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''Pritchardia beccariana'', the Kilauea pritchardia, or Beccari's loulu, is a species of
palm tree The Arecaceae is a family of perennial flowering plants in the monocot order Arecales. Their growth form can be climbers, shrubs, tree-like and stemless plants, all commonly known as palms. Those having a tree-like form are called palm trees ...
in the genus ''
Pritchardia The genus ''Pritchardia'' (family Arecaceae) consists of between 24 and 40 species of fan palms (subfamily Coryphoideae) found on tropical Pacific Ocean islands in Fiji, Samoa, Tonga, Tuamotus, and most diversely in Hawaii. The generic name ho ...
'' that is
endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...
to wet forests on the eastern part of the
island of Hawaii Hawaii ( ; haw, Hawaii ) is the largest island in the United States, located in the state of Hawaii. It is the southeasternmost of the Hawaiian Islands, a chain of volcanic islands in the North Pacific Ocean. With an area of , it has 63% of th ...
, near
Hilo Hilo () is a census-designated place (CDP) and the largest settlement in Hawaii County, Hawaii, Hawaii County, Hawaii, United States, which encompasses the Hawaii (island), Island of Hawaii. The population was 44,186 according to the 2020 United ...
.


Description

This species reaches a height of , with a smooth, grayish trunk between in diameter. The 25–30
leaves A leaf (plural, : leaves) is any of the principal appendages of a vascular plant plant stem, stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", wh ...
are wide and equally long, held on petioles in length which are moderately covered along both edges at the base in medium tan fibers. The large, flat and rounded leaves are divided 1/5-1/4 into many stiff-tipped segments, with the abaxial surface incompletely covered with scattered fuzz. The
inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...
s are composed of 2-4
panicle A panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a panicle are of ...
s, shorter than or equalling the petioles in length. The panicles are branched to 3 orders, with scruffy
indumentum In biology, an indumentum (Latin, literally: "garment") is a covering of trichomes (fine "hairs") on a plant Davis, Peter Hadland and Heywood, Vernon Hilton (1963) ''Principles of angiosperm taxonomy'' Van Nostrandpage, Princeton, New Jersey, pa ...
in flower and glabrous in fruit. The flowers are followed by large, black oval to spherical fruits about long and wide when mature. It grows at elevations of where it receives greater than of rainfall per year. It was historically present at lower elevation, likely as low as sea level, but urbanization and farming have destroyed all of the forest at lower elevations. It is threatened by
habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ...
, weed invasion, and prevention of seedling recruitment by
rats Rats are various medium-sized, long-tailed rodents. Species of rats are found throughout the order Rodentia, but stereotypical rats are found in the genus ''Rattus''. Other rat genera include ''Neotoma'' (pack rats), ''Bandicota'' (bandicoot ...
and pigs.


History

Joseph Rock Joseph Francis Charles Rock (1884 – 1962) was an Austrian-American botanist, explorer, geographer, linguist, ethnographer and photographer. Life Josef Franz Karl Rock was born in Vienna, Austria, the son of a steward of a Polish count. As a r ...
found ''Pritchardia beccariana'' in December 1914 by Glenwood near
Kīlauea Kīlauea ( , ) is an active shield volcano in the Hawaiian Islands. Located along the southeastern shore of the Big Island of Hawaii, the volcano is between 210,000 and 280,000 years old and emerged above sea level about 100,000 years ago. Hi ...
at about elevation and formally named and described it in 1916, honoring his friend and coworker
Odoardo Beccari Odoardo Beccari (16 November 1843 – 25 October 1920) was an Italian botanist famous for his discoveries in Indonesia, particularly New Guinea, and Australia. He has been called the greatest botanist to ever study Malesia. His author abbreviat ...
. Rock informed Beccari that the palm "is a beautiful palm of fine symmetry... a very distinct species and very different from any other ''Pritchardia'' known to me. The leaves resemble more those of Pritchardia pacifica than any other Hawaiian species." Rock later collected and sent more material of another ''Pritchardia'' to Beccari, this time from 4,200 feet elevation and very close to Kīlauea on land opposite the residence of Walter M. Giffard, who helped to collect the specimens. Because this ''Pritchardia'' from higher elevations differed from ''Pritchardia beccariana'' in its smaller habit and size of leaves, flower, fruit stalks and fruits, Rock urged Beccari to name and describe it as a new species. However, Beccari felt that the differences were probably due to the higher elevation where they grew. Thus, Beccari concluded that the differences were insufficient to erect a new species, although he did establish the variety ''giffardiana'' to honor Giffard and recognize its smaller stature.


Cultivation and uses

Native Hawaiians valued the fruits of ''Pritchardia'' as a food source. The immature fruits, called ''hāwane or wāhane,'' were gathered and the
endosperm The endosperm is a tissue produced inside the seeds of most of the flowering plants following double fertilization. It is triploid (meaning three chromosome sets per nucleus) in most species, which may be auxin-driven. It surrounds the embryo and ...
was eaten (tasting like coconut meat). Leaves were also collected to use for thatching roofs, as well as for making fans, umbrellas, hats, and baskets. The trunks were also used for making spears and as material for construction. ''Pritchardia beccariana'' is also grown with some level of success as a landscape palm in
tropical The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ...
and
subtropical The subtropical zones or subtropics are geographical zone, geographical and Köppen climate classification, climate zones to the Northern Hemisphere, north and Southern Hemisphere, south of the tropics. Geographically part of the Geographical z ...
areas. Hawaiian ''Pritchardia'' are especially popular among growers and collectors in subtropical areas or in regions with a
Mediterranean climate A Mediterranean climate (also called a dry summer temperate climate ''Cs'') is a temperate climate sub-type, generally characterized by warm, dry summers and mild, fairly wet winters; these weather conditions are typically experienced in the ...
, such as
southern California Southern California (commonly shortened to SoCal) is a geographic and Cultural area, cultural region that generally comprises the southern portion of the U.S. state of California. It includes the Los Angeles metropolitan area, the second most po ...
,
Southern Europe Southern Europe is the southern regions of Europe, region of Europe. It is also known as Mediterranean Europe, as its geography is essentially marked by the Mediterranean Sea. Definitions of Southern Europe include some or all of these countrie ...
, and
southern Australia The term Southern Australia is generally considered to refer to the states and territories of Australia of New South Wales, Victoria, Tasmania, the Australian Capital Territory and South Australia. The part of Western Australia south of lati ...
, because they are more tolerant of cooler temperatures than their South Pacific counterparts. Indeed, ''Pritchardia beccariana'' bears a striking resemblance to the handsome and acclaimed Fiji fan palm and even another south Pacific species, Thurston's fan palm.


Gallery

Pritchardia beccariana (4761434315).jpg Pritchardia beccariana (4762066774).jpg Pritchardia beccariana (4761432521).jpg Pritchardia beccariana (4761432061).jpg


References


External links

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Palmpedia
{{Taxonbar, from=Q15468983 beccariana Trees of Hawaii Endemic flora of Hawaii Plants described in 1916