• 作者： 張鍵官; 吳午龍
• 作者服務機構： 國防醫學院藥學系
• 中文摘要： 省產毛地黃 (Digitalis purpurea)經實驗結果示知：大雪山野生毛地黃，其生物評價及成分
  之含量均高出藥典標準；可用於大量栽培與提取其主成分—毛地黃毒?。
• 英文摘要： Carrot was severely infected with powderymildew in the experiment field in the campusof the National Chung Hsing University, Tai-chung, Taiwan, from the winter of 1978 to thespring of 1979. The asexual stage of the causalorganism was the same as that reported byWu in Taipei in 1977. The fungus formedcylindric-oblong or elliptic, hyaline, granulate,one-celled conidia, solitarily on short, unbranchconidiophores. The conidia ranged from 29.4-52.9 x 8.8-20.6 m with average of 42.6 x 14.5 m.Conidiophores were erect, hyaline, with 0-2septae, without swollen foot cell. The perfectstage of the fungus was also observed on theinfected leaves. It produced brownish black,spherical cleistothecia with no ostiole, but boremycelial-like, hyaline, unbranched or vaguelybranched and flexuous appendages, which werenot swollen at their base. Cleistothecia contained2 to 7, usually 3-5, elongated ovate, slight stalk-ed asci which measured 49.3-84.1 x 34.8-60.9 mwith average of 69.6 x 40.6 m. There were 2to 6, usually 4, single cell ascospores per ascus.Ascospores were yellowish, ellipsoidal or shoesole-shaped, ranged from 26.6-46.6 x 12.3-20.7 mwith average of 33.8 x 16.2 m. The fungus wasidentified as Erysiphe heraclei DC. The conidia germinated from 20 to 32 Con 2% water agar plate with optimum temper-ature at 28 C.
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