Katalog - Lichenological literature

26344

Yoshimura I. & Kurokawa S. (1977): Sensitivities of thin-layer chromatographic tests for some lichen substances, Bulletin of Kochi Gakuen College, 8: 27-31

1. The sensitivity of thin-layer chromatography is measured for the several lichen substances. 2. The minimum quantity of each lichen substance for chromatographic detection is as follows: 0. 0025 fig (lecanoric acid) ; 0. 005 fig (lobaric acid) ; 0. 01 fig (zeorin) ; 0. 16 fig (usnic acid) ; 0. 3 fig (vulpinic acid). 3. By usual microchemical extraction, 4. 6 96 of dry weight of the thallus (Parmelia tinctorum Nyl. ) can be obtained as the crude extract of lichen substances. The results for the … Read more...

26349

Yoshimura I. & Kurokawa S. (1976): Chemical substances of Gymnoderma melacarpum, Bulletin of Kochi Gakuen Junior College, 7: 51-55

Thirty two specimens of Gymnoderma melacarpum collected in Tasmania and Australia were used for this investigation. Duplicates of specimens used in the present study are preserved in the private herbaria of Dr. Bratt and of the senior author. A thallus fragment of each specimen was extracted by acetone. The acetone extract was spotted on Merck's Precoated glass plates (Kiesel Gel 60, 100 x 250 mm). The chromatograms were developed for about 20 min at room temperature (ca. 20° C) in a solvent of … Read more...

26348

Yoshimura I. & Kurokawa S. (1980): Some behaviors of diffractaic acid and barbatic acid, Bulletin of Kochi Gakuen Junior College, 11: 7-12

1. Diffractaic acid is isolated from Usnea diffracta Vain, by using the column chromatography in chloroform and methanol (9 : 1) solvent system. 2. When diffractaic acid obtained from Usnea diffracta is developed in TLC by using acidic solvent, such as hexane, ether, formic acid (5 • 4 • 0. 7), a small spot of barbatic acid can be observed with the large spot of diffractaic acid. 3. The NMR spectra of diffractaic acid and barbatic acid are measured in the solvent of acetone-ds. Two signals of … Read more...

24080

Yoshimura I. & Osorio H. (1975): Notes on Lobaria cuprea with purple pigment, Journal of the Hattori Botanical Laboratory, 39: 263-268

Lobaria cuprea Read more...

9709

Yoshimura I. & Sharp A.J. (1968): A revision of the genus Gymnoderma, American Journal of Botany, 55: 635-640

Gymnoderma, which has been considered a monotypic genus, is composed of three species. G. insulare is described from Japan and differs from G. coccocarpum of southeastern Asia in being smaller and having a thicker cortex with didymic acid present. G. lineare from the Southern Appalachians is transferred from Cladonia because the podetia lack symbiotic algae, are solid, and are located on the marginal lower side of the thallus. Gymnoderma, including three species and possibly representing an ancestral … Read more...

13076

Yoshimura I. & Sharp A.J. (1973): First record of Anaptychia isidiza in North America, Misc. Bryol. Lichenol., 6: 85

3749

Yoshimura I. & Sharp A.J. (1968): Some lichens from the Southern Appalachians and Mexico, Bryologist, 71: 108-113

The known range of Phylliscum demangeonii (Moug. & Nestl. ex Mont.) Nyl. is extended south to the Southern Appalachians. Pilophoron cereolus (Ach.) Th. Fr., also found in the Southern Appalachians, was previously known from Mexico and the northern United States. In contrast, the range of Parmelia densirhizinata Kurok. is extended northward from South and Central America to Mexico. Anaptychia microphylla (Kurok.) Kurok. (new to North America) and Anzia ornata (new to the Philippines) show classic … Read more...

21951

Yoshimura I. & Shimada R. (1980): Fine structures of lichen plectenchymas viewed with the scanning electron microscope, Bulletin of Kochi Gakuen Junior College, 11: 13-28

[in Japanese with English abstract:] SEM study: paraplectenchyma, scleroplectenchyma, chalaroplectenchyma, prosoplectenchyma, pallisadoplectenchyma, and serioplectenchyma. In addition to the light microscope, the scanning-electron microscope was used to examine hyphal tissues of the following 7 lichen species : Candelaria concolor (Dicks.) Stein., Cetraria oakesiana Tuck., Cetrelia cetrarioides (Duby) Culb. & C. Culb., Leptogium menziesii Mont., Parmelia acetabulum (Neck.) Duby, Roccella fuciformis … Read more...

25931

Yoshimura I. & Yamamoto Y. (1991): Development of Peltigera praetextata lichen thalli in culture, Symbiosis, 11: 109-117

mycobiont culture, Peltigera, resynthesis. We obtained well-developed dorsiventral lichen thalli from cultured fragments of the natural thallus of the cyanolichen, Peltigera praetextata. The thallus obtained was composed of both dorsal and ventral cortices, a Nostoc photobiont layer, and a medulla. The dorsal cortex was composed of paraplectenchymatous hyphal tissue, but the ventral cortex was an undifferentiated plectenchymatous tissue. Different developmental stages of the cyanolichen thalli were … Read more...

26606

Yoshimura I. & Yamanaka T. (1962): Notes on Rhizocarpon geographicum f. atrovirens in Shikoku and Pertusaria on serpentine, Jour. Jap. Bot., 37(5): 156-158

In Shikoku, Rhizocarpon geographicum f. atrovirens is generally found from 1600—1700m upwards, occurring on various rocks, such as quartzite, andesite, eclogite, amphibolite, phyllite, and crystalline schists. This lichen is not found on serpentine. Exposed serpentine and serpentinized rocks are occasionally characterized by the abundant occrrence of Pertusaria sp. (see photographs), Japan Read more...