Stomata types in 180 species of 41 plant families

Epidermal characteristics of toxic plants for cattle from the Salado river basin (Buenos Aires, Argentina)

by FREIRE S. E., ARAMBARRI A. M., BAYÓN N. D., SANCHO G., URTUBEY E., MONTI C., NOVOA M. C., COLARES M. N. (2005)

in Bol. Soc. Argent. Bot. 40 (3-4): 214-281

Fig. 7 . Stomatal types. a-f , anisocytic: a , Polygonum aviculare ; b , Raphanus sativus ; c , Sida rhombifolia ; d , Turnera sidoides subsp. pinnatifida ; e , Adesmia bicolor ; f , Nicotiana glauca ; g , polycytic: Plantago australis ; h , cyclocytic: Baccharis notosergila ; i , parallelocytic: Portulaca oleracea ; j, k , diacytic: j , Lamium amplexicaule ; k , Ammi majus ; l , hexacytic: Opuntia arechavaletae ; m-r , paracytic: m , Convolvulus arvensis ; n , Oxypetalum solanoides ; o , Galium richardianum ; p , Ricinus communis ; q , Senna corymbosa ; r, Vinca major . Scale bars: a-d, g, j-p, r = 50 μm; e, f, h, i, q = 100 μm.

Summary:

One hundred and eighty species belonging to 41 families inhabiting the Salado River Basin of the province of Buenos Aires (Argentina) were previously reported to be toxic for cattle.

The purpose of this study was to provide a tool to distinguish the taxa when the plant material is disintegrated. In this way, an approach to the identification of these taxa through leaf epidermal features (anticlinal epidermal cell wall patterns, cuticular ornamentation, stomata, and hair types) is

performed. A key to the 180 species as well as illustrations of diagnostic characters are given.

Caracteres epidérmicos de las plantas tóxicas para el ganado de la Depresión del Salado (Buenos Aires, Argentina).

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Excerpt

Stomata types were classified according Metcalfe & Chalk (1950, 1979) and Van Cotthem (1970), however, to establish the monocotyledons types, we followed Fryns-Claessens & Van Cotthem’s (1973) classification.

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Stomata in Baccharis (Asteraceae)

Photo credit: Google

Baccharis pilularis

EPIDERMAL CHARACTERS OF BACCHARIS (ASTERACEAE) SPECIES USED IN TRADITIONAL MEDICINE

by Freire S. E., Urtubey E., Giuliano D. A. (2007)

in Caldasia vol.29 no.1 Bogotá Jan./June 2007

Figura 2. Stomata.- A: actinocytic and staurocytic stomata, B. conferta; B: actinocytic and tetracytic stomata, B. boliviensis; C: anisocytic stomata, B. crispa; D: anomocytic stomata, B. trimera; E: cyclocytic stomata, B. notosergila; F: cyclocytic stomata, B. illinita; G: anomocytic stomata, B. pentlandii. -http://www.scielo.org.co/img/revistas/cal/v29n1/v29n1a3fig2.gif

ABSTRACT

A morphological study of 38 species of Baccharis used in traditional medicine was carried out to provide some epidermal characters that will contribute to the knowledge of the genus.

The present study revealed:

1) seven different types of trichomes: conical, aseptate flagellate, filiform flagellate, 1-armed, 2-4-armed, bulbiferous flagellate, and glandular biseriate;

2) that 28 of the total of 38 species have trichomes in tufts;

3) six different types of stomata: anomocytic, anisocytic, cyclocytic, actinocytic, tetracytic, and staurocytic;

4) that some trichome types, such as 2-4-armed (B. dracunculifolia) and aseptate flagellate branched (B. trinervis), show a high diagnostic value;

5) that the stomata types can be used to differentiate species with similar trichomes type (e.g. B. trimera and B. articulata).

Illustrations of the studied characters are provided.

Read the full article: SCIELO

Stomata in toxic plants