Stomata in Cochlospermaceae (dicots)

Photo credit: Google

Cochlospermum planchonii | by Warren McCleland 

Photo credit Google – Cochlospermum tinctorium – Cochlospermum planchonii | by Warren McCleland

The leaf anatomy of the species of Cochlospermum Kunth.(Cochlospermaceae) in West Africa

by Ogundipe O. T., Olatunji O. A. (1991)

Obafemi Awolowo University, Department of Botany, Ile-Ife, Nigeria

in Feddes Repertorium 1991; 102: 183-187 – DOI: 10.1002/fedr.19911020306 – 

http://onlinelibrary.wiley.com/doi/10.1002/fedr.19911020306/abstract

Abstract

The leaf anatomy of the species of Cochlospermum Kunth occurring in West Africa is described.

The stomata occur only on the lower surfaces of the leaves. The vasculature in the petiole is of medullated type in C. planchonii, while it is are with adaxial traces in C. tinctorium. Angular collenchyma is present in the petiole. Epidermis and mesophyll are uniseriate. Unicellular hairs occur on both surfaces of C. planchoni but vary in density.

The two species can therefore be limited on the basis of anatomical characters.

Stomata in Amaranthaceae (dicots)

 

Comparative foliar epidermal morphology of the West African Species of Amaranthaceae Juss.

by Ogundipe O. T., Kadiri A. B. (2013)

in Feddes Repertorium, 123(2): 97-116. – DOI: 10.1002/fedr.201100003 – 

http://onlinelibrary.wiley.com/doi/10.1002/fedr.201100003/abstract

Abstract

The species are generally amphistomatic except Pandiaka heudelotii that is hypostomatic.

Anomocytic and paracytic stomatal types were mostly found but cyclocytic and diacytic types may accompany, especially in Cyathula spp.

The anticlinal wall pattern varies from undulate to curved and curved-straight in the family.

Other useful epidermal features are peltate scales, trichomes of different types such as candelabra type, unicellular and multicellular conical types, long acicular glandular forms that may be tuberculate or non-tuberculate and the filiform type; all can be employed at species level for delimitation purpose.

Sub-familial grouping of the genera is supported while monophyly and polyphyly suggested in Gomphrenoideae and Amarantheae respectively can be inferred from the extent of character variations in the species.

An indented dichotomous key is presented for species delimitation.