This paper describes the ginkgoaleans (Ginkgoites) and conifers (Palissya, Stachyotaxus, Schizolepis) of Rhaetian flora from Wüstenwelsberg, as well a new species cycad Becklesia. The ginkgophyte leaf fragments are very abundant in certain levels (‘Blätterkohle‘) whereas common main fossiliferous bed. Wüstenwelsberg specimens extend range for Ginkgoites taeniatus Hettangian to genus Becklesia C...

Many cultivars of ornamental conifers are difficult to propagate. Cuttings may root poorly and graft success may be highly variable even in the hands of skilled, experienced propagators. Because of these problems, we conducted a detailed study of the physiology of graft formation in Picea pungens 'Hoopsi' scions grafted on Picea abies rootstocks with the purpose of identifying factors limiting ...

Lactarius rubriviridis sp. nov., characterized by hypogeous, sequestrate basidiomes with red latex, green stains, and forcibly discharged, reticulate basidiospores is described and illustrated. During the Spring, the new species forms basidiomes associated with conifers at 1400-1800 m elevation in the Sierra Nevada, and is known from two specimens collected 19 yr apart. Comparisons with the put...

The main component presents in the epicuticular waxes of needles of Pinus halepensis and the most of conifers, the secondary alcohol nonacosan-10-ol, has been investigated by X-ray diffraction and differential scanning calorimetry. The results obtained from these physical techniques permitted to establish a definitive structural model of the molecular arrangement of this wax, basically in good ...