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

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hosakae by leaf and floral characteristics (Wagner et ~. 1990), However, because the known ranges of these two rare species do not overlap, no confusion is anticipated. SPECIES DESCRIPTION LiDochaeta venosa Lipochaeta venosa is a semi-woody shrub usually described as low or trailing. The semi-prostrate stems may be up to 50 centimeters (20 inches) long. The species is at least partly deciduous, reportedly losing most leaves during drought periods (Cuddihy et al. 1983). Data are insufficient to determine if leaf-drop is a predictable annual event. Leaves are generally 2 to 3 centimeters (1 inch) long, but the leaf shape is variable. Leaves are generally deltate, usually with basal lobes. Some have deeply dissected margins and others are entire. The yellow flowers occur in small heads of 4 to 6 ray florets and 20 to 30 disk florets. Seeds are often spotted with purple (Wagner ~ al. 1990). In the past, difficulties have arisen in distinguishing Lipochaeta venosa from Lii~ochaeta subcordata. The two species are closely related (Gardner 1976) and occur togetherin the Waikoloa region (Cuddihy et al. 1983). The two are differentiated by the combination of characters used in the key by Wagner ~ al. (1990) that can be summarized as follows: L. venosa has leaves generally 2.1 to 2.8 centimeters (0.8 to 1.1 inches) long, low spreading stems that may be somewhat arching, and flowering heads that are single or in clusters of two or three; L. subcordata has leaves usually 3.4 to 10 centimeters (1.3 to 3.9 inches) in length, more erect stems, and more numerous heads occurring in compound cymes. However L subcordata is extremely variable. Recognition of L. venosa can also be made difficult because it may lose its leaves during drought (Cuddihy et al. 1983). 4
. A third species, LiDochaeta lavarum, also occurs near or with L. venosa but can be easily differentiated. Isodendrion hosakae Isodendrion hosakae is a branched, upright, evergreen shrub. Reproductively mature plants range from 8 to 82 centimeters (3 to 32 inches) in height, and flowers and fruit occur on the woody stems (Cuddihy ~ al. 1983; Wagner et al. 1990). The leathery leaves are lance-shaped, 3.0 to 7.0 centimeters (1.2 to 2.8 inches) long and 0.6 to 2.0 centimeters (0.2 to 0.8 inches) wide. The stipules are persistent and conspicuously cover the ends of the stems. Like other members of the violet family, the flowers are bilaterally symmetrical. The petals are yellowish-green to white, up to 18 millimeters (0.7 inches) long. The fruit is a red-tinged, green elliptical capsule 12 to 16 millimeters (4.7 to 6.3 inches) long, containing obovoid seeds about 2 by 3 millimeters (0.08 by 0.12 inches) (Nagata 1982; Wagner ~.t al 1990). The plants are often found within the crown outline of other native shrubs or alien grass clumps suggesting that there may be a beneficial association between Isodendrion hosakae and these other plants (Cuddihy et al. 1983). HISTORIC RANGE AND POPULATION STATUS Both Livochaeta venosa and Isodendrion hosakae became known to science long after most of the native vegetation of the region was extirpated or severely altered by human use (Rock 1913). L. venosa was first collected in 1910 and named in 1933 (Sherff 1933). I. hosakae was named in 1952 from a 1948 collection (St. John 1952). Today, both species are found at all sites where they were historically known, and Lipochaeta venosa is found at one 5
Page 1 and 2: RECOVERY PLAN FOR LIPOCHAETA VENOSA
Page 3 and 4: Approve ~ Date: RECOVERY PLAN FOR L
Page 5 and 6: ACKNOWLEDGEMENTS The recovery plan
Page 7 and 8: : area precludes rehabilitation of
Page 9 and 10: 8. REASON FOR DECLINE AND CURRENT T
Page 11 and 12: I. INTRODUCTION BRIEF OVERVIEW RECO
Page 13: . been reinterpreted as Lipochaeta
Page 17 and 18: and I. hosakae and ~. venosa occur
Page 19 and 20: . Heritage Program EOCODE: PDAST5ZO
Page 21 and 22: . In 1980-82, eight plants were als
Page 23 and 24: Table 2. Phenological observations
Page 25 and 26: 1990 in a nursery at NTBG. The germ
Page 27 and 28: ) , The substrates where Isodendrio
Page 29 and 30: The percentage of total taxa that i
Page 31 and 32: mining remains a threat to these sp
Page 33 and 34: The number of plants in cultivation
Page 35 and 36: OBJECTIVE II. RECOVERY This plan pr
Page 37 and 38: . #3, estimated at 300 successfully
Page 39 and 40: not as effective as they may be els
Page 41 and 42: . Plans should require improved acc
Page 43 and 44: . cooling, and play a strong role i
Page 45 and 46: . 24. Investigate pollinators of ea
Page 47 and 48: . historically and it is not found
Page 49 and 50: LITERATURE CITED Blumenstock, D. I.
Page 51 and 52: III. IMPLEMENTATION SCHEDULE The Im
Page 53 and 54: LA PRIOR ITY TASK TASK DESCRIPTION
Page 55 and 56: 4> .5> PRIOR TASK RESPONSIBLE COST
Page 57 and 58: Appendix A. Reviewers of Draft Reco
Page 59 and 60: Environmental Protection Agency Haz
Page 61 and 62: Mr. Duane Kanuha Director, Planning
Page 63 and 64: Dr. Diane Ragone National Tropical

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