Elaborate petals and staminodes in eudicots: Diversity, function, and evolution

Petals, a characteristic feature of eudicots, have evolved elaborations in various ways and across diverse clades. In this survey of petal and staminode elaborations throughout the eudicots, based on both new studies and a review of the literature, the diversity of such structures and their functions is discussed. Petal elaborations are primarily present as marginal lobes and ventral lobes of various shapes. Lobation patterns can be loosely classified as pinnate, binate, or ternate. One of these patterns may be dominant within a family (e.g. pinnate in Anisophylleaceae, binate in Caryophyllaceae, ternate in Elaeocarpaceae); transitional forms also occur (e.g. between binate and ternate in Onagraceae). Coronas between the corolla and androecium are found in several groups, for example in several families of Malpighiales or in Apocynaceae. In some clades, petal elaborations are especially prominent and can be used as approximate systematic markers (Anisophylleaceae, Elaeocarpaceae, Rhizophoraceae). Petal elaborations are especially diverse in rosids. In asterids, which are characterized by sympetaly, elaborations are more conspicuous at the level of the architecture of the entire corolla, rather than at the level of individual petals. Evolutionary trends in petal elaboration in certain larger clades are shown and their involvement in floral biological functions is discussed.     

Elektrische Potentiale der Haut

Zusammenfassung Aus unseren Versuchen, die durch konforme am Darm ergänzt werden 1), läßt sich schließen, daß bei der gerichteten Wanderung charakteristisch geladener Substanzen und des Wassers durch die tierische Haut die elektrische Kataphorese sicherlich beteiligt ist.     

Die GattungSaponaria SubgenusSaponariella Simmler

Ohne Zusammenfassung     

Phenylalanine Absorption and Metabolism in Parkinsonian Patients

Oral and intravenous L-phenylalanine loading tests were performed in 13 Parkinsonian patients and in 12 control subjects matched for age and weight. The results showed a normal intestinal absorption and a normal elimination from plasma of phenylalanine in the Parkinsonian patients.     

The clinical evaluation of diagnostic prostaglandin test

An oral prostaglandin test with PGE2 in a dose 0.5 mg was performed on 44 women in the last week of pregnancy. During 30 minutes of cardiotocographic recording, two types of contractile activity of the uterus were observed: regular and irregular. Women with regular uterine activity have statistically significantly higher serum oxytocinase level and also a shorter duration of labour.Thus, these two types of uterine activity may also be distinguished by enzyme as well as labour data.     

Über eine Eigentümlichkeit der Partialinfloreszenzen vonAesculus glabra W.

Ohne Zusammenfassung