By Reto F. Dicht, Adrian D. Lüthy
This certain reference paintings offers the 1st finished taxonomy of Coryphantha, with a whole key to the genus. It incorporates a new taxonomic class 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 way of their common grooved tubercles and massive vegetation.
The booklet is the results of a long time of viewing the literature and fieldwork via the writer crew and their ongoing dedication to map out the nomenclature of this genus. in this strategy, the authors even chanced on a few new vegetation.
More than three hundred top quality color pictures 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 variety and with a bankruptcy on cultivation stipulations, the paintings won't in simple terms be a useful reference handbook for taxonomists and horticulturalists but additionally for hobbyists and plant creditors.
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Extra resources for Coryphantha: Cacti of Mexico and Southern USA
Buxbaum in KRAINZ (1956– 1960) described the serial division as follows: “…In highly derived Cereoideae the top of the axillary shoot is shifted in such a way that between the spine-bearing part and the flower- or shoot-producing part a groove develops, which extends on the upper surface along the tubercle (“Coryphantha stage”). e. from the spiniferous areole to the axil. This direction of groove development can clearly be verified in species with Escobaria areole type, but also with Macromeris and Protocoryphantha areole types (C.
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.
Anton Purpus (1860–1933), Fried- 4 History of the Genus Coryphantha rich Bödeker (1867–1937) and Friedrich Vaupel (1876–1927). In 1919–1923, an important new work appeared, which became an important basis for Coryphantha specialists until today: The Cactaceae by Nathaniel BRITTON (1858– 1934) and Joseph Nelson ROSE (1862–1928). It is the first complete monograph on cactus existing in English. Thanks to their fieldwork and the intensive use of herbaria located worldwide, the fourth volume gives much greater insight into the genus Coryphantha than Schumann’s Gesamtbeschreibung der Kakteen.