JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Mycological Society of America is collaborating with JSTOR to digitize, preserve and extend access to Mycologia.
Over 70 cases of keratosis follicularis (Darier's disease) were noted in a study of a single kindred consisting of more than 200 individuals. Data were obtained through questionnaires, interviews and physical examinations. Results strongly support an autosomal dominant mode of inheritance since the ratio of affected to unaffected members was I:I and there were nearly equal numbers of males and females with this condition. Large sibships were common in this kindred, which extended over seven generations, and most of the affected individuals were located in the southwestern New York-northwestern Pennsylvania region of the United States.
JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.New York 14778). Stem and root anatomy of Monotropa uniflora. Bull. Torrey Bot. Club 99: 89-94. 1972.-Quantitative studies of the vascular tissue of Monotropa uniflora L. reveal that the amount of xylem is significantly greater than the amount of phloem. In the stem, vascular tissue occurs in eustelic arrangement. An ontogenetic sequence from annular protoxylem tracheids to scalariform-reticulate metaxylem vessels is observed. Insoluble polysaecharides are stored in the cortical regions of the middle and upper stem during July. The root system is composed of first, second and third order roots uniformly covered by a dense mycorrhizal sheath that is neither strictly ectotrophic nor endotrophic. Mycelial penetration is greatest in second order roots. The stelar arrangement of the root varies: complex first order roots are typically hexarch; second order roots, tetrarch or triarch; third order roots, protostelic. Trachearv elemeints are scalariform-reticulate tracheids and vessel members.
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