We’ve recently obtained a series of Scientific German Educational Charts that were originally illustrated in the 1950s and 60s. They continue to be produced by the same printing company. This manufacturer has been internationally recognized for producing scientifically accurate educational charts since 1929.
These charts have been reissued using the original film and same methods as the first printing. They are printed without inscription for university study and aesthetic purposes with special attention paid to anatomical detail and accuracy.
They are mounted on canvas and fitted with stable wooden rods. They measure 44.5 inches tall by 32.25 inches wide (85 cm x 120 cm). Each chart comes with a nylon cord that passes through the top wooden rod for easy hanging.
They come rolled and are shipped in a sturdy mailing tube. Included with each poster is a key with accompanying text in English, German, French, and Spanish.
Dandelion Key- Taraxacum officinale
Fig. 1 A complete plant: Eight inflorescences and fructifications on long, leafless stalks, showing the various stages of development. One head as new bud, others with the yellow, tongue-shaped individual flowers. The last stage is represented by an almost empty fructification: the dimples, in which the achenes were seated, are visible. The synoptic picture shows tap root with adventitious roots and the short rhizome just underneath the rosette. Fig. 2 - Longitudinal section of composite flower. The marginal or ray-flowers are female the mature bifurcated stigma is rolled back . Inside the young, not yet open central or disc-flowers and between them some floral leaves in pre-male phase with pollen above staminate tube. Fig. 3 Transverse cut through peduncle with peripheral ring of vascular bundles. Fig. 4 Tongue-shaped single flower with the five petals, forming the tongue. The bifurcated stigma rises above the tube of stamens. The calyx if formed by a corolla of hairs, the filament being still very short. Fig. 5 Enlarged portion of lingual flower, corresponding fig. 4th. The tube of stamens is cut open the single filaments of the stamens and the pistil with the forked stigma are to be seen. Fig. 6a To the right and left side of the plant two single fruits (achenes). Fig. 6b Filament of the tufted fruit has grown much larger. Fig. 7 Rhizome and pieces of roots produce new plants. Fig. 8 Transverse section of root. Inside the central cylinder or stele, it is surrounded by a spongy area, the cortex, with the regions of specialized cells. Fig. 9 Section of a vascular ring of the cortex, showing sieve-tubes with companion cells, conductors of the milky sap, and sieve-parenchyma.
