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Page number:520 
Remarks (internal):The nutrient deficiency responsible for the sparse growth of A. variecolor var. astellatus on Czapek's solution agar can be partially corrected by replacing sucrose with glucose as a carbon source. The substitution of ammonium nitrate for sodium nitrate as a nitrogen source leads to increased production of conidial structures.
Two strains typifying the variety have been examined; both were sent to us by Professor G. W. Martin, University of Iowa. The first of these, WB 2396, was received in March 1946 as strain No. 6273 isolated from leaves (Ilex sp.?) collected on Baltra (South Seymour) Island, Galapagos; the second, WB 2397, was received in June 1948 as strain No. 6368, isolated on South Seymour Island, Galapagos, from a dead leaf.
Description type:Non-original description 
Description:Aspergillus variecolor var. astellatus Fennell and Raper, in Mycologia 47: 81-82, Fig. 5 (1955).
Ascosporic stage reported also as
Emericella variecolor var. astellata (Fennell and Raper) Benjamin, in Mycologia 47(5): 679 (1955).
This variety differs primarily from the species A. variecolor by producing ascospores with very wide but entire rather than stellate equatorial crests (Fig. 115B). As in the species, cleistothecia are typically borne on pseudo stalks consisting of mounds of globose hülle cells and interwoven mycelium. Growth on Czapek's solution agar is very sparse with vegetative mycelium largely submerged. Colonies on malt extract agar, and on Czapek's solution agar enriched with 1 per cent steep liquor, grow more luxuriantly and produce cleistothecia in much greater abundance.
Conidial structures and cleistothecia of the variety duplicate those of the species; asci measure 10 to 13 µm by 14 to 18 µm and appear conspicuoulsy lobed during maturation (Fig. 115A); ascospores are larger than those of the species, with spore bodies measuring 5.5 to 6.0 µm and with completely undissected crests up to 2.8 µm wide.
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