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Journal ArticleDOI

Anatomy of the Dicotyledons.

About: This article is published in American Midland Naturalist.The article was published on 1950-11-01. It has received 2511 citations till now.
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Journal ArticleDOI
TL;DR: Plants of grasslands on the Tibetan Plateau showed typical characteristics to adapt to the alpine environments, such as thicker epidermal and mesophyll layers than plants in other areas, and thickness of leaf anatomical structures varied in different degrees.

23 citations

Journal ArticleDOI
TL;DR: In this paper, a comparison between urban and rural selenite black crusts has been made with genetically identical ones encountered on gypsum outcrops in the area surrounding the same city, in a relatively clean rural environment.

23 citations

Journal ArticleDOI
TL;DR: The leaf epidermis of 14 Onosma L. species was examined by light and scanning electron microscopy (SEM) and found that these characters are variable in the genus but usually they are stable within a species.
Abstract: The leaf epidermis of 14 Onosma L. species was examined by light and scanning electron microscopy (SEM). The leaf characters studied showed some variations. Morphologic features of the epidermal cells such as shape, structure of the anticlinal walls, stomatal size, outer stomatal rims, peristomatal rims, and apertures were summarised in the examined taxa. It was found that these characters are variable in the genus but usually they are stable within a species. Epidermal cells of the investigated taxa are polygonal, elongated, or irregular. Anticlinal walls of the epidermal cells are generally straight to curved and repand. Apertures are long, ellipsoidal, and narrow. SEM studies in particular provided some useful information concerning the systematics of Onosma taxa.

23 citations


Cites background from "Anatomy of the Dicotyledons."

  • ...Metcalfe and Chalk (1979) pointed out that there were both anomocytic and anisocytic stomata in this family....

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  • ...The importance of leaf and epidermis morphology for classification has been recognised and studied by many authors (Baranova, 1972; Metcalfe & Chalk, 1979; Baranova, 1992; Ma et al., 2004; Yang & Lin, 2005; Mavi et al., 2011; Szymura & Wolski, 2011)....

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  • ...The terminology mainly follows Baranova (1972), Metcalfe and Chalk (1979), and Yang and Lin (2005)....

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  • ...Metcalfe and Chalk (1979) explained the general characteristic properties of the family Boraginaceae, including some details of the genus Onosma....

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Journal ArticleDOI
01 Jul 1984
TL;DR: The attributes of Nyctanthes are reviewed and found compatible with accommodation of the genus in the Oleaceae, tribe Jasmineae, and the treatment of this genus in Verbenaceae or as a separate does not reflect its true affinities.
Abstract: The attributes ofNyctanthes (habit, floral morphology, fruit and seed, stem and leaf anatomy, flower vasculature, embryology, pollen, chromosome number and phytochemistry) are reviewed and found compatible with accommodation of the genus in the Oleaceae, tribe Jasmineae. The treatment ofNyctanthes in Verbenaceae or as a separate does not reflect its true affinities.

23 citations

Journal ArticleDOI
01 Jan 1984-Flora
TL;DR: Histochemical aspects of the development and secretion mechanism of the clubbed mucilageproducing trichomes in Thymus vulgaris L. were studied by conventional, fluorescence and scanning electron microscopy.

23 citations