cactoideae造句

• The ICSG classification divides the subfamily Cactoideae into nine tribes.
• Of the nine tribes recognized within Cactoideae, one, Calymmantheae, comprises a single genus, " Calymmanthium ".
• A summary of the cladograms for the Cactoideae presented in a 2011 paper is shown below ( ICSG tribes in bold ).
• For example, of the 36 genera in the subfamily Cactoideae sampled in the research, 22 ( 61 % ) were found not monophyletic.
• The " core cacti " show a steady increase in both stem succulence and photosynthesis accompanied by multiple losses of leaves, more-or-less complete in the Cactoideae.
• Nine tribes are recognized within Cactoideae in the International Cactaceae Systematics Group ( ICSG ) classification; one, Calymmantheae, comprises a single genus, " Calymmanthium ".
• ""'Hatiora " "'is a small genus of epiphytic cacti which belongs to the tribe Rhipsalideae within the subfamily Cactoideae of the Cactaceae.
• ""'Hatiora gaertneri " "'is a species of epiphytic cactus which belongs to the tribe Rhipsalideae within the subfamily Cactoideae of the Cactaceae.
• A 2011 study found that " an extraordinarily high proportion of genera " were not monophyletic, including 22 ( 61 % ) of the 36 genera in the subfamily Cactoideae sampled in the research.
• Unless otherwise indicated, the subfamily placement of the genera listed here is based on Anderson's 2001 presentation of the ICSG classification, as is the tribal placement of the genera of the subfamily Cactoideae.
• The ICSG classification of the family recognizes four subfamilies : Pereskoideae ( consisting only of the genus " Pereskia " ), Opuntioideae, Maihuenioideae ( consisting only of the genus " Maihuenia " ) and Cactoideae.
• Molecular phylogenetic studies have supported the monophyly of three of these subfamilies ( not Pereskioideae ), but have not supported all of the tribes or even genera below this level; indeed, a 2011 study found only 39 % of the genera in the subfamily Cactoideae sampled in the research were monophyletic.
• One evolutionary question at present unanswered is whether the switch to full CAM photosynthesis in stems occurred only once in the core cacti, in which case it has been lost in " Maihuenia ", or separately in Opuntioideae and Cactoideae, in which case it never evolved in " Maihuenia ".