| 词条 | Eucalyptus pachyloma |
| 释义 |
|name = Kalgan Plains mallee |image = |status = |status_system = |genus = Eucalyptus |species = pachyloma |authority = Benth. |}}Eucalyptus pachyloma, commonly known as Kalgan Plains mallee, is a mallee that is native to Western Australia.[1] DescriptionThe mallee typically grows to a height of {{cvt|1|to|4|m}} and has smooth[1] grey-brown to green coloured bark and forms a lignotuber. The concolorous, glossy, green adult leaves are erect and alternately arranged. The leaf blade is usually a lanceolate shape with a length of {{cvt|5.8|to|10.8|cm}} and a width of {{cvt|0.7|to|1.8|cm}} with a pointed apex and a base that tapers to the petiole.[3] It blooms between October and March producing white to cream coloured flowers.[1] Each axillary unbranched inflorescence has umbels containing seven to thirteen buds. The ovoid to globular shaped mature buds have a length of {{cvt|0.7|to|1.0|cm|abbr=on}} and a width of {{cvt|0.6|to|0.9|cm|abbr=on}} with no scar. The single operculum has a conical to rounded with irregularly flexed stamens. The fruit that form later are broadly cupular to obconical in shape with a length of {{cvt|0.7|to|1.1|cm|abbr=on}} and a width of {{cvt|1.2|to|1.7|cm|abbr=on}} with a raised and convex disc and three valves at rim level. The brown seeds within are pyramidal to semi-circular in shape and {{cvt|2.5|to|3.5|mm}} long.[3] TaxonomyThe species was first formally described by the botanist George Bentham in 1867 as part of the work Orders XLVIII. Myrtaceae- LXII. Compositae. Flora Australiensis.[2] The specific epithet is taken from the Greek word pachy meaning thick and loma meaning border in reference to the thick rim of the fruit of the plant.[3] The species is part of the Eucalyptus subgenus series Diversiformae, a group of mallee trees that all have adult leaves held erect, buds with a single unscarred operculum and pyramidal seeds. The other species in series this series include; Eucalyptus erectifolia, Eucalyptus platydisca, Eucalyptus diversifolia, Eucalyptus todtiana, Eucalyptus lateritica, Eucalyptus dolorosa and Eucalyptus buprestium.[3] DistributionIt is found on sandplains and foothills growing in sandy soils in the southern Wheatbelt and Great Southern regions of Western Australia extending from around Pingelly in the north through to Albany in the south.[1] See also{{Portal|Trees}}
References1. ^1 2 3 {{FloraBase|name=Eucalyptus pachyloma|id=5735}} {{Taxonbar|from=Q15354101}}2. ^{{cite web|url=https://bie.ala.org.au/species/http://id.biodiversity.org.au/node/apni/2902381#names|title=Eucalyptus pachyloma Benth.|accessdate=11 November 2018|work=Atlas of Living Australia|publisher=Global Biodiversity Information Facility}} 3. ^1 2 3 {{cite web|url=http://keyserver.lucidcentral.org:8080/euclid/data/02050e02-0108-490e-8900-0e0601070d00/media/Html/Eucalyptus_pachyloma.htm|title=Eucalyptus pachyloma|accessdate=12 November 2018|work=Euclid|publisher=CSIRO}} 6 : Rosids of Western Australia|Trees of Australia|Eucalyptus|Myrtales of Australia|Plants described in 1867|Taxa named by George Bentham |
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