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 Add this item to the list  irregularly cupulate
   
Literature:
 
Page number:56 
Remarks (internal):Abbott & Currah (1988, 1997) described H. robusta with apothecium that is irregularly cupulate or centrally depressed with reflexed margins; in addition to this type, we observed an irregularly bi-lobed apothecium covering the stipe, with the apothecial edges curved towards the stipe, thus fully exposing the hymenium. The peculiar shape of the ascoma makes H. robusta easy to recognize, although Abbott & Currah (1988) noted that it could be confused with some species of section Acetabulum, although members of that section have a well-defined cup-shaped apothecium in all stages of development. In addition to its peculiar apothecial shape, H. robusta has a strong reddish reaction in the apothecial medullary excipulum and stipe inner layer and moderately reddish reaction in the stipe outer layer in Melzer’s. 
Description type:Non-original description 
Description:Helvella robusta S.P. Abbott, in Abbott & Currah, Mycotaxon 33: 242, 1988 Figs 10b, 33
Type: Canada: Calgary, Nose Hill area, 30 Aug 1972, R.M. Danielson 459 (Holotype DAOM-143869).
Apothecium irregularly cupulate with a large central depression to irregularly bi-lobed, margin free, covering the stipe; sterile surface subpubescent to pubescent, ribbed, ribs sharp. Stipe gradually expanding toward the apothecium, lacunose, ribs sharp, subpubescent to pubescent. Paraphyses hyaline to light brown, pigment deposits in cell walls. Medullary excipulum hyaline. Ectal excipulum light brown, pigment deposits in cell walls. Stipe inner layer hyaline. Stipe outer layer light brown, pigment deposits in cell walls. Apothecial hyphal fascicles 38-80 µm long, hyaline to light brown, pigment deposits in cell walls; stipe hyphal fascicles 40-90 µm long, hyaline to light brown, pigment deposits in cell walls. The brown pigment of the paraphyses, ectal excipulum, apothecial hyphal fascicles, and stipe outer layer is not visible in cotton blue or Melzer’s. Medullary excipulum and stipe inner and outer layers rr+; ectal excipulum rr-
 
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