Flowering on long and short shoots of Larix laricina
in response to differential timing of [GA.sub.4/7] applications.
Wigg.--Corticolous (Larix laricina
snag, Pinus strobus, Rhus typhina).
purpurea were absent and the population of Larix laricina
was reduced to three living specimens.
Ecophysiological adaptation of black spruce (Picea mariana) and tamarack (Larix laricina
) seedlings to flooding.
On our 50 by 100-foot lot we have two eastern white cedars (Thuja occidentalis), two white spruce (Picea glauca), two larch (Larix laricina
), one bur oak (Quercus macrocarpa), one silver maple (Acer saccharinum), one basswood (Tilia americana), one green ash (Fraxinus pennsylvanica), one mountain ash (Sorbus sp.) and one northern catalpa (Catalpa speciosa).
betulus * Larch Larix laricina
* Linden Tilia species American T.
For example, Montague and Givnish (1) established that the distribution of Picea mariana (black spruce) and Larix laricina
(eastern larch) followed a fertility/moisture gradient where L.
virginiana Eastern red cedar Koelreuteria paniculata Golden raintree Lagerstroemia indica Crape myrtle Larix laricina
Tamarac Liquidambar styraciflua Sweetgum Liriodendron tulipifera Tulip tree Magnolia grandiflora Southern magnolia M.
The forest vegetation generally consists of black spruce (Picea mariana (Miller) BSP) with minor inclusions of tamarack (Larix laricina
The tamarack (Larix laricina
) grows on the wettest soils, and the preferred habitat of the balsam fir (Abies balsamea) is on the banks of lakes and rivers.
With a greenhouse experiment we investigated these relationships by examining responses of growth, growth-related morphology, survival, and their interrelationships to a range of nitrogen (3.4 X [l0.sup.-9]-3.4 X [l0.sup.-3] mol/L N fertilizer solutions) and low light (0.6-7.3% of open sky) availabilities for young seedlings of 10 North American tree species that vary in observational shade tolerance rankings and seed size (Populus tremuloides, Betula papyrifera, Betula alleghaniensis, Acer saccharum, Larix laricina
, Pin us banksiana, Pinus resinosa, Pinus strobus, Picea mariana, and Abies balsamea).
It passes through a green world of sphagnum moss, ferns, pitcher plants, mountain holly and trees adapted to the wet environment: black spruce (Picea mariana), tamarack (Larix laricina
), Northern white cedar (Thuja occidentalis) and balsam fir (Abies balsamea).
Seed dispersal, seedling emergence, and early survival of Larix laricina
The poorer vigor of progenies from nearest neighbor crosses, relative to longer distances crosses, has been interpreted as inbreeding depression and an indirect measure of relatedness in Picea glauca (Coles and Fowler 1976; Park and Fowler 1984), Larix laricina
(Park and Fowler 1982), and a number of small perennial species (e.g., Waser and Price 1989; Hauser and Loeschcke 1994; Waser and Price 1994), but has not been detected in some populations of short-lived plants (McCall et al.