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- Aeration in wood (1)
- Aquatic ecology (1)
- Arceuthobium (1)
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- Dacrydium guillauminii (1)
- Dwarf mistletoes (1)
- Ecological anatomy (1)
- Eriastrum (1)
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Articles 1 - 3 of 3
Full-Text Articles in Life Sciences
Sem Studies Of Two Riparian New-Caledonian Conifers Reveal Air Channels In Stem Wood; Field Observations, Sherwin Carlquist, Mare Nazaire
Sem Studies Of Two Riparian New-Caledonian Conifers Reveal Air Channels In Stem Wood; Field Observations, Sherwin Carlquist, Mare Nazaire
Aliso: A Journal of Systematic and Floristic Botany
Two New Caledonian conifers, Dacrydium guillauminii and Retrophyllum minor, both of Podocarpaceae, occupy distinctive habitats in which roots are characteristically inundated. SEM studies of stem wood anatomy of both reveal characteristic vertical intercellular channels, not apparent in light microscope examination. These channels are regular in spacing as seen in radial sections and indefinite in vertical extent; they were observed only adjacent to rays. These channels, not reported in other conifers, are a potential source of aeration for roots and submersed stem portions. Other wood details are reported. In order to provide a more comprehensive picture of adaptation to these …
A Morphometric Analysis Of Arceuthobium Campylopodum And Arceuthobium Divaricatum (Viscaceae), Robert L. Mathiasen, Shawn C. Kenaley, Carolyn M. Daugherty
A Morphometric Analysis Of Arceuthobium Campylopodum And Arceuthobium Divaricatum (Viscaceae), Robert L. Mathiasen, Shawn C. Kenaley, Carolyn M. Daugherty
Aliso: A Journal of Systematic and Floristic Botany
Although the classification of pinyon dwarf mistletoe (Arceuthobium divaricatum, Viscaceae) has not been controversial to any extent since Engelmann described it in 1878, a recent taxonomic treatment has included this species in western dwarf mistletoe (A. campylopodum). While pinyon dwarf mistletoe is only known to parasitize pinyon pines (Pinus subsection Cembroides), western dwarf mistletoe as it has been known since the late 1800s is a principal parasite of Pinus ponderosa and P. jeffreyi and has never been observed parasitizing pinyon pines. With reservations about the recent classification of pinyon dwarf mistletoe and its treatment …
Tomus Nominum Eriastri: The Nomenclature And Taxonomy Of Eriastrum (Polemoniaceae: Loeselieae), Sarah J. De Groot
Tomus Nominum Eriastri: The Nomenclature And Taxonomy Of Eriastrum (Polemoniaceae: Loeselieae), Sarah J. De Groot
Aliso: A Journal of Systematic and Floristic Botany
A revised taxonomy for the genus Eriastrum is presented, including type information, synonymy, descriptions, and keys for identification. The nomenclature of Hugelia lanata, Gilia floccosa, and Gilia virgata var. yageri is clarified. Additionally, issues pertaining to August Brand’s, Thomas Nuttall’s, and Asa Gray’s names in Eriastrum are reviewed. An illustrated glossary of important descriptive terms is provided, along with photographs and illustrations of taxa and features. Lectotypes are proposed for 14 taxa. There is further discussion about the nomenclature and type localities for each taxon, comparison of circumscriptions from previous authors, and some field observations. Discussion of identifying …