biocanvas:

A fungal infection (bright green) of an Arabidopsis (a plant related to cabbage and mustard) root.

Image by Kirk Czymmek, University of Delaware.

biocanvas:

A crosscut from the leaf of a cedar tree, Cedrus atlantica.

Image by Christian Gautier.

biocanvas:

A 1300-times magnified view of the anther of Convallaria majalis, lily of the valley. Pollen grains are in green.

Image by Albert Tousson, University of Alabama at Birmingham.

universe-of-waves:

(via infinity-imagined)

scipsy:

Pinus monophylla leaf (via sols.unlv.edu)

Oxalis enneaphylla (D.C. Parda? i.702) collected on the Falkland Islands.

Oxalis decaphylla (Hutchins 9837), from Catron County NM.

stilllifequickheart:

Julia Loken

Artichoke

2011

scipsy:

Tyloses shown in a tangential longitudinal view of a secondary xylem vessel (via Botanical Society of America)

universe-of-waves:

root growth

(via infinity-imagined)

scipsy:

Longitudinal section of developing caryopsis of maize ancestor, teosinte (via Botanical Society of America)

About the Image

Longitudinal section of developing caryopsis of maize ancestor, teosinte (Zea mays ssp. parviglumis, caryopsis diameter cca. 3 mm). Teosinte plants differ significantly from domesticated maize Zea mays ssp. mays. Teosinte plants have many lateral branches with terminal male inflorescences, which closely resemble maize tassels, and small female inflorescences or “ears”, which are very different from maize ears, in leaf axils. Kernels in the teosinte ears are arranged in two rows and enclosed in hard cupulate fruitcases (fruitcases turn brown if they contain fertilized kernels), and they disarticulate at maturity. In contrast with the highly dissimilar morphology of the teosinte caryopsis, various cellular processes in the filial seed inside the glumes are remarkably similar to maize (which lacks prominent glumes). Endosperm cells in the developing teosinte kernels undergo endoreduplication—multiple duplications of the whole nuclear genome without intervening cell division, resulting in endopolyploid cells. The colored bubbles superimposed on a section of the developing teosinte kernel represent the nuclei in the seed (embryo and endosperm) and in the pericarp (mature ovary wall). Different classes of endopolyploidy are represented by different colors, and the size of the bubbles is proportional to the ploidy level of the nuclei.

For further detail, see: Dermastia et al.—A cellular study of teosinte Zea mays subsp. Parviglumis (Poaceae) caryopsis development showing several processes conserved in maize Volume 96, Issue 10, pages 1798–1807. Photo credit: Aleš Kladnik.

scipsy:

Scanning electron microscope image of pollen from Sildalcea malviflora (prairie hollyhock). (via)

olio-ataxia:

Phytological History 1673 Nehemiah Grew

from: ‘An Idea of a Phytological History Propounded, Together with a Continuation of the Anatomy of Vegetables, Particularly Prosecuted upon Roots’, 1673, also at SICD.

(via scientificillustration)

geneticist:

Thyme-moss under a light microscope. Its many chloroplasts are clearly visible.

(via infinity-imagined)