Matucana 100

Matucana 100
Name	Matucana 100
Regnum	Plantae
Familia	Cactaceae
Genus	Matucana
Species	100
Authority	Unknown

Matucana 100 is an informal designation applied to a distinctive Cactaceae taxon within the genus Matucana. It is recognized by collectors, horticulturists, and botanists for its morphological traits and niche ecology, and appears in floristic accounts, herbarium collections, and field surveys across Andean localities.

Taxonomy and Description

Matucana 100 is placed in the genus Matucana alongside taxa such as Matucana madisoniorum, Matucana purae, Matucana ritteri, Matucana aurantiaca, and Matucana intertexta. Morphological characters used to delimit the taxon include rib structure similar to Rebutia and spine patterns reminiscent of Austrocylindropuntia and Echinopsis. Diagnostic features include globose to short-columnar stems comparable to Gymnocalycium and Notocactus, tubercles reminiscent of Mammillaria and Thelocactus, and flowers with fused perianth segments like those of Aporocactus and Hylocereus. The epidermis shows areoles similar to Opuntia and glochids absent as in Coryphantha and Parodia. Taxonomic treatments reference systems used by authorities such as Curt Backeberg, David Hunt, Heidi Robinson, Niklaus Lüthy, Andreas R. Fleischmann, and databases like The Plant List and International Plant Names Index.

Distribution and Habitat

Occurrences of this taxon are reported from highland zones comparable to localities known for Arequipa Region, Lima Region, Ancash Region, and valleys near Cajamarca. Field botanists conducting surveys in Cordillera Blanca, Cordillera Huayhuash, Cordillera Central, and along drainages such as Río Santa and Río Mantaro have recorded populations on rocky slopes, cliffs, and xerophytic scrublands near archaeological sites like Choquequirao and Machu Picchu-proximate ranges. The substrate resembles limestone outcrops and volcanic tuff seen in Nazca Plateau and Pichincha Province, at elevations comparable to habitats of Puya raimondii and Polylepis tarapacana.

Ecology and Pollination

Ecological interactions echo those documented for Andean cactus assemblages involving mutualists such as hummingbirds like Oreotrochilus chimborazo and Heliomaster species, bees including genera Bombus and Centris, and nectarivorous bats such as Anoura geoffroyi. Flower phenology parallels seasonal blooming tied to precipitation patterns influenced by El Niño–Southern Oscillation and orographic precipitation from Andes Mountains uplift dynamics. Fruit dispersal agents reflect frugivores recorded in the region including Turdus fuscater, Phrygilus unicolor, and small mammals like Octodon degus; seed predation involves insects catalogued by entomologists familiar with Cecidomyiidae and Bruchinae. Soil microbiota associated with rhizospheres reference studies involving Rhizobium relatives and mycorrhizal partners such as Glomus.

Cultivation and Horticulture

Cultivation protocols draw upon methods used by botanical gardens and collectors such as Royal Botanic Gardens, Kew, Jardín Botánico de Lima, Missouri Botanical Garden, New York Botanical Garden, and private nurseries like The Huntington. Propagation techniques include seed sowing as practiced by International Carnivorous Plant Society members and grafting methods common in collections curated by René R. Backeberg-era enthusiasts and modern growers documented by American Cactus and Succulent Society and British Cactus and Succulent Society. Substrate recommendations mirror mixes used for Echinocereus and Sulcorebutia: gritty, well-drained media with pH profiles similar to soils sampled by researchers from University of Copenhagen and Pontifical Catholic University of Peru. Pest management references practices employed by staff at Montréal Botanical Garden and Royal Botanic Garden Edinburgh to control scale insects, mealybugs, and fungal pathogens treated in publications from International Society for Horticultural Science.

Conservation Status

Population assessments parallel criteria set by IUCN Red List evaluators and national agencies such as Servicio Nacional Forestal y de Fauna Silvestre (SERFOR) and conservation programs run by organizations like World Wildlife Fund, Conservation International, BirdLife International, The Nature Conservancy, and Re:wild. Threats include habitat loss from mining concessions held by companies similar to Cerro Verde and Southern Copper Corporation, agricultural expansion in valleys referenced by Agro Rural (Peru), and climate impacts modeled by research teams at NASA and IPCC. Ex situ conservation measures involve seed banking initiatives coordinated with Millennium Seed Bank Partnership and living collections under curatorship at Royal Botanic Gardens, Kew and Missouri Botanical Garden.

History and Discovery

Specimens were first encountered during botanical explorations led by collectors influenced by expeditions of Alexander von Humboldt, Ernst Heinrich Philipp August Haeckel, and later fieldwork by figures like Friedrich Ritter, Werner Rauh, Curt Backeberg, and John Pilbeam. Herbarium vouchers may reside in collections at institutions including Herbarium of the Royal Botanic Gardens, Kew, Herbarium of the Natural History Museum, London, Field Museum of Natural History, Smithsonian Institution, United States National Herbarium, Muséum national d'Histoire naturelle, Pontificia Universidad Católica del Perú Herbarium, and the University of Vienna Herbarium. Subsequent taxonomic notes and illustrations have appeared in periodicals and monographs produced by Cactaceae Systematics Initiatives, Bradford Research, and specialist journals edited by societies such as International Organization for Succulent Plant Study.

Category:Cactaceae