Atractogloea stillata

Atractogloea stillata Oberw. & Bandoni 1982, in Oberwinkler & Bandoni, Mycologia, 74(4), 634-639 (1982)

Diagnosis: Basidiocarps soft-gelatinous, sessile, pulvinate (Figure 1, 2), mostly around I mm in diam, some slightly elongate and reaching 1.5 mm in the longest dimension. Hyphae (1.5-)2-3(-5) µm in diam, hyaline, slightly gelatinized but distinct, clamped (Figure 3, 5, 6), two or three clamps frequently closely associated and anastomosed; branches typically arising from clamps. Basidia terminal, long-cylindric, 3.5-4.5(-6) x 40-105 µm, becoming transversely 3-septate (Figure 3, 4). Basidiospores (Figure 3, 4) produced blastogenously, sessile, passively released when mature, 3-4 x (4-)5-8 µm, the walls thin, smooth, hyaline, non-amyloid, germinating by budding, the buds often developing while spores are still attached to the basidium.

Index Fungorum Number: IF110497

Figure 1-4. Atractogloea stillata. 1. Habit sketch of basidiocarps on spathe of Phoenix canariensis. 2. Sectional view of basidiocarp showing arrangement of hyphae. 3. Hyphae of subhymenium and hymenium with basidia in different developmental stages. Note clustered clamps (arrows), large medallion clamp (double arrow), hypha (anastomoses, and paired buds at single budding locus (asterisk). 4. Upper portions of mature basidia; developing and released basidiospores. Note germination by budding of spore on lower right.