Pleosporales, Luttrell ex M.E.Barr, 1987

Mlčoch, Patrik & Matušinsky, Pavel, 2024, Phylogenetic and morphological revision sexual stages of the genus Paraphoma (Phaeosphaeriaceae) and next related species from clade of Ophiobolus-like (Phaeosphaeriaceae), Phytotaxa 663 (4), pp. 184-204 : 197-198

Key for determination of phragmosporous species of Pleosporales associated with dead stems of Lupinus ssp. ( Fabaceae )

This dichotomous key is literature research usually original descriptions of phragmosporus taxa, which are associated with dead herbal stems of Lupinus ssp. ( Mlčoch 2021; Shoemaker 1984; Greene et al 1901). In this key are mainly taxa, which belong to the valid concept of the genus Leptosphaeria s. l. Majority this species needs phylogenetic revision.

1. ascospores 3-septate ...........................................................................................................................................................................2

1. ascospores more than 3-septate ..........................................................................................................................................................3

2. asci 80–90 × 11–13 μm, ascospores 26–35 × 4.5–6.5 μm, second cell of ascospore enlarged, spores yellowish brown .................... ................................................................................................................................... Leptosphaeria byssincola Earle ex Shoemaker

2. asci 80 × 8 μm, ascospores 25–30 × 4 μm, cell of spore not enlarged, spores light olivaceous ........ Leptosphaeria lupinicola Earle

3. ascospores 4-septate, second cell of ascospore enlarged, 36–44 × 4.5–5.5 μm ....................... Leptosphaeria shastensis Shoemaker

3. ascospores 6 to 7-septate ....................................................................................................................................................................4

4. cells of ascomal wall 10–13 × 9–11 μm, asci 130–150 × 10–12 μm, ascospores 6-septate, biseriate in asci, 42–48 × 4.5–5.5 μm ... ................................................................................................................................................. Leptosphaeria wehmeyeri Shoemaker

4. cells of ascomal wall under 9 μm on the weight, asci less than 120 μm on the length, ascospores rare only biseriate in asci, 6 to 7-septate..............................................................................................................................................................................................5

5. cells of ascomal wall 7–10 × 5–7.5 μm, asci 80–110 × 8–12 μm (if are bi to triseriate) /20–24 μm (if are tetraseriate), ascospores wider, (40)45–60 × (5)6–7 μm ............................................................................ Chaetosphaeronema barriae (Shoemaker) Mlčoch

5. cells of ascomal wall 8–12 × 6–8 μm, asci 12–16 μm on the weight, ascospores less than 40 μm, 34–40 × 5–6 μm......................... ................................................................................................................................................... Leptosphaeria castrensis Shoemaker