{"id":5695,"date":"2012-03-10T10:58:53","date_gmt":"2012-03-10T15:58:53","guid":{"rendered":"http:\/\/opuntiads.com?page_id=5695"},"modified":"2019-03-25T14:31:37","modified_gmt":"2019-03-25T18:31:37","slug":"cylindropuntia-multigenticulata","status":"publish","type":"page","link":"https:\/\/www.opuntiads.com\/cyl\/cylindropuntia-multigenticulata\/","title":{"rendered":"Cylindropuntia multigeniculata"},"content":{"rendered":"

Clokey. Madro\u00f1o (Journal of the California Botanical Society) 7: 69 1943.<\/strong><\/h2>\n

Herbarium specimen<\/a>; Herbarium specimen<\/a>; Herbarium specimen<\/a>; Herbarium specimen<\/a>; Herbarium specimen<\/a><\/p>\n

Original description<\/a><\/span><\/h3>\n

Treatment by Baker, 2005<\/a><\/span><\/h3>\n

What is Cylindropuntia multigeniculata?<\/em><\/span><\/h3>\n

Cylindropuntia multigeniculata<\/em> is a rare cholla occurring in the northeastern Mojave desert in southern Nevada and northwestern Arizona. It occurs sporadically in rocky limestone, basalt, granite, and rhyolite substrates between 1035 to 1400 m elevation.<\/p>\n

Details<\/h4>\n

G. multigeniculata<\/em> is a sprawling to erect dense and compact shrub usually growing to approximately 0.5 m tall. The stems are fairly firmly attached and range from 3 to 5 cm long by 1 to 2 cm wide. Each areole has 4 to 24 thin white spines, which almost or entirely obscure the stem. The sheaths are also thin and white or silver, though they are sometimes pink-tinged in the northernmost populations. The flowers are greenish-yellow with cream to pale yellow filaments, styles, and stigmas. The fruits are leathery, yellow, and range from almost completely spineless in some populations to consistently spiny in others. Fruit spininess appears to follow a geographical cline, with populations in the northwestern end of the species range having essentially spineless fruits and those in the southeast end of its range having the spiniest fruits. G. multigeniculata<\/em> is diploid (2n = 22).<\/p>\n

Putative hybrids of G. multigeniculata<\/em> and G. acanthocarpa <\/em>var. acanthocarpa<\/em> at the type locality of G. multigeniculata<\/em> (Blue Diamond, Nevada) bear a strong resemblance to G. echinocarpa, <\/em>suggesting a possible hybrid origin of the widespread and morphologically variable G. echinocarpa.<\/em> However, recent data demonstrates that G. multigeniculata is not of hybrid origin<\/a>. G. multigeniculata<\/em> also hybridizes with G. whipplei<\/em> var. whipplei<\/em> in the Sheep Range of southern Nevada.<\/p>\n

The taxonomy of G. multigeniculata<\/em> has been confused over the years. Clokey correctly considered it a distinct species when he designated it as Opuntia multigeniculata<\/em> in 1943. In 1982, Benson incorrectly placed it as a variety of Opuntia (Cylindropuntia) whipplei<\/em>. Because spiny-fruited populations at the southeast end of its range were placed under G. echinocarpa<\/em>, and because of some morphological intermediacy between G. echinocarpa <\/em>and G. whipplei,<\/em> Pinkava considered G. multigeniculata<\/em> to be a hybrid between these two species. However, a great deal of morphological measurements and statistical analyses quite clearly show that G. multigeniculata<\/em> is distinct from both G. echinocarpa <\/em>and G. whipplei<\/em>. The State of Nevada Department of Conservation & Natural Resources commissioned a report<\/a> on G. multigeniculata<\/em> in 2005. <\/p>\nngg_shortcode_0_placeholder\n","protected":false},"excerpt":{"rendered":"

Clokey. Madro\u00f1o (Journal of the California Botanical Society) 7: 69 1943. Herbarium specimen; Herbarium specimen; Herbarium specimen; Herbarium specimen; Herbarium specimen Original description Treatment by Baker, 2005 What is Cylindropuntia multigeniculata? Cylindropuntia multigeniculata is a rare cholla occurring in the northeastern Mojave desert in southern Nevada and northwestern Arizona. It occurs sporadically in rocky limestone, … Continue reading “Cylindropuntia multigeniculata”<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":9,"comment_status":"open","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-5695","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.opuntiads.com\/cyl\/wp-json\/wp\/v2\/pages\/5695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.opuntiads.com\/cyl\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.opuntiads.com\/cyl\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.opuntiads.com\/cyl\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.opuntiads.com\/cyl\/wp-json\/wp\/v2\/comments?post=5695"}],"version-history":[{"count":0,"href":"https:\/\/www.opuntiads.com\/cyl\/wp-json\/wp\/v2\/pages\/5695\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.opuntiads.com\/cyl\/wp-json\/wp\/v2\/media?parent=5695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}