Pacific Science Volume 24, Number 3, 1970

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Pacific Science is a quarterly publication devoted to the biological and physical sciences of the Pacific Region.

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    Materials for a Monograph of Freycinetia Gaud. (Pandanaceae) XIII A New Species from Ternate Island, Moluccas
    (University of Hawai'i Press, 1970-07) Stone, Benjamin C.
    Among the rich collections of Pandanaceae in the herb aria of Bogor (BO) and Leiden (L) are numerous specimens of Freycinetia collected in Ternate by V. M. A. Beguin. The greater part of these represent a species which had been given a new name in manuscript by C. A. Backer, but which he evidently never published; this name was based on the name of the island Ternate. Recently (Stone, 1970) I have described this as a new species, closely related to Freycinetia insignis Blume. Not all the specimens collected by Beguin are of this species, however, and the several mentioned here appear to represent a different species, not very close to F. insignis (which pertains to Sect. Blumeella), but rather to F. arborea Gaud . and its nearest relatives, which together form Sect. Freycinetia. In this paper the name Freycinetia leptostachya is proposed for th is interesting new endemic of Ternate.
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    Some Shoot and Cone Characteristics of Taiwan Red Pine
    (University of Hawai'i Press, 1970-07) Lanner, Ronald M. ; Hinkle, E.H.
    Taiwan red pine (Pinus taiwanensis Hayata) is endemic to the island of Taiwan, or Formosa (Li, 1963). It is one of the so-called uninodal pines - that is, its winter bud elongates to form an unbranched axis bearing lateral long shoot buds only near the distal end. However, it is remarkably prone to lammas growth or summer shoots (premature elongation of a newly formed dormant bud) and to several other anomalous forms of behavior. Some of these strongly affect tree form; others are economically unimportant but serve to illustrate further the morphological plasticity within the genus Pinus. The observations reported here were made in early March 1969, in natural stands, plantations, nurseries, and a seed orchard.
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    Some Implications of Precocious Flowering in Collospermum
    (University of Hawai'i Press, 1970-07) Moore, Lucy B.
    In heteroblastic development the juvenile and adult phases of a plant have the same genotype but the phenotypes are different, and Cook (1968, p. 97), noting that such phenotypic plasticity has undoubtedly led to a large number of "paper species," finds it rather shocking that so little information on phenotypic modification is. presented in formal taxonomic work. In the case here described, in the Pacific genus Collospermum (Liliaceae), a single plant can, during its lifetime, display contrasts comparable to some that characterize species or sections in the closely related genus Astelia.
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    Lichens from the Southern Alps, New Zealand: Records from Phipps Peak, The Two Thumbs, and the Tasman Valley
    (University of Hawai'i Press, 1970-07) Fineran, B.A. ; Dodge, C.W.
    The taxonomy, ecology, and regional distribution of lichens in New Zealand are imperfectly known (Galloway, 1966, 1968a, 1968b; Martin, 1966, 1968). In surveying the scattered literature, Galloway (1966) found that very little work had been done on alpine lichens. In his account he lists 150 species collected between about 2,600 and 6,060 feet from three sites in the Humboldt mountains, Fiordland. Earlier, J. Scott Thomson is known to have collected lichens from peaks in Otago and elsewhere in the South Island (see Zahlbruckner, 1941). Philipson and Brownlie (1958) have also recorded several species from mountains in the environs of Cass, Canterbury. Undoubtedly other collections have been made from alpine regions by local and visiting collectors, but few records have been published.
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    Successional Trends in the Coastal and Lowland Forest of Mauna Loa and Kilauea Volcanoes, Hawaii
    (University of Hawai'i Press, 1970-07) Atkinson, IAE
    Three trends in forest succession are described from the coastal and lowland lava flows (<1,000 feet) of Mauna Loa and Kilauea in Hawaii. All begin on bare rock in a region of high rainfall (75 to 150 inches). One trend is in coastal forest and involves the replacement of Metrosideros polymorpha vegetation by Pandanus tectorius forest. The other trends occur inland and give rise to Metro-, sideros polymorpha and Metrosideros polymorpha/Diospyros ferrea forests with in 400 years. No consistent differences in successional trends were observed between pahoehoe and aa flows. Seasonal distribution of rainfall was considered to be important in differentiating the Metrosideros/Diospyros succession, while exposure to wind-carried salt may differentiate the Pandanus succession . There is need to protect representative areas of these forests for future study.
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