Coryphantha: Cacti of Mexico and Southern USA
Reto F. Dicht, Adrian D. Lüthy
This distinctive reference paintings provides the 1st finished taxonomy of Coryphantha, with an entire key to the genus. It includes 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 by means of their commonplace grooved tubercles and big plants.
The booklet is the results of a long time of viewing the literature and fieldwork via the writer staff and their ongoing dedication to map out the nomenclature of this genus. in this strategy, the authors even stumbled on a few new vegetation.
More than three hundred fine quality color images displaying many 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 type and with a bankruptcy on cultivation stipulations, the paintings won't simply be a useful reference handbook for taxonomists and horticulturalists but additionally for hobbyists and plant creditors.
ICBN artwork 22.4. Aulacothelae, spelled Aulacothele was once raised to the rank of a genus via Baron DE MONVILLE in 1846. The ebook of the widely used identify Aulacothele (Lemaire) Monville (1846) has to be considered as legitimate and, in truth, has precedence over Coryphantha (Engelmann) Lemaire (1868), in response to Mammillaria subgenus Coryphantha Engelmann (1856). R. MOTTRAM (1992) proposed the conservation of Coryphantha rather than Aulacothele, as the ordinary identify Aulacothele, even if legitimate, hasn't ever.
The yr is dry. the vast majority of Coryphantha spp. develop in areas with lower than six hundred mm/year precipitation, i.e. dry and intensely dry zones, however the marginal components of distribution can be found in reasonably humid areas. summer season within the complete distribution quarter is particularly scorching, yet within the wintertime brief chilly classes and nightly frosts usually are not strange, in general within the north. The weather conditions are proven in Plate five. Coryphantha spp. are rather well tailored to those stipulations of weather. In iciness they.
Diameter, woolly in early life. Radial spines 9–16, such a lot of them radiating, occasionally a few bundled over physique apex, horizontal, wonderful, needle-like, directly, decrease and lateral ones 7–10 mm lengthy, top ones as much as double this size and slightly thinner, all boring white, roughly darkish tipped, higher ones approximately black, then all turning gray. important backbone (0)-1, directed upwards, somewhat sticking out (or hardly ever unmarried spines as much as approximately right-angled to the radials spines), instantly, needle-like, stiff,.
Plates forty four and forty five, photograph 1. style: Mexico, Durango, east of Cuencamé, path forty nine, approximately 15 km from the junction with path forty six, 1800 m, 26.3. 1979, Bremer Nr.379–4 (ASU). physique sprouting on the base, group-forming, egg-shaped-globose to cylindrical, as much as 10 cm diameter and as much as sixteen cm excessive, uninteresting greyish-green, apex flat or a little vaulted, strongly white-woolly. Tubercles in thirteen and 21, extra not often in eight and thirteen sequence, rhomboid, conical in the direction of the apex, on the base 12–15 mm vast, size of higher.
21:106–107 Poselger, Hermann (1853): Echinocactus saltillensis mihi. Allg. Gartenz. 21:101 Preston-Mafham, Rod and Preston-Mafham, Ken (1991): Cacti – The illustrated dictionary. Blandford, London Purpus, J.A. (1911): Standorte und Standortverhältnisse einiger Kakteen. Monatsschr. Kakt. 21:82–86 Purpus, J.A. (1911): Mammillaria valida. Monatsschr. Kakt. 21:97–102 Purpus, J.A. (1927): Coryphantha borwigii. Gartenflora 338 References Quehl, L. (1908): Mamillaria Delaetiana Quehl n. sp.