Georg Fresenius

German botanist (1808–1866).

Johann Baptist Georg Wolfgang Fresenius (25 September 1808 – 1 December 1866) was a German physician and botanist, known for his work in the field of phycology. He was a native of Frankfurt am Main. He studied medicine at the Universities of Heidelberg, Würzburg and Giessen, earning his doctorate at the latter institution in 1829. Afterwards he settled in Frankfurt am Main, where he worked as a general practitioner of medicine while maintaining an active interest in botany. As a student in Heidelberg and afterwards, he studied botany with his friend George Engelmann (1809-1884), who later beca

Abbreviations: Fresen.
Occupations: physician, mycologist, botanist
Citizenships: Free City of Frankfurt
Languages: German
Dates: 1808-09-25T00:00:00Z – 1866-12-01T00:00:00Z
Birth place: Frankfurt
Direct attributions: 54 plants, 36 fungi
Authorship mentions: 81 plants, 50 fungi

54 plants attributed, 27 plants contributed to81 plants:

Securidaca longepedunculata (Violet-tree) Fresen. 1837
medicinal plant species in the polygalaceae family
Securidaca longepedunculata (violet tree, Afrikaans: krinkhout, Bambara: satene, Tswana: mmaba, Venda: mpesu, Yoruba: ìpẹ̀ta) is a species of tree in the genus Securidaca. It is most commonly found in the tropical and subtropical areas of Africa, and it was given protected status in South Africa. The generic name is derived from Latin securis, as the shape of the wing on the nut recalls a hatchet. The specific name longepedunculata hints at the long peduncle on which the flowers are borne.
Bersama abyssinica (Winged Bersama) Fresen. 1837
plant species in the francoaceae family
Bersama abyssinica is a species of medium-sized evergreen tree in the family Francoaceae. The leaves are pinnately divided with a strongly winged rachis (hence the common name winged bersama). The inflorescence is a spike. This species is distributed across sub-Saharan Africa and includes two subspecies: B. abyssinica Fresen. subsp. abyssinica Fresen. B. abyssinica Fresen. subsp. rosea (Hoyle) Mikkelsen The subspecies rosea is endemic to Tanzania, where it is considered vulnerable. Bersama abyssinica produces a hard, heavy wood that is used in the construction of houses in West Africa.
Combretum collinum (Kalahari Variable Bushwillow) Fresen. 1837
plant species in the combretaceae family
Visit the page for more details.
Bersama (White Ashes) Fresen. 1837
plant genus in the francoaceae family
Bersama is a genus of small trees in family Francoaceae. The genus is restricted to sub-Saharan Africa, but is distributed over much of the continent.
Pavetta abyssinica Fresen. 1837
plant species in the rubiaceae family
Visit the page for more details.
Trifolium semipilosum (Kenya Clover) Fresen. 1839
perennial plant species in the fabaceae family
Trifolium semipilosum, the Kenya clover or Kenya white clover, is a species of flowering plant in the family Fabaceae. It is native to Yemen, Eritrea, Ethiopia, Kenya, Uganda, Tanzania, Malawi and Zimbabwe, and has been introduced to Saint Helena. It is a close wild relative of the important forage crop Trifolium repens (white clover).
Terminalia brownii Fresen. 1837
plant species in the combretaceae family
Visit the page for more details.
Ornithogalum abyssinicum Fresen. 1834
plant species in the asparagaceae family
Visit the page for more details.
Glaucium arabicum Fresen. 1833
perennial plant species in the papaveraceae family
Visit the page for more details.
Trifolium tembense (Tembien Clover) Fresen. 1839
annual plant species in the fabaceae family
Trifolium tembense, the Tembien clover or African clover, is a species of flowering plant in the family Fabaceae, found in Eritrea, Ethiopia, Democratic Republic of the Congo, Rwanda, Uganda, Kenya, and Tanzania. A locally important forage species, it thrives in wet areas, often growing in shallow water.
Trifolium simense (Simen Clover) Fresen. 1839
perennial plant species in the fabaceae family
Visit the page for more details.
Cyclachaena Fresen. 1836
plant genus in the asteraceae family
Cyclachaena xanthiifolia (syn. Iva xanthiifolia), known as giant sumpweed, or rag sumpweed is a North American plant species in the sunflower family, Asteraceae. It is the only species in the genus Cyclachaena. Giant sumpweed is believed to be native to the Great Plains but is now found across much of southern Canada and the contiguous United States, though rarely in the Southeast. It is an annual herb roughly 45–185 centimetres (18–72 inches) tall with stout, erect, branched stems. The stems are erect or ascending, finely ridged or grooved, and grayish-green. They are usually unbranched but
Buddleja polystachya Fresen. 1838
plant species in the scrophulariaceae family
Buddleja polystachya is a multi-branched shrub or occasionally small tree endemic to the semi-arid highlands flanking the Red Sea in Eritrea, Ethiopia, Saudi Arabia, Somalia and Yemen, where it grows in secondary scrub or around forest, often along watercourses, at elevations of between 2,200 and 3,600 m; its range extends southward into the highlands of Kenya and Tanzania. The species was named by Georg Fresenius in the early part of the 19th century.
Cordia silvestris Fresen. 1857
plant species in the cordiaceae family
Visit the page for more details.
Cordia acutifolia Fresen. 1857
plant species in the cordiaceae family
Visit the page for more details.
Andropogon abyssinicus R.Br. ex Fresen. 1837
perennial plant species in the poaceae family
Visit the page for more details.
Alchemilla abyssinica Fresen. 1837
perennial plant species in the rosaceae family
Visit the page for more details.
Veronica abyssinica Fresen. 1844
annual plant species in the plantaginaceae family
Visit the page for more details.
Trifolium rueppellianum (Rueppell's Clover) Fresen. 1839
annual and perennial plant species in the fabaceae family
Visit the page for more details.
Trifolium polystachyum Fresen. 1839
annual and perennial plant species in the fabaceae family
Visit the page for more details.
Trifolium bilineatum Fresen. 1839
annual plant species in the fabaceae family
Visit the page for more details.
Sporobolus consimilis Fresen. 1837
perennial plant species in the poaceae family
Visit the page for more details.
Polygala sphenoptera Fresen. 1837
annual plant species in the polygalaceae family
Visit the page for more details.
Lasiosiphon (Curryflowers) Fresen. 1838
plant genus in the thymelaeaceae family
Lasiosiphon is a genus of flowering plants belonging to the family Thymelaeaceae. Its native range is tropical and southern Africa, Madagascar, southwestern Arabian Peninsula, India, Sri Lanka.
Heliotropium arbainense Fresen. 1833
plant species in the heliotropiaceae family
Visit the page for more details.
Grewia tembensis Fresen. 1837
plant species in the malvaceae family
Visit the page for more details.
Epilobium stereophyllum Fresen. 1837
perennial plant species in the onagraceae family
Visit the page for more details.
Echinops macrochaetus Fresen. 1839
plant species in the asteraceae family
Visit the page for more details.
Delphinium dasycaulon Fresen. 1837
perennial plant species in the ranunculaceae family
Visit the page for more details.
Cyclachaena xanthiifolia (Marshelder) (Nutt.) Fresen. 1836
annual plant species in the asteraceae family
Visit the page for more details.
0
Your shopping cart:
Nothing in your cart yet!Add a device?
ItemCountTotal
$
Log in to load your saved addresses.
< Back to Overview
Loading shipping options...
< Back to Address
Log in to load your saved payment methods.
Pay by Credit Card
or direct bank debit
Purchase Order
Pay by wire or bank transfer
After you confirm your order, we'll email you an invoice and all bank details to complete your purchase.
< Back to Shipping
Processing... Creating order Confirming inventory Processing payment Acquiring shipping Final confirmation (Cleaning up)
Order confirmed!
Summary
Devices$ 0
Plants$ 0
ShippingNot yet calculated
TaxesNot yet calculated
Total$ 0
Address
Shipping
Payment
Start Checkout