The Families of Flowering Plants. I. Dicotyledons

A Revised Terminology for the Spore‐containing Parts of Anthers

“…AH of the above terms, and a few others besides, have found their way into various text books of general botany, taxonomy, morphology and anatomy. Thus theca is 402 J. W. GREEN referred to by Sachs (1875), Vines (1896), Willis (1931), Lawrence (1955), Melchior (1964) and von Denffer et al (1976), loculus by Hutchinson (1973) and Radford et al (1974), cell by Lawrence (1951Lawrence ( , 1955 and anther lobe by Sachs (1875) and Hill, Popp and Grove (1967). The terms are mostly explained in descriptive text or by reference to a diagram, usually of the anther of Lilium.…”

“…While not using the term locellus, Rendle (1930) described the origin of such compartments from transverse bands of sporogenous tissue which remain sterile between suecessive sets of spore mother cells. Locelli have been described in the families Bonnetiaceae, Aegicerataceae (Hutchinson, 1973), Mimosaceae (Rendle, 1930;Newman, 1933), Onagraceae (Rendle, 1938), Loranthaceae and Gentianaceae (Eames, 1961).…”

“…Eames (1961) stated that when more than four, the number is nearly always eight and, in some taxa, represents connation of two anthers. Davis (1966) expressed surprise that information 'for a character so easily deter-mined' should be laeking in almost half the families of angiosperms reeognized by Hutchinson (1959) and blamed 'the assumption that anthers are invariably tetrasporangiate', together vi^ith loose usage of the term loculus, 'which may refer either to the number of sporangia or to the cavities in the anther immediately prior to dehiscence'. She also pointed out that some of the examples of bisporangiate anthers mentioned in the literature w^ere open to question because they may repiesent not the number of sporangia but the number of cavities (loculi) formed by breakdown of the sterile partitions between the members of each pair of microsporangia.…”

“…Fig. 14, tetrasporangiate, unilocular anther of Globularia (Glohulariaceae) (after Hutchinson, 1973); Figs 15 to 17, trisporangiate, unilocular anther of Corynanthera (Myrtaceae) (Green, 1979); 15, external view; 16, transverse section of trisporangiate region a-a'; 17, transverse section of stomial region after dehiscence. d, zone of dehiscence; e, endothecium; f, fibrous layer; 1, loculus; m, microsporangium; s, stomium; t, tapetum.…”

Cardiac glycosides from Cryptostegia grandiflora

“…(Asclepiadaceae) is an ornamental plant commonly cultivated in Egypt and warm countries (Metcalf and Chalk, 1950;Chopra et al, 1965;Hutchinson, 1973). The plant has a wide use in manufacturing of rubber and as a source of hydrocarbon fuels from its latex (Mehta et al, 1982).…”