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- Wood anatomy (4)
- Bignoniaceae (2)
- Dispersal (2)
- Ecological wood anatomy (2)
- Leaf anatomy (2)
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- Seed dispersal (2)
- Taxonomy (2)
- Tracheids (2)
- Vasicentric tracheids (2)
- 3-desoxyanthocyanins (1)
- Acylated anthocynanins (1)
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- Allium cratericola (1)
- Allium obtusum (1)
- Allium obtusum var. conspicuum (1)
- Allium tribracteatum (1)
- Allium yosemitense (1)
- Anatomy (1)
- Anemochory (1)
- Anthocyanins (1)
- Ascomycetes (1)
- Capparaceae (1)
- Capparales (1)
- Caryocaraceae (1)
- Catalpa (1)
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- Chi/apsis (1)
- Chihuahuan Desert (1)
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- Cladistic analysis (1)
Articles 1 - 17 of 17
Full-Text Articles in Life Sciences
A Novel New Species Of Syncephalis, Richard K. Benjamin
A Novel New Species Of Syncephalis, Richard K. Benjamin
Aliso: A Journal of Systematic and Floristic Botany
Syncephalis hypogena, a new species isolated from soil collected in southern California is described from cultures on Mortierella bisporalis. Salient features of its vegetative development and reproduction, both sexual and asexual, are illustrated with photographs and line drawings. The species is distinguished from all other members of the genus in typically producing merosporangia from the lower rather than the upper hemisphere of the terminal ampulla of the sporangiophore.
Taxonomy Of The Allium Tribracteatum (Alliaceae) Complex, William R. Mortola, Dale W. Mcneal
Taxonomy Of The Allium Tribracteatum (Alliaceae) Complex, William R. Mortola, Dale W. Mcneal
Aliso: A Journal of Systematic and Floristic Botany
Allium tribracteatum and related species present a confusing array in California. Previous attempts at classification have been largely unsuccessful and keys that are available are unworkable. Herbarium and field studies were initiated to ascertain if previously overlooked characteristics could be found that would elucidate relationships within the group. Members of the complex were examined morphologically and cytologically. Based on these investigations four of the seven previously described taxa are considered valid: A. cratericola, A. obtusum, A. tribracteatum, and A. yosemitense. Allium tribracteatum is redefined and A. obtusum is divided into two varieties. Allium obtusum var. conspicuum …
Vasicentric Tracheids As A Drought Survival Mechanism In The Woody Flora Of Southern California And Similar Regions; Review Of Vasicentric Tracheids, Sherwin Carlquist
Vasicentric Tracheids As A Drought Survival Mechanism In The Woody Flora Of Southern California And Similar Regions; Review Of Vasicentric Tracheids, Sherwin Carlquist
Aliso: A Journal of Systematic and Floristic Botany
Vasicentric tracheids are defined as tracheids present adjacent to vessels in a wood which also possesses libriform fibers or fiber-tracheids as imperforate tracheary elements. Vasculartracheids would correspond with this definition, but are defined as occurring only in latewood, whereas vasicentric tracheids occur throughout a growth ring or in wood of a diffuse-porous species. V asicentric tracheids offer a subsidiary conducting system which can supply stems and leaves when the vessels to which vasicentric tracheids are adjacent fail because of air embolisms. True tracheids (present as the sole imperforate tracheary element type in the woods in which they occur) have much …
Vegetative Anatomy And Familial Placement Of Tovaria, Sherwin Carlquist
Vegetative Anatomy And Familial Placement Of Tovaria, Sherwin Carlquist
Aliso: A Journal of Systematic and Floristic Botany
Leaf, stem, node, and wood anatomy are examined for Tovaria pendula collections from Peru. Features claimed to separate Tovaria from Capparaceae have hitherto included exstipulate nodes and paracytic stomata. However, the presence of stipules and of anomocytic stomata is demonstrated, together with occurrence of probable myrosin cells in leaves and stems. The nodal type is one reported from Capparaceae. This leaves features of gynoecium and fruit, chiefly, as means of distinguishing Tovaria from Capparaceae: ovary nonstipitate, 6-8 loculate, with axile placentation; fruit a berry; ovules with two nucellus layers; endosperm well developed. These features are considered insufficient to maintain recognition …
Wind Dispersal In Californian Desert Plants: Experimental Studies And Conceptual Considerations, Jay C. Maddox, Sherwin Carlquist
Wind Dispersal In Californian Desert Plants: Experimental Studies And Conceptual Considerations, Jay C. Maddox, Sherwin Carlquist
Aliso: A Journal of Systematic and Floristic Botany
Because of the important role wind is alleged to have in dispersal of fruits and seeds in desert plants, diaspores were collected for experimental study of 14 species from two Sonoran Desert localities of Imperial Co., California. Field observations on natural dispersal of these species also were made. Although all 14 species were not judged to be primarily adapted to anemochory, tests on air transport capability were made using a calibrated and modified seed-blowing machine. Diaspores were tested individually and results for 20 trials averaged for each experimental condition. In one series of tests, lofting ability was determined. In other …
Comparative Anatomical Studies In Danthonia Sensu Lato (Danthonieae: Poaceae), Kay L. Tomlinson
Comparative Anatomical Studies In Danthonia Sensu Lato (Danthonieae: Poaceae), Kay L. Tomlinson
Aliso: A Journal of Systematic and Floristic Botany
Leaf anatomy and lodicule micromorphology were examined for representative species of Danthonia, 12 of its segregate genera, Cortaderia, and Schismus. Major conclusions are: 1) Generic status for the segregates Centropodia, Dregeochloa, Monachather, and Pseudopentameris is supported; these genera appear isolated in the Danthonieae. 2) Rytidosperma appears to be distinct from Danthonia s.s., and from Chionochloa. 3) Suggested close relationships between Merxmuellera and Chionochloa, and between Chionochloa and Cortaderia, are not supported. 4) Karroochloa and Schismus appear to be closely related. 5) Danthonia cachemyriana and D. exilis may be more closely related to Karroochloa than to Danthonia s.s.
Anthocyanins Of Bignoniaceae. Ii. Additional Data And Cladistic Analysis, Ron Scogin
Anthocyanins Of Bignoniaceae. Ii. Additional Data And Cladistic Analysis, Ron Scogin
Aliso: A Journal of Systematic and Floristic Botany
Floral anthocyanins for 13 species of Bignoniaceae are reported, including the first report of the occurrence of acylated anthocyanins in this family. No additional occurrences of 3-desoxyanthocyanins were detected. The Hennigian cladogram based on floral pigments agrees poorly with phylogenetic affinities postulated on the basis of more general taxonomic characters.
Morphology And Relationships Of A New Species Of Microsomyces (Ascomycetes: Laboulbeniales) From Illinois, Richard K. Benjamin
Morphology And Relationships Of A New Species Of Microsomyces (Ascomycetes: Laboulbeniales) From Illinois, Richard K. Benjamin
Aliso: A Journal of Systematic and Floristic Botany
Microsomyces telephani, a new species of Laboulbeniaceae, is described from collections found on Telephanus velox (Coleoptera: Cucujidae) from Illinois. Features of development and maturity of the new species are illustrated with photographs and line drawings. Microsomyces telephani differs from the type and previously only known species of the genus, M. psammoechi, in its larger, more highly corticated receptacle, which bears secondary appendages, and in its larger primary appendage, which typically bears several antheridial phialides. Among known genera of Laboulbeniales, Microsomyces is thought to be most closely related to Cucujomyces.
Nomenclature Note, Sherwin Carlquist
Nomenclature Note, Sherwin Carlquist
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
Wood Anatomy And Familial Status Of Viviania, Sherwin Carlquist
Wood Anatomy And Familial Status Of Viviania, Sherwin Carlquist
Aliso: A Journal of Systematic and Floristic Botany
Wood of three species of Viviania from Chile was studied. The wood has growth rings, moderately grouped vessels, helical sculpture in vessels, fiber-tracheids with small pits, and various degrees of storying. Axial parenchyma and rays are absent, regardless of age of stem. These facts are in accord with close relationship to other genera of Geraniaceae sl. Viviania differs from other Geraniaceae in presence of borders on imperforate tracheary elements and presence of endosperm; other differences (polyporate pollen; loculicidal capsules) are shared with some other genera which have familial status according to some authors, subfamilial status according to others. Viviania is …
Experimental Studies On Epizoochorous Dispersal In Californian Plants, Sherwin Carlquist, Quinn Pauly
Experimental Studies On Epizoochorous Dispersal In Californian Plants, Sherwin Carlquist, Quinn Pauly
Aliso: A Journal of Systematic and Floristic Botany
Experiments studying degrees of adherence ability to various surfaces were undertaken with presumably epizoochorous diaspores of 14 native and eight introduced species from southern California. A commonly available laboratory shaker was modified so as to provide a standard means for dislodging diaspores from surfaces. Diaspores were dropped onto a cloth-covered board and percentages of dislodged diaspores recorded after inversion and then after intervals of shaking. Three fabrics were used: a velvet with short pile, an artificial wood with short curly strands, and a furlike fabric with straight strands. Attachment to the velvet was nil for most species, showing that a …
A Taxonomic Revision Of Chilopsis (Bignoniaceae), James Henrickson
A Taxonomic Revision Of Chilopsis (Bignoniaceae), James Henrickson
Aliso: A Journal of Systematic and Floristic Botany
The genus Chilopsis contains one species, C. linearis, with two subspecies: subsp. linearis of the Chihuahuan Desert characterized by erect, straight leaves, and subsp. arcuata of the Sonoran and Mojave deserts with longer, arcuate leaves and other distinguishing characteristics. Populations of subsp. linearis east of the Sierra Madre Oriental in eastern Mexico have woolly stems and are described as a new variety, tomenticaulis. Relationships between Chilopsis and Catalpa are discussed and data are presented supporting continued recognition of Chilopsis as a distinct genus.
Xerospiraea, A Generic Segregate Of Spiraea (Rosaceae) From Mexico, James Henrickson
Xerospiraea, A Generic Segregate Of Spiraea (Rosaceae) From Mexico, James Henrickson
Aliso: A Journal of Systematic and Floristic Botany
The xeromorphic Mexican spiraeas (S. hartwegiana and S. northcraftii) are shown by cladistic and phenetic analysis to be more closely allied to Petrophytum, Kelseya, and Luetkea than to the more mesophytic Spiraea. Within Spiraea the Mexican spiraeas appear more closely related to the Old World subgenus Metaspiraea. The xeromorphic Mexican spiraeas, as well as Petrophytum, Kelseya and Luetkea, are considered to be New World derivitives of Old World Spiraea subgenus Metaspiraea that have become part of the Madro-Tertiary Geoflora, with each genus achieving some level of xeromorphic adaptation. The Mexican spiraeas are thus considered generically distinct and are …
Trends In Pollination Biology, Herbert G. Baker
Trends In Pollination Biology, Herbert G. Baker
Aliso: A Journal of Systematic and Floristic Botany
An effusion of books and articles on pollination biology has appeared recently, showing a renewed interest in this area of reproductive biology that has strong significance for the continuous evolution of seed plants. Consequently, a comprehensive review is not possible in this paper; topics have been selected and a restricted number of examples given. New findings in "classical" pollination scenarios are reported, while newer topics include the chemistry of nectar in relation to phylogeny and pollinator types. The formation of "pollination ecotypes" within species is considered but the obstructive influence of "phylogenetic constraint" on close adaptation between flower and pollinator …
Monographing In The 1980s, Ghillean T. Prance
Monographing In The 1980s, Ghillean T. Prance
Aliso: A Journal of Systematic and Floristic Botany
The production of taxonomic monographs is discussed in light of the modern tools that are available for their preparation. There is a great need for more monographs since much of the world's flora is not treated in contemporary revisions. These should be a balance between the traditional aspects that must still be employed such as the nomenclatural framework and the consultation of type specimens, and the use of modem techniques, computer data analysis and field work. The importance of field studies in association with monographic studies is stressed both to give a better understanding of traditional morphological features and to …
Morphology And Anatomy Of Foliar Nectaries And Associated Leaves In Mallotus (Euphorbiaceae), Thomas S. Elias, Sun An-Ci
Morphology And Anatomy Of Foliar Nectaries And Associated Leaves In Mallotus (Euphorbiaceae), Thomas S. Elias, Sun An-Ci
Aliso: A Journal of Systematic and Floristic Botany
The morphology and anatomy of the foliar nectaries and associated leaves offour species of Mallotus (Euphorbiaceae) were studied. Light microscopic observations of paraffin- and plastic-embedded specimens were complemented with scanning electron micrographs. Leaf anatomy of the four species is typical of large mesophytic plants. Aattened foliar nectaries are shown to be composed of specialized epidermal cells. The nonvascularized nectaries consist of narrow columnar cells each with a large nucleus, numerous vacuoles, and dense cytoplasm. Subglandular parenchyma cells have more pronounced nuclei, more vacuoles and denser cytoplasm than do typical laminar parenchyma. Structurally, these nectaries are similar to those found in …
Observations On Functional Wood Histology Of Vines And Lianas, Sherwin Carlquist
Observations On Functional Wood Histology Of Vines And Lianas, Sherwin Carlquist
Aliso: A Journal of Systematic and Floristic Botany
Types of xylem histology in vines, rather than types of cambial activity and xylem conformation, form the focus of this survey. Scandent plants are high in conductive capability, but therefore have highly vulnerable hydrosystems; this survey attempts to see what kinds of adaptations exist for safety and in which taxa. A review of scandent dicotyledons reveals that a high proportion possesses vasicentric tracheids (22 families) or true tracheids (24 families); the majority of scandent families falls in these categories. Other features for which listings are given include vascular tracheids, fibriform vessel elements, helical sculpture in vessels, starch-rich parenchyma adjacent to …