 Description： |
Sporangiophorae non ramosae, 630-775 μm longae, 14-17 μm diametre ad basem sporangiophorae ad 8-9 μm diametre infra vesiculam terminalom; vesiculae terminales 60-65 μm altae, 45-48 μm diametre. Merosporangia plurima, non ramosa, solum una parte vesiculae sporangiophorae lata, 6 sporarum capacia. Sporae cylindricus, (5-)5.5-6(-6.5) μm longae, 2.5-3 μm diametre. Zygosporae non visae. Parasitus in Mucor. (Typus: TNM F20624 ). Vegetative hyphae hyaline, aerial hyphae growing densely on the host, 1-2 μm wide; sporangiophores simple, occasionly branching, arising from the host hyphae or from the media, growing vigorously, hyaline when young, standing singly, 14-17 μm wide at the broadest part near the base, tapering gradually to the narrowest portion 8-9 μm wide below the vesicle, 630-775 μm long; rhizoids developing well, branching, primary rhizoids horizontal, producing branches once or twice, septated; vesicles oval, 60-65 μm high, 45-48 μm wide, bearing numerous merosporangia on upper two thirds surface obliquely, the bare portion still with stertile merosporangial primordia; merosporangia unbranched, cylindrical, containing 6 spores, detached when mature leaving distinct merosporangial bases on vesicle surface; merospores cylindrical with two rounded ends, smooth, hyaline, (5-)5.5-6(-6.5) × 2.5-3 μm in size; zygospores not observed. |
| Specimens： |
TAIWAN. ILan County, Fu-shan Research Station, parasitizing Mucor sp. growing on soil collected and isolated Dec. 2003 by H.-M. Ho, S121102, dry culture deposited in the National Museum of Natural Science, Taichung, Taiwan (TNM F20624). A living culture deposited in Food Industry Research and Development Institute (BCRC 34165). Other isolates examined: PLS0203, Taiwan, Taipei County, Shrding Shiang, Wenshan Botanical Garden, from soil, collected by H,-M, Ho, isolated by S.-C. Chuang, Oct. 2006; MLS1302, Taiwan, Miaoli County, Gongguan Shiang, from soil, collected by H.-M, Ho, isolated by S.-C. Chuang, Nov. 2006；LHZ3402, Taiwan, Nantou County, Lienhuachin Research Center, from soil, collected by H.-M. Ho, isolated by S.-C. Chuang, Dec. 2006. |
| Note： |
The distinct feature of S. obliqua is the placement of the merosporangia on the vesicle. In this genus, only two described species are similar: S. plumigaleata Embree and S. fuscata Indoh (Embree, 1965; Indoh, 1962). S. plumigaleata (Embree, 1965) differs in having larger, oval spores (6.5-10 × 3.5-4.5 μm) and in producing minutely punctate ornamentation on the spore surface where S. fuscata (Indoh, 1962) forms 4 to 6 cylindrical spores with somewhat rounded ends which are smaller (6-7.5 × 3 μm) with a refractile body at each end of the spore and ornamented with a few scattered, irregular thickenings. Indoh (1962) only observed and illustrated merosporangial formation on the upper 50% of the fertile vesicle. Later, however, Kuzuha (1973) reported that merosporangial formation also could occur unilaterally, and that the spores were cylindrical to oval, smooth-walled and they were longer than as originally cited (3.5-9.5 × 2-3.5 μm). The characteristics that clearly differentiate S. fuscata and S. obliqua are the shape, ornamentation, and size of the spores. On this basis S. obliqua is distinct from S. fuscata sensu Kuzuha (1973) and is described as new. |
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Phylum：Zygomycota >> Class： Zygomycetes >> Order： Zoopagales