RECOVERY PLAN FOR - U.S. Fish and Wildlife Service

.
In 1980-82, eight plants were also counted near Site #2 in
approximately 30 square meters (300 square feet) (Cuddihy et al
1983). The population near Site #2 has apparently not been
revisited since 1982. Its current status is not known.
Only two Isodendrion hosakae plants are known in cultivation, and
there are no other germ plasm reserves.
LIFE HISTORY
Reproductive Biolojv of Lipochaeta venosa
The reproductive biology of Lipochaeta venosa has never been
directly studied. Hybridization and systematic studies of
Lipochaeta have yielded limited data. Species of this genus are
usually both self-compatible and capable of out-crossing. The
flowers are not adapted for specialized pollination and, like most
members of the Asteraceae family, appear to be pollinated by
non-specific insects (Gerald Carr, University of Hawaii at Manoa,
pers. comm. 1992). Number of seeds produced per plant and other
aspects of seed biology are not known.
Cuttings of all species of Linochaeta tested were easily rooted in
greenhouse cultivation forming adventitious roots at many nodes
(C. Carr, pers. comm. 1992). L. venosa has been grown from
cuttings in the DOFAW Hilo Baseyard nursery (S. Bergfeld, pers.
comm. 1992). It is likely that vegetative reproduction occurs in
nature.
Life Stares and Demo~ra~hv of Lipochaeta venosa
No population structure information is available for Li~ochaeta
venosa. Field observations consist only of counts of individuals
with no enumeration by size class or life stage (Cuddihy et al.
1983). Nothing is known about growth rates, age at reproductive
maturity, or longevity of L. venosa in nature.
11