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

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.<br />

A third species, LiDochaeta lavarum, also occurs near or with L.<br />

venosa but can be easily differentiated.<br />

Isodendrion hosakae<br />

Isodendrion hosakae is a branched, upright, evergreen shrub.<br />

Reproductively mature plants range from 8 to 82 centimeters (3 to<br />

32 inches) in height, <strong>and</strong> flowers <strong>and</strong> fruit occur on the woody<br />

stems (Cuddihy ~ al. 1983; Wagner et al. 1990). The leathery<br />

leaves are lance-shaped, 3.0 to 7.0 centimeters (1.2 to 2.8<br />

inches) long <strong>and</strong> 0.6 to 2.0 centimeters (0.2 to 0.8 inches) wide.<br />

The stipules are persistent <strong>and</strong> conspicuously cover the ends of<br />

the stems. Like other members of the violet family, the flowers<br />

are bilaterally symmetrical. The petals are yellowish-green to<br />

white, up to 18 millimeters (0.7 inches) long. The fruit is a<br />

red-tinged, green elliptical capsule 12 to 16 millimeters (4.7 to<br />

6.3 inches) long, containing obovoid seeds about 2 by 3<br />

millimeters (0.08 by 0.12 inches) (Nagata 1982; Wagner ~.t al<br />

1990).<br />

The plants are often found within the crown outline of other<br />

native shrubs or alien grass clumps suggesting that there may be a<br />

beneficial association between Isodendrion hosakae <strong>and</strong> these other<br />

plants (Cuddihy et al. 1983).<br />

HISTORIC RANGE AND POPULATION STATUS<br />

Both Livochaeta venosa <strong>and</strong> Isodendrion hosakae became known to<br />

science long after most of the native vegetation of the region was<br />

extirpated or severely altered by human use (Rock 1913). L.<br />

venosa was first collected in 1910 <strong>and</strong> named in 1933 (Sherff<br />

1933). I. hosakae was named in 1952 from a 1948 collection (St.<br />

John 1952).<br />

Today, both species are found at all sites where they were<br />

historically known, <strong>and</strong> Lipochaeta venosa is found at one<br />

5

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