Coryphantha: Cacti of Mexico and Southern USA by Dr. med. Reto F. Dicht, Adrian D. Lüthy (auth.) PDF

By Dr. med. Reto F. Dicht, Adrian D. Lüthy (auth.)

This precise reference paintings provides the 1st entire taxonomy of Coryphantha, with an entire key to the genus. It encompasses a new taxonomic category 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 via their ordinary grooved tubercles and massive plants.
The publication is the results of a long time of viewing the literature and fieldwork by means of the writer crew and their ongoing dedication to map out the nomenclature of this genus. in this approach, the authors even found a few new vegetation.
More than three hundred high quality color photographs displaying some of the cacti and their habitats in addition to distribution playing cards and illustrations explaining the morphological info supplement the textual content. Written in an easy-to-follow kind and with a bankruptcy on cultivation stipulations, the paintings won't simply be a useful reference guide for taxonomists and horticulturalists but additionally for hobbyists and plant collectors.

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One problem was that Lemaire’s and Engelmann’s lists of species differed markedly. There were, in fact, few species in common. After typification had been deemed necessary for taxa of any rank, several authors set out to provide a type species for Coryphantha. , edn. 2, pp. 1–3, Scribner, New York. They proposed Mammillaria sulcata Engelmann. This fact had been overlooked by many authors, but was referred to by R. MOTTRAM in 1992. Generally, the lectotypification by BRITTON and MILLSPAUGH (1920) had been regarded as valid.

The thesis, which Friedrich postulated as a consequence of his analysis of the Protomammillaria areole type (Coryphantha clavata), can be applied to all areole types within the Mammillaria phylad (mainly the two genera Coryphantha and Mammillaria), but it needs to be extended, since it originates from observations of Coryphantha clavata only. The separation of peripheral spination from protected flowers positioned inside makes sense ecologically and the transfer of the flowers from the areole to the axils can be understood phylogenetically.

E Series Corniferae Subseries a. Corniferae 30. C. nickelsiae 31. C. pseudonickelsiae 32. C. compacta 33. C. a. C. recurvata ssp. b. C. recurvata ssp. canatlanensis 35. C. 2 Tubercles at the base less than 7 mm wide, seeds globose 36. C. a. C. pseudoechinus ssp. b C. pseudoechinus ssp. laui Subseries b. Delaetianae 38. C. delaetiana 39 a. C. ramillosa ssp. ramillosa 39 b. C. ramillosa ssp. santarosa 40. C. pulleineana 41. C. werdermannii 42. C. B Section Gracilicoryphantha 43. C. cons. ICBN 5411 a) (=) Aulacothele (Lemaire) Monville, Cat.

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