TABLE 2 Main differences among H. ephippioides, H. fibrosa, H in A new species of Helvella (Helvellaceae, Pezizomycetes) within the H. macropus group from China

TABLE 2 Main differences among H. ephippioides, H. fibrosa, H. guttata, and H. macropus.
Characteristic featureH. ephippioidesH. fibrosaH. guttataH. macropusApotheciumCompressed-pezizoid, then saddle-shaped, 0.8–2.5 cm broad, with a free marginCupuliform, 2.3 cm broadShallowly cupulate to discoid, 1–2.5 cm broadCupuliform, 1.0–4.5 cm broadHymeniumSmooth, gray, smoky, hazel or sooty, rarely Rather dark grey-brown whiteEven, brown to dark brown, constantly mottled with patches of paler pigmentationEven, mouse-grey, grey-beige or greyish brownReceptacle surfaceSmoky or hazel and hairyConcolorous with hymenium, obviously covered by white furfuraceous scalesVillose to densely pubescent, greyish, light brown to dark brownConcolorous with hymenium or slightly paler, villose to densely pubescent, light to medium brown or grey brownStipe1.5–6 × 0.2–0.8 cm, smooth, concolorous with apothecium1.6 × 0.3 cm, solid, entirely grey-brown except at the extreme base which is pale grey, with furfuraceous surface1–6 × 0.2–0.5 cm, internally solid, villose to densely pubescent, concolorous with the receptacle surface1.2–7.0 × 0.2–1.0 cm, sometimes with a longitudinal or somewhat compressed groove at base solid, entirely grey, villous throughoutAsci250–322 × 15–19 μm240–280 × 18–23 μm200–300 × 14–22 μm210–350 × 13–19 μmParaphysesca. 2.5 μm wide, enlarged at apex4.5–8 μm wide, more or less enlarged at top, 3–4 × 7–10 μm, apex enlarged, brown containing gray pigment diffuse4–5 × 6–11 μm, progressively enlarged at apex, containing diffuse, pale gray pigmentAscosporesEllipsoid subfusiform, subacute on both sides, tri-guttulatis, 20–25 × 10 μmElliptic, containing a large central drop, (18.5) 19–20 (21.2) × 12–14 μmSubelliptic to subfusiform, uniguttulate, with large central globose to broadly ellipsoidal oil droplet, 21–27.5 × 11.5–15 μmFusiform to subfusiform, hyaline, tri- guttulate or unigutulate, warty in cotton blue, 20–25 × 10–12 μmReferencesImai 1932Van Vooren 2014This studyVan Vooren 2014, this study