollinator visits may reduce reproductive success.
We tested the hypothesis raised by Rathcke and Real (1993) that selfing increases reproductive success in a Virginia population of Kalmia latifolia.
Between 1960 and 1965, Kalmia latifolia, Rhododendron maximum, and other hardwood sprouts were suppressed with spot applications of 2,4-D[(2,4-dichlorophenoxy) acetic acid] to maintain the watershed in grass cover (Hibbert, 1969).
Before conversion to grass in 1958, Kalmia latifolia, Rhododendron maximum, and Quercus prinus were the three most abundant woody species in WS6; when combined, they occupied 53.
In addition, the species importance values [ILLUSTRATION FOR FIGURE 5 OMITTED] indicate that some species, among them Gaylussacia, Kalmia angustifolia, Pteridium, Vaccinium pallidum and the scrub oak occur mostly on sandy sites, while Kalmia latifolia
, Vaccinium angustifolium and white pine occur mostly on rocky sites.