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Calystegia sepium subsp. angulata in Kansas. <http://www.kansasnativeplants.com/guide/index.php> (a) Front view of flower. (b) Side view of flower showing bracts with bases that don't overlap.
Source publication
Bindweeds are members of the Convolvulaceae (Morning-glory family) and are represented by two closely-related genera: Calystegia and Convolvulus. In North America, the genus Calystegia includes 41 taxa (19 species; 33 subspecies), three of which are known from Alabama, with an additional five taxa occurring either in Mississippi, Tennessee, Georgia...
Context in source publication
Context 1
... plant has only been collected once in the wild from wool mills in Massachusetts (Fernald 1949). The doubled-flowered form is sterile and produces no seed, thus spreading by fragmentation of its slender rhizomes (Fernald 1949). Hairy Bindweed is most commonly found in northeastern USA but also occurs in other northern states (BONAP 2013 (Fig. 7). This taxon has been erroneously reported for Alabama ( Kral et al. 2011). Its distribution is from the northern Pacific states, east through the Great Plains and sparingly in the northeast (Brummitt 1980). It grows along riverbanks, hedges, roadsides, and waste places. This taxon has been documented from Obion County in western ...
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Background
At a global scale, the temperate zone is highly fragmented both between and within hemispheres. This paper aims to investigate how the world’s disjunct temperate zones have been colonised by the pan-temperate plant group Convolvuleae, sampling 148 of the c. 225 known species. We specifically determine the number and timing of amphitropic...
Studies concerning Convolvulaceae in southern Brazil have revealed many novelties, such as new species and range extensions. In the present paper, three new species are described: Calystegia brummittii, Convolvulus ensifolius and Ipomoea mirabilis. Descriptions, illustrations and data on species distribution and conservation status are provided.
Citations
... Records from North America and Bermuda were sourced from: Beerensson (2010), Dennis (1997), Ebbesmeyer (2006), Gunn (1968), Gunn and Dennis (1999), Guppy (1917), Kubitzki and Ziburski (1994), Nelson (2006), Norton (2007), Patterson (2001); Perry and Dennis (2010), Renner (2004), Spalding (2013), Sullivan and Williams (2007), Zies (1997; and from the on-line journal the Drifting Seed (http://www. seabean.com, ...
... There are six subspecies of C. sepium occurring in North America. This includes a subspecies that occurs naturally in Europe and that has been introduced to North America (Spalding 2013). A genetic study is needed to reveal the geographical affinities of European shoreline populations of such subspecies. ...
... Calystegia is well separated from the genus Convolvulus and forms a monophyletic group. However, a worldwide contemporary monographic evaluation for this genus is not yet available, while there is still a conflict on whether it should be merged with the genus Convolvulus or remain a separate genus [39]. Further analysis of molecular data has indicated that it is in fact nested in the Convolvulus [40], although a recently published monograph of the Convolvulus genus did not include Calystegia, for pragmatic reasons [41]. ...
Plant identification from images has become a rapidly developing research field in computer vision and is particularly challenging due to the morphological complexity of plants. The availability of large databases of plant images, and the research advancements in image processing, pattern recognition and machine learning, have resulted in a number of remarkably accurate and reliable image-based plant identification techniques, overcoming the time and expertise required for conventional plant identification, which is feasible only for expert botanists. In this paper, we introduce the GReek vAScular Plants (GRASP) dataset, a set of images composed of 125 classes of different species, for the automatic identification of vascular plants of Greece. In this context, we describe the methodology of data acquisition and dataset organization, along with the statistical features of the dataset. Furthermore, we present results of the application of popular deep learning architectures to the classification of the images in the dataset. Using transfer learning, we report 91% top-1 and 98% top-5 accuracy.
... A feature they share is that C. sepium subsp. appalachiana also has a leaf sinus that is very broadly rounded (Brummitt, in prep;Spaulding, 2013). Due perhaps to the uncertainty that Brummitt had expressed in print or imparted less formally before he died, the original Arthog record as C. sepium subsp. ...
For over five decades the identity of a pink-flowered bindweed (Calystegia) with a broadly rounded leaf sinus from the coast of West Wales has been subject to debate. Initially it was thought to have American origins, but it was subsequently treated as C. sepium subsp. spectabilis, a taxon thought to have genetic links to the Far East. Additional finds of other plants on western coasts of Britain and Ireland, and their similarities to a North American subspecies of C. sepium also having a broadly rounded leaf sinus now supports the original suggestion of inheritance from a trans-Atlantic drifted migrant.
The vascular flora for Marengo County, Alabama is here documented. Marengo
County is located in the southwest portion of the state and is surrounded by eight
counties: Greene, Hale, Perry, Dallas, Wilcox, Clarke, Sumter, and Choctaw. The
primary drainage for most of the county is the Tombigbee River watershed. Portions of
the eastern and southeastern parts of the county are drained into the Alabama River
watershed. Marengo County is located entirely in the Eastern Gulf Coastal Plain
physiographic province. The Eastern Temperate Forest ecological region is the major
vegetation type found within the county.
A total of 1159 specific and infraspecific taxa and 5 hybrids, classified in 556
genera, 162 families, and 4 divisions are documented in the 254,556 hectare (629,024
acre) study area. Twenty-two taxa that are considered sensitive at state and federal levels
are listed for the county. Non-native taxa were determined to comprise 22.7 percent of
the flora. During this study, 728 county records were documented which comprises 62.5
percent of taxa represented. A total of seven distinct habitats were documented to occur
within the county.
Inspired from biology, this study presents a method for designing the fold geometry of deployable reflectors. Since the space available inside rockets for transporting satellites with reflector antennas is typically cylindrical in shape, and its cross-sectional area is considerably smaller than the reflector antenna after deployment, the cross-sectional area of the folded reflector must be smaller than the available rocket interior space. Membrane reflectors in aerospace are a type of lightweight structure that can be packaged compactly. To design membrane reflectors from the perspective of deployment processes, bionic applications from morphological changes of plants are investigated. Creating biologically inspired reflectors, this paper deals with fold geometry of reflectors, which imitate flower buds. This study uses mathematical formulation to describe geometric profiles of flower buds. Based on the formulation, new designs for deployable membrane reflectors derived from bionics are proposed. Adjusting parameters in the formulation of these designs leads to decreases in reflector area before deployment.
