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276 results for “Calystegia”
Impacts of Nutrient Availability on Calystegia Spithamaea at Harvard Forest 2013
Low bindweed (Calystegia spithamaea (L.) Pursh ssp. spithamaea, Convolvulaceae), is a low-growing perennial plant of the morning glory family that ranges from Georgia north to Nova Scotia. It is recorded from 3 extant and 8 historic stations in Massachusetts, and 18 total extant populations across New England, where it inhabits dry, open sites with sandy to rocky soils, including sandy roadsides and path edges, inland sandplains, power line rights-of-way, loose talus slopes, and gravel pits. Massachusetts lists the species as S1, Endangered. Factors promoting reproduction in this rare species are largely unknown. Although Calystegia spithamaea has been noted to produce short rhizomes, its ability to spread vegetatively had not been determined as of 2013. Sexual reproduction is very rare in extant New England populations; although herbarium specimens show flowers, fruits are rare and seeds have not been collected at any population. Field studies have been conducted since 2007 of a population of several thousand ramets of Calystegia spithamaea in a minimally managed field on the Army Corps of Engineers Birch Hill Dam property, Royalston, Massachusetts. The population occurs on excessively drained, sandy loam, which supports otherwise low plant diversity and appears to be nutrient-poor. We tested the hypothesis that nutrient limitation may hinder sexual reproduction and ramet growth in this species. From May to August 2013, a greenhouse study was conducted at Harvard Forest to determine the effects of nutrient availability on Calystegia spithamaea growth and reproduction: Ramets were excavated from the field and were found to be propagating on long rhizomes, confirming for the first time that the species is capable of at least limited asexual reproduction. Forty-eight ramets of Calystegia spithamaea were planted in pots in the greenhouse and randomly allocated to one of two treatments: control and nutrient-amendment with 20:20:20 N:P:K fertilizer. Five ramets from a ne
Herbarium specimen image of Calystegia silvatica Griseb., part of the collection of Royal Botanic Gardens, Kew
Part of a training dataset of scanned herbarium specimens. The data paper and a summary landing page will be published on Zenodo as it gets published.<br><br>Content of this deposition:<br><br>- A JSON-LD datafile listing the label data associated with this herbarium specimen. The Darwin and Dublin Core data standards are used for most values.<br>- A JPEG image file of the scanned herbarium sheet.<br>- A lossless TIFF image from which the JPEG image has been derived.
Calystegia sepium (Convolvulaceae) - inflorescence - lateral view of flower
Image of Calystegia sepium (Convolvulaceae) - inflorescence - lateral view of flower
Calystegia sepium (Convolvulaceae) - leaf - basal or on lower stem
Image of Calystegia sepium (Convolvulaceae) - leaf - basal or on lower stem
Calystegia sepium (Convolvulaceae) - stem - showing leaf bases
Image of Calystegia sepium (Convolvulaceae) - stem - showing leaf bases
Calystegia sepium (Convolvulaceae) - leaf - basal or on lower stem
Image of Calystegia sepium (Convolvulaceae) - leaf - basal or on lower stem
Calystegia sepium (Convolvulaceae) - inflorescence - frontal view of flower
Image of Calystegia sepium (Convolvulaceae) - inflorescence - frontal view of flower
Calystegia sepium (Convolvulaceae) - inflorescence - whole - unspecified
Image of Calystegia sepium (Convolvulaceae) - inflorescence - whole - unspecified
Calystegia sepium (Convolvulaceae) - whole plant - in flower - general view
Image of Calystegia sepium (Convolvulaceae) - whole plant - in flower - general view
Calystegia sepium (Convolvulaceae) - stem - showing leaf bases
Image of Calystegia sepium (Convolvulaceae) - stem - showing leaf bases
Calystegia sepium (Convolvulaceae) - leaf - on upper stem
Image of Calystegia sepium (Convolvulaceae) - leaf - on upper stem
Calystegia sepium (Convolvulaceae) - inflorescence - lateral view of flower
Image of Calystegia sepium (Convolvulaceae) - inflorescence - lateral view of flower
Calystegia sepium (Convolvulaceae) - leaf - unspecified
Image of Calystegia sepium (Convolvulaceae) - leaf - unspecified
Calystegia sepium (Convolvulaceae) - whole plant - in flower - general view
Image of Calystegia sepium (Convolvulaceae) - whole plant - in flower - general view
Calystegia sepium (Convolvulaceae) - inflorescence - frontal view of flower
Image of Calystegia sepium (Convolvulaceae) - inflorescence - frontal view of flower
Calystegia soldanella (L.) R.Br. (BR0000010013137)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calystegia soldanella (L.) R.Br. (BR0000010012680)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calystegia soldanella (L.) R.Br. (BR0000010012932)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calystegia soldanella (L.) R.Br. (BR0000010012284)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calystegia soldanella (L.) R.Br. (BR0000010012345)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
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