Aliso Pub Date : 2012-01-01 DOI: 10.5642/ALISO.20123001.03

R. Schmid

{"title":"John Theodore Buchholz (1888-1951) Studying Conifers in California, Especially Sequoiadendron and Sequoia (Cupressaceae) in 1936","authors":"R. Schmid","doi":"10.5642/ALISO.20123001.03","DOIUrl":"https://doi.org/10.5642/ALISO.20123001.03","url":null,"abstract":"Biographical details are given for John Theodore Buchholz (1888–1951), including his interest in conifers of California and New Caledonia. Buchholz made detailed studies of the vegetative morphology, reproductive morphology, and embryology of Sequoiadendron giganteum and Sequoia sempervirens prior to his 1939 segregation of Sequoiadendron from Sequoia. Buchholz, a professor at the University of Illinois (1929–1951), spent spring and summer of his 1936 sabbatical in California. Description of Buchholz’s technique for morphological collections provides valuable information about his itineraries and his herbarium collections of S. giganteum in 1936. Buchholz also spent the summers of 1940, 1942, and 1944 in California collecting Sequoiadendron (1940) and cultivated material of Podocarpus (1942), as well as investigating Pinus (1942, 1944). Information sources included: obituaries and other biographical accounts of Buchholz and his students, labels of his herbarium collections, 55 letters archived at the California Academy of Sciences and the University of Illinois, and Buchholz’s extensive bibliography on gymnosperms (57 titles, including those of his student Netta Elizabeth Gray, 1913–1970). Publications with available PDFs allowed systematic searching of relevant dates and text strings.","PeriodicalId":80410,"journal":{"name":"Aliso","volume":"30 1","pages":"5-17"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70796122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Sinker Structure of Phoradendron californicum (Viscaceae) Confounds its Presumed Close Relationship to Other Acataphyllous Species 加利福尼亚花椰菜(花椰菜科)的下沉结构混淆了它与其他仙人掌属植物的近亲关系

Aliso Pub Date : 2011-01-01 DOI: 10.5642/ALISO.20112901.03

R. Schmid, C. Calvin, Carol A. Wilson

{"title":"Sinker Structure of Phoradendron californicum (Viscaceae) Confounds its Presumed Close Relationship to Other Acataphyllous Species","authors":"R. Schmid, C. Calvin, Carol A. Wilson","doi":"10.5642/ALISO.20112901.03","DOIUrl":"https://doi.org/10.5642/ALISO.20112901.03","url":null,"abstract":"Phoradendron is the largest genus of New World mistletoes, with about 250 species in two subgenera, Boreales and Aequatoriales, corresponding, respectively, to northern acataphyllous and southern cataphyllous groups. The typically acataphyllous P. californicum of western North America is controversial because recent phylogenetic work has nested it in the southern cataphyllous clade. Seedling establishment, stem anatomy, and endophytic system structure of this species were studied. Seedling haustorial holdfasts have gland cavities, structures considered absent in the Viscaceae clade of Santalales. The stem epidermis has a thick cuticle, deeply sunken stomata, and branched multicellular trichomes. The stem has an outer cortex of palisade chlorenchyma and an inner cortex of large isodiametric parenchyma cells. The boundary area between the outer and inner cortex contains druses and an unusual ring of small xylic bundles lacking protoxylem fibers and phloem. Sinkers are of two types: uniseriate, with only parenchyma that often has thick-walled transfer cells at its interface with vessels of the host; and multiseriate, with parenchyma and vessel elements that often are in direct contact and share simple perforation plates with vessels of the host. Sinker morphology is also dimorphic in the cataphyllous P. fragile but only unimorphic (multiseriate) in the acataphyllous P. juniperinum and P. serotinum. The dimorphic sinker system of P. californicum may be functionally partitioned, whereas these functions are combined in the unimorphic sinkers of other acataphyllous species. Differences in sinker morphology may reflect evolutionary trends in Phoradendron. This study also supports the hypothesis that P. californicum is more closely aligned with the mainly tropical cataphyllous species of the genus.","PeriodicalId":80410,"journal":{"name":"Aliso","volume":"29 1","pages":"13-23"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70796227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Phylogenetic evaluation of series delimitations in section Palmata (Acer, Aceroideae, Sapindaceae) based on sequences of nuclear and chloroplast genes. 基于核和叶绿体基因序列的棕榈科(槭树科，槭树科，皂荚科)序列划分的系统发育评价。

Aliso Pub Date : 2011-01-01 DOI: 10.5642/ALISO.20112901.05

Jianhua Li

引用次数: 9

Wood Anatomy of Family Salvadoraceae from the Indian Subcontinent with Special Reference to the Ultrastructure of the Vessel Wall 印度次大陆萨尔瓦多科木材解剖与血管壁超微结构的特殊关系

Aliso Pub Date : 2011-01-01 DOI: 10.5642/aliso.20112901.08

V. Saxena, Sangeeta Gupta

引用次数: 1

Plants of the Colonet Region, Baja California, Mexico, and a Vegetation Map of Colonet Mesa 墨西哥下加利福尼亚科罗内特地区的植物和科罗内特台地的植被图

Aliso Pub Date : 2011-01-01 DOI: 10.5642/ALISO.20112901.04

A. Harper, S. Vanderplank, Mark W. Dodero, S. Mata, J. Ochoa

{"title":"Plants of the Colonet Region, Baja California, Mexico, and a Vegetation Map of Colonet Mesa","authors":"A. Harper, S. Vanderplank, Mark W. Dodero, S. Mata, J. Ochoa","doi":"10.5642/ALISO.20112901.04","DOIUrl":"https://doi.org/10.5642/ALISO.20112901.04","url":null,"abstract":"The Colonet region is located at the southern end of the California Floristic Province, in an area known to have the highest plant diversity in Baja California. A preliminary list of vouchered specimens is developed for the area, and a vegetation map for Colonet Mesa is presented. The Colonet region has at least 435 vascular plant taxa, of which 383 are native to Baja California, and 52 are endemic or nearly endemic. This list includes five local endemic taxa known only from the Colonet region, 18 taxa on the California Native Plant Society List IB of taxa that are \"rare, threatened, or endangered in California and elsewhere,\" and three on the Mexican NOM 059 list of protected taxa. The Mexican federal government has proposed to build a major port and a new city at Colonet. To understand the potential impact of the port on the regional biodiversity, we examine three areas ---a Footprint area which will presumably be highly affected by the port, the Mesa area which contains all the known vernal pools, and a Buffer area surrounding the other two areas. The large Buffer shows the greatest number of native and endemic taxa, followed by the Mesa. The Footprint has two species of high conservation concern that are not represented elsewhere in the study area. The vegetation map of Colonet Mesa confirms the presence of large vernal pools and shows extensive maritime chaparral, neither of which has been reported from elsewhere in northwest Baja California. This report documents the high plant biodiversity of the region and highlights the rare and unique species and vegetation types of Colonet Mesa.","PeriodicalId":80410,"journal":{"name":"Aliso","volume":"29 1","pages":"25-42"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70795857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Nomenclatural Changes for Some Grasses in California. II. 加利福尼亚一些草的命名变化。2

Aliso Pub Date : 2011-01-01 DOI: 10.5642/ALISO.20112901.06

James P. Smith, J. Columbus

引用次数: 1

The Flora of Greater San Quintín, Baja California, Mexico (2005–2010) 大圣植物Quintín，下加利福尼亚，墨西哥(2005-2010)

Aliso Pub Date : 2011-01-01 DOI: 10.5642/ALISO.20112902.02

S. Vanderplank

{"title":"The Flora of Greater San Quintín, Baja California, Mexico (2005–2010)","authors":"S. Vanderplank","doi":"10.5642/ALISO.20112902.02","DOIUrl":"https://doi.org/10.5642/ALISO.20112902.02","url":null,"abstract":"The plants of San Quintı́n (Baja California, Mexico) were documented through intensive fieldwork and collection of herbarium specimens to create a checklist of species. The region is located near the southernmost extent of the California Floristic Province, and the flora is influenced by the adjacent desert to the south. A total of 435 plant taxa were documented, of which 82% are native plants. Almost one in three native plant taxa in Greater San Quintı́n is a sensitive species, here documented as rare and/or locally endemic, and many taxa have yet to be evaluated fully for rarity and threats. Four major habitats were identified, and a checklist is presented for each. Shell middens and vernal pools represent micro-habitats with unique species that also warrant conservation consideration. All habitats in Greater San Quintı́n are threatened by human activity, and agricultural water use practices are unsustainable. There is a pressing need for conservation of the natural areas that remain in this unique but heavily impacted region. The El Socorro Dunes and the volcanic bay are of particular conservation value with several narrowly endemic taxa. As a transitional area in a global biodiversity hotspot, Greater San Quintı́n is home to many species on the edge of their ranges and may be of critical importance to biodiversity conservation in a changing climate.","PeriodicalId":80410,"journal":{"name":"Aliso","volume":"29 1","pages":"65-103"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70796033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

A New Variety of Lomatium ravenii (Apiaceae) from the Northern Great Basin and Adjacent Owyhee Region 标题大盆地北部及邻近奥威希地区的凤头莲属一新变种

Aliso Pub Date : 2011-01-01 DOI: 10.5642/ALISO.20112902.03

K. Carlson, D. Mansfield, James F. Smith

引用次数: 2

Distribution and regional ecology of Californian palm oases interpreted from Google Earth images. 加州棕榈绿洲的分布与区域生态——来自谷歌地球图像的解释。

Aliso Pub Date : 2011-01-01 DOI: 10.5642/ALISO.20112901.02

R. Minnich, E. Franco-Vizcaíno, Mario Salazar-Ceseña

{"title":"Distribution and regional ecology of Californian palm oases interpreted from Google Earth images.","authors":"R. Minnich, E. Franco-Vizcaíno, Mario Salazar-Ceseña","doi":"10.5642/ALISO.20112901.02","DOIUrl":"https://doi.org/10.5642/ALISO.20112901.02","url":null,"abstract":"The native fan palms of the Baja California peninsula (Mexico) and neighboring southern California (USA) comprise two species each in Washingtonia and Brahea. While these are among the most familiar ornamental palms in the world, many features of their taxonomy, distribution, and environmental relationships remain unresolved. We utilized Google Earth Digital Globe imagery (and limited surveys by air and land) to develop the first map detailing the geographic distribution of palm populations in the Peninsular Range Province (PRP) and used these data to formulate new hypotheses on their biotic and abiotic relationships. We inventoried 15,216 populations covering an area of 8533 ha, containing an estimated 1.31 million trees. Tree populations estimated by manual tallies from Google Earth images closely matched direct counts published by previous workers. We documented significant extensions in the distributions of both Washingtonia species, as well as 66 hitherto unreported W. robusta oases in the Sierra La Asamblea. We also recorded thousands of upland populations of dwarf B. armata. Google Earth imagery shows that native fan palms are widespread in remote mountains of the entire peninsula, but in Baja California Sur W. robusta is mostly restricted to a few highly altered agricultural landscapes associated with extensive wetlands. It has long been assumed that the center of W. robusta distribution is in the tropical southern peninsula. Our observations suggest it may have been dispersed there by indigenous peoples before European contact, and its center of genetic diversity may instead lie in the Central Desert (ca. lat 28u–30uN).","PeriodicalId":80410,"journal":{"name":"Aliso","volume":"29 1","pages":"1-12"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70796216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Rediscovery of Monotropastrum sciaphilum (Andres) G.D.Wallace in China after 91 Years 91年后在中国重新发现的坐骨单驼(monotropastum sciaphilum)

Aliso Pub Date : 2011-01-01 DOI: 10.5642/ALISO.20112902.04

Mindong Shen, Chang-Qin Zhang, G. Wallace

引用次数: 3

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