Observation 322452: Alternaria Nees

Notes:
Growing on the eggs of a hemipteran, likely Halyomorpha halys. Conidia brown, catenulate multi-celled dictyospores. Conidia measurements from Piximetre: (23.7) 25 – 37.9 (46.4) × (8.3) 9.6 – 11.9 (12.4) µm, Q = 2.3 – 3.6 (4.8); N = 23, Me = 31.4 × 10.7 µm; Qe = 3
Individual conidia: 36.78 × 11.92 µm, 32.62 × 10.37 µm, 30.94 × 11.02 µm, 27.96 × 9.88 µm, 26.80 × 11.77 µm, 33.93 × 9.32 µm, 27.64 × 11.34 µm, 32.10 × 12.40 µm, 32.22 × 11.47 µm, 38.98 × 12.42 µm, 33.03 × 10.86 µm, 32.67 × 8.32 µm, 31.01 × 10.04 µm, 24.31 × 10.75 µm, 29.84 × 10.35 µm, 33.19 × 10.59 µm, 30.55 × 10.22 µm, 24.99 × 9.68 µm, 28.94 × 10.96 µm, 23.68 × 10.38 µm, 26.05 × 10.04 µm, 46.42 × 9.64 µm, 37.88 × 11.36 µm

Species Lists

Images

2018-07-08-22.58.29 ZS PMax edit crop 2.jpg
20180707_122819 edit.jpg
2018-07-09-00.16.32 ZS PMax edit.jpg
40x
DSC_1420 Conidia at 400x in NH4OH (2 drops), phloxine (1 drop) and congo red (1 drop).JPG
DSC_1430 Conidia at 400x in NH4OH (2 drops), phloxine (1 drop) and congo red (1 drop).JPG

Proposed Names

57% (1)
Used references: Barnett, J. Hunter. B.(1998) Illustrated Genera of Imperfect Fungi. Aps Press, 1, 32-80.

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= Observer’s choice
= Current consensus

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Created: 2018-07-09 08:56:34 CDT (-0500)
Last modified: 2018-07-20 21:03:21 CDT (-0500)
Viewed: 38 times, last viewed: 2019-05-04 19:49:58 CDT (-0500)
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