RECOVERY PLAN FOR - U.S. Fish and Wildlife Service
RECOVERY PLAN FOR - U.S. Fish and Wildlife Service
RECOVERY PLAN FOR - U.S. Fish and Wildlife Service
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Phenolo~v of Lii~ochaeta venosa<br />
A phenological pattern can be pieced together from scant<br />
information available from herbarium labels <strong>and</strong> other<br />
observations, particularly Cuddihy ~ ~j. (1983). The following<br />
generalization is based on a total of 15 observations unevenly<br />
distributed throughout the year (Table 2). Twelve of these<br />
observations were made in the period of 1980-1982 at various<br />
cinder cones. This generalized pattern is based on consistent<br />
observations in more than 1 year.<br />
It appears that many plants are flowering in March, but flowering<br />
is much reduced by June. Seeds were observed as early as April<br />
<strong>and</strong> are present on many plants in June. No flowering was observed<br />
in September or October. In these autumn months the plants were<br />
described as “dry,” with only dried inflorescences. Cuddihy ~<br />
al. (1983) comment that during dry periods, Livochaeta venosa is<br />
hard to find because it is dry with few leaves. It is possible<br />
that this phenological pattern is not a seasonal rhythm, but<br />
rather a response to climatic conditions. Herbst (1979) suggests<br />
that flowering is brought on by winter rains.<br />
12
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