Eucalyptus globulus (leaf)

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=Botanical Voucher Specimen=
 
=Botanical Voucher Specimen=
 
=Organoleptic Characteristics=
 
=Organoleptic Characteristics=
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{| border=1
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{{Macroscopy | source=United States Dispensatory (1918)
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| description=[The leaves] odor
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slightly aromatic; taste aromatic, bitter, and cooling.}}
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|}
 
=Macroscopic Characteristics=
 
=Macroscopic Characteristics=
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{| border=1
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{{Macroscopy | source=United States Dispensatory (1918)
 
{{Macroscopy | source=United States Dispensatory (1918)
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| description=The genus ''Eucalyptus'' was named in allusion to the operculum or  
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| description=The genus ''Eucalyptus'' was named in allusion to the operculum or lid which covers the calyx until the stamens are fully formed.
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lid which covers the calyx until the stamens are fully formed.
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The plants are evergreen and vary from
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The plants are evergreen and vary from shrubs to trees of enormous height, some of them probably being the highest trees known. Kerner gives the height as 140 to 152 meters.  
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shrubs to trees of enormous height, some of them probably being the
+
−
highest trees known. Kerner gives the height as 140 to 152 meters.  
+
  
−
The leaves frequently vary in shape and in position on both
+
The leaves frequently vary in shape and in position on both young and mature trees; they are fixed vertically, and not horizontally
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young and mature trees; they are fixed vertically, and not horizontally
+
 
as the leaves of our trees, the petiole being twisted. The leaves
 
as the leaves of our trees, the petiole being twisted. The leaves
 
furthermore contain large oil-secreting reservoirs. The flowers are
 
furthermore contain large oil-secreting reservoirs. The flowers are
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glaucous, glabrous, glandular-punctate and with numerous small,
 
glaucous, glabrous, glandular-punctate and with numerous small,
 
circular, brown dots of cork; veins of the first order anastomosing with
 
circular, brown dots of cork; veins of the first order anastomosing with
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each other and forming a line nearly parallel with the margin; odor
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each other and forming a line nearly parallel with the margin.
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slightly aromatic; taste aromatic, bitter, and cooling.
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}}
 
}}
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+
|}
 
=Microscopic Characteristics=
 
=Microscopic Characteristics=
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{| border=1
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|
 
{{Macroscopy | source=United States Dispensatory (1918)
 
{{Macroscopy | source=United States Dispensatory (1918)
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| description=Under the
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| description=Under the microscope sections of Eucalyptus show the upper and lower surfaces with nearly similar cells, the outer walls being strongly cuticularized; stomata occur on both surfaces, a region of palisade cells made up of from 3 to 4 rows of cells occurring beneath each surface; among the palisade cells occur large oil-secretion reservoirs, with a yellowish or orange colored oily content; calcium oxalate crystals in cells of the loose mesophyll in the form of rosette aggregates or monoclinic prisms varying from 0.015 to 0.025 mm. in diameter. At the periphery of the fibro-vascular bundles of the midrib and petiole occurs a more or less interrupted circle of small groups of slightly lignified bast-fibers.
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microscope  
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sections of Eucalyptus show the upper and lower surfaces
+
−
with nearly similar cells, the outer walls being strongly cuticularized;
+
−
stomata occur on both surfaces, a region of palisade cells made up of
+
−
from 3 to 4 rows of cells occurring beneath each surface; among the
+
−
palisade cells occur large oil-secretion reservoirs, with a yellowish or
+
−
orange colored oily content; calcium oxalate crystals in cells of the loose
+
−
mesophyll in the form of rosette aggregates or monoclinic prisms
+
−
varying from 0.015 to 0.025 mm. in diameter. At the periphery of the
+
−
fibro-vascular bundles of the midrib and petiole occurs a more or less
+
−
interrupted circle of small groups of slightly lignified bast-fibers.
+
 
}}
 
}}
  
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{{Microscopy | source=Elan M. Sudberg, Alkemist Laboratories
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{{Media2 |cat=Microscopy | source=Elan M. Sudberg, Alkemist Laboratories
 
             | companyimage= AP-LOGO-Laboratories Crop - Copy.jpg
 
             | companyimage= AP-LOGO-Laboratories Crop - Copy.jpg
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             | companyURL=http://www.Alkemist.com
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             | companyURL=http://www.alkemist.com
 
             | mainimage= Eucalyptus_globulus_-_Alkemist_Laboratories.png
 
             | mainimage= Eucalyptus_globulus_-_Alkemist_Laboratories.png
 
             | caption1=Numerous anomocytic stomata of more than 80 μm in diameter observed at 400x with Acidified Chloral Hydrate Glycerol Solution.
 
             | caption1=Numerous anomocytic stomata of more than 80 μm in diameter observed at 400x with Acidified Chloral Hydrate Glycerol Solution.
 
             | description= Eucalyptus (leaf) (''Eucalyptus globulus'')
 
             | description= Eucalyptus (leaf) (''Eucalyptus globulus'')
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| source2=Elan M. Sudberg, Alkemist Laboratories
 +
            | companyimage2= AP-LOGO-Laboratories Crop - Copy.jpg
 +
            | companyURL2=http://www.alkemist.com
 
             | image2= Eucalyptus_globulus-1-_Alkemist_Laboratories.png
 
             | image2= Eucalyptus_globulus-1-_Alkemist_Laboratories.png
 
             | caption2= Large oil gland seen in cross section view observed at 400x with Acidified Chloral Hydrate Glycerol Solution.
 
             | caption2= Large oil gland seen in cross section view observed at 400x with Acidified Chloral Hydrate Glycerol Solution.
 
             | reference= European Pharmacopoeia 5.0 2005
 
             | reference= European Pharmacopoeia 5.0 2005
 
             | }}
 
             | }}
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+
|}
 
=High Performance Thin Layer Chromatographic Identification=
 
=High Performance Thin Layer Chromatographic Identification=
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=Supplementary Information=
 
=Supplementary Information=
 
=Sources=
 
=Sources=
 
<references />
 
<references />

Revision as of 20:41, 17 March 2014


Contents

Nomenclature

Eucalyptus globulus Labill.   Myrtaceae  
Standardized common name (English): eucalyptus

Botanical Voucher Specimen

Organoleptic Characteristics

[The leaves] odor

slightly aromatic; taste aromatic, bitter, and cooling.

Source: United States Dispensatory (1918) [1]

Macroscopic Characteristics

The genus Eucalyptus was named in allusion to the operculum or lid which covers the calyx until the stamens are fully formed.

The plants are evergreen and vary from shrubs to trees of enormous height, some of them probably being the highest trees known. Kerner gives the height as 140 to 152 meters.

The leaves frequently vary in shape and in position on both young and mature trees; they are fixed vertically, and not horizontally as the leaves of our trees, the petiole being twisted. The leaves furthermore contain large oil-secreting reservoirs. The flowers are arranged in cymes or axillary umbels and are devoid of petals; the usually whitish stamens are inflexed in the bud and expand when the operculum is removed, giving the name as already stated to the genus. The fruit is a 3- to 6-celled truncated capsule, or pyxis. The seeds are small and very numerous, the sterile ones predominating.

Eucalyptus globulus is one of the largest known trees, attaining sometimes a height of 300 or even 350 feet, with a smooth, ash-colored bark. The leaves attain a foot in length, and vary, according to age, from a glaucous white to a bluish-green color. The flowers are large, pinkish-white, axillary, occurring singly, or in clusters. Although its wood is very resinous, hard, and durable, the tree is remarkable for the rapidity of its growth, reaching, under favorable circumstances, fifty feet of height in five or six years.

The leaves are described as follows:

Laminas lanceolately scythe-shaped, from 8 to 30 cm. in length and from 2 to 7.5 cm. in breadth; summits when present acute or acuminate; bases unequal, obtuse or more or less rounded and connected with a twisted petiole from 5 to 35 mm. in length; margins slightly uneven, revolute; coriaceous; both surfaces varying from pale yellowish-green to grayish-green and more or less glaucous, glabrous, glandular-punctate and with numerous small, circular, brown dots of cork; veins of the first order anastomosing with each other and forming a line nearly parallel with the margin.

Source: United States Dispensatory (1918) [2]

Microscopic Characteristics

Under the microscope sections of Eucalyptus show the upper and lower surfaces with nearly similar cells, the outer walls being strongly cuticularized; stomata occur on both surfaces, a region of palisade cells made up of from 3 to 4 rows of cells occurring beneath each surface; among the palisade cells occur large oil-secretion reservoirs, with a yellowish or orange colored oily content; calcium oxalate crystals in cells of the loose mesophyll in the form of rosette aggregates or monoclinic prisms varying from 0.015 to 0.025 mm. in diameter. At the periphery of the fibro-vascular bundles of the midrib and petiole occurs a more or less interrupted circle of small groups of slightly lignified bast-fibers.

Source: United States Dispensatory (1918) [3]
bottomright bottomright

Eucalyptus globulus - Alkemist Laboratories.png
Numerous anomocytic stomata of more than 80 μm in diameter observed at 400x with Acidified Chloral Hydrate Glycerol Solution.
Source: Elan M. Sudberg, Alkemist Laboratories[4]

Eucalyptus globulus-1- Alkemist Laboratories.png
Large oil gland seen in cross section view observed at 400x with Acidified Chloral Hydrate Glycerol Solution.
Source: Elan M. Sudberg, Alkemist Laboratories[5]

High Performance Thin Layer Chromatographic Identification

Supplementary Information

Sources

  1. ↑ United States Dispensatory (1918)
  2. ↑ United States Dispensatory (1918)
  3. ↑ United States Dispensatory (1918)
  4. ↑ Elan M. Sudberg, Alkemist Laboratories http://www.alkemist.com
  5. ↑ Elan M. Sudberg, Alkemist Laboratories http://www.alkemist.com
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