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Title: Wood Anatomy of Hawaiian and New Guinean Species of Tetramolopium (Asteraceae): Ecological and Systematic Aspects 
Author: Carlquist, Sherwin; Lowery, Timothy K.
Date: 2003-04
Publisher: University of Hawai'i Press
Citation: Carlquist S, Lowery TK. 2003. Wood anatomy of Hawaiian and New Guinean species of Tetramolopium (Asteraceae): ecological and systematic aspects. Pac Sci 57(2): 171-179.
Abstract: Qualitative and quantitative features are reported for five Hawaiian
and one New Guinean species of Tetramolopium. Tetramolopium humile differs
from the other Hawaiian species in its numerous narrow vessels, numerous
vasicentric tracheids, and wide rays. Although these features are adaptive in the
dry alpine localities of T. humile, they would be adaptive also in the remaining
species, which are from dry to moderately dry lowland localities. Thus, one can
consider these features of T. humile as systematic indicators. The wood of T.
pumilum (New Guinea) has distinctive wide, tall rays that may be related to the
short stems in this species; T. pumilum has wood more mesomorphic than that of
any of the Hawaiian species. Within Hawaiian Tetramolopium, wood anatomy
correlates with dryness of habitat. The species of Tetramolopium studied have
highly xeromorphic wood in comparison with woods of dicotyledons at large.
ISSN: 0030-8870

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