2022 Articles:
The Wright 3221 collection is identified as Coccothrinax moaensis with no type status. A lectotype is here proposed for the name C. moaensis at HAC. The geographic distribution is extended to the Mayarí Municipality and the phytogeographic distribution to the Nipense District, Cuba. DOI: https://doi.org/10.21414/B1MS39
The cultivar Chamaerops humilis 'Vulcano' (Arecaceae) is formally named, described, illustrated, and discussed, including its history and propagation by division of stems to ensure perpetuating its desireable characters. DOI: https://doi.org/10.21414/B1H01P
The nomenclature of Copernicia glabrescens (Arecaceae), based on Wright 3968, is updated. The geographic and biogeographic distribution is reported. Second-step lectotypification of the variety C. glabrescens var. havanensis is designated. DOI: https://doi.org/10.21414/B1C88V
Promoters of commercial date cultivation (Phoenix dactylifera) (Arecaceae) in South Texas were aware that climatic conditions were not ideal for the crop for two major reasons: unfavorable rainfall patterns during fruit ripening and occasional hard winter freezes. This adverse assessment is based upon current conditions. Twenty-first century global climate change is predicted to have an impact on South Texas, bringing about higher summer temperatures and lower precipitation amounts overall and creating dryer conditions more favorable to date palm cultivation under irrigation. However, rainfall patterns also are expected to become more erratic, and the winters harsher. In this scenario, future conditions for commercial date growing in the state will continue to be doubtful. Nevertheless, with the advent of new date palm biotechnologies and the prospects of molecular breeding they bring, it may be possible to create new genetic varieties with greater tolerance to rainfall during the critical season of ripening. DOI: https://doi.org/10.21414/B17G6X
The new cultivated hybrid Chamaedorea × microcalis (C. microspadix × C. radicalis) (Arecaceae) is named, described, illustrated, and discussed. Its two cultivars, ‘Alan Bredeson’ and ‘Claire’, are discussed and illustrated. DOI: https://doi.org/10.21414/B13S3N
The handsome ornamental Anthurium seleri (Araceae) is discussed and illustrated, including its history, nomenclature and typification, a description, distribution and habitat, and cultivation. We also include and briefly discuss an update to the nomenclature and typification of A. andresloviense. DOI: https://doi.org/10.21414/B10011
A recent reassessment of Dypis (Arecaceae) showed the necessity of transferring many species to Chrysalidocarpus. Here I formally transfer Dypsis burtscherorum to Chrysalidocarpus, making the new combination Chrysalidocarpus burtscherorum. DOI: https://doi.org/10.21414/B1V886
A literature review and examination of herbarium specimens document the chronology of the discovery, taxonomy, nomenclature, and typification of Colpothrinax wrightii (Arecaceae), which is based on Wright 3964. Its distribution, uses, conservation, common names, and excluded names are also provided. DOI: https://doi.org/10.21414/B1QG68
We evaluated six cultivars of Hibiscus rosa-sinensis for susceptibility to infestation of giant whitefly, one of the most common, annoying, and damaging pests of this beloved shrub in southern California. Giant whitefly mean infestation levels ranged from a low of 1.1 for ‘Butterball’ to a high of 4.5 for ‘Lipstick’. The red cultivar ‘Brilliant’ and pink cultivars ‘Kona’ and ‘Lipstick’ had higher mean infestation levels (3.4, 4.1, 4.5, respectively) than the yellow cultivars ‘Butterball’ and ‘Butterfly’ (1.1 and 2.7, respectively) while the lone white cultivar ‘White Wings’ (3.2) was somewhat intermediate. Although foliar trichome density varied among the six cultivars, we were unable to find a significant difference between mean trichome density and infestation level. As a composite of all cultivars, pruned plants had significantly lower mean giant whitefly infestation levels than unpruned plants (2.5 vs. 4.1, respectively, p<0.01). DOI: https://doi.org/10.21414/B1KS30
Copernicia × molinetii (Arecaceae) has characters intermediate between two other species, C. gigas and C. hospita, strongly demonstrating that it is a hybrid; I report this new status here. The remaining eight natural hybrids of Copernicia in Cuba are briefly reviewed and summarized. DOI: https://doi.org/10.21414/B1G01C