By Reto F. Dicht, Adrian D. Lüthy
This exact reference paintings provides the 1st complete taxonomy of Coryphantha, with a whole key to the genus. It includes a new taxonomic type of all forty three species and eleven subspecies, with morphological and ecological descriptions. those cacti, which develop in Mexico and southern united states, are characterised by means of their normal grooved tubercles and big plant life.
The publication is the results of a long time of viewing the literature and fieldwork via the writer group and their ongoing dedication to map out the nomenclature of this genus. in this approach, the authors even came upon a few new vegetation.
More than three hundred high quality color photographs displaying a number of the cacti and their habitats in addition to distribution playing cards and illustrations explaining the morphological information supplement the textual content. Written in an easy-to-follow variety and with a bankruptcy on cultivation stipulations, the paintings won't basically be a useful reference handbook for taxonomists and horticulturalists but additionally for hobbyists and plant creditors.
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Additional resources for Coryphantha: Cacti of Mexico and Southern USA
This process also enforces the vaulting of the tubercle (podarium). He compares the whole areole to a short lateral shoot with a basal leaf rosette, stalk and terminal flower. , the vegetative phase, the leaf rosette is formed as a cluster with a species-typical number of spines. Thereafter, the activity of the meristem is exhausted. In floriferous areoles the formation of a “flower-stalk zone” follows with no or with very small hair-like spines, which superficially resemble a groove. At the upper end of this “stalk”, which is near the axillary end of the tubercle groove, the flower is finally produced.
C. elephantidens ssp. b. C. elephantidens ssp. c. C. elephantidens ssp. greenwoodii 18. C. b Series Pycnacanthae 19. C. pycnacantha 20. C. c Series Salinenses 21. C. kracikii 22. C. salinensis 23. C. a. C. durangensis ssp. b. C. durangensis ssp. cuencamensis 25. C. a. C. pallida ssp. b. C. pallida ssp. d Series Coryphantha 27. C. maiz-tablasensis 28. C. a. C. hintoniorum ssp. b. C. hintoniorum ssp. e Series Corniferae Subseries a. Corniferae 30. C. nickelsiae 31. C. pseudonickelsiae 32. C. compacta 33.
30). str. with Protomammillaria-areole type, might originate from a Mammillaria-like ancestor or vice versa. 2 New Interpretation of the Genus Coryphantha Previous Thesis on the Areole Development and Their Discussion The areoles of Cactaceae, sometimes referred to as “spine-bearing cushion”, correspond to a shortened lateral shoot with leaves transformed into spines and the disposition of an axillary bud (“sleeping eye”) which may produce either a flower or a shoot. The long-living meristematic region, from which flowers or shoots may develop, is reduced to the adaxial (upper) end of the areole in many Cactaceae.
Coryphantha: Cacti of Mexico and Southern USA by Reto F. Dicht, Adrian D. Lüthy