In form (b), the structure is similar but by no means so symmetrical and complete. The calyx often fails, or is present by obscure indications only. The cancellation is coarser, the number of ribs fewer, the whole sporangium more or less globose; ferruginous or purple, the prevailing tint. Figs. on Pl. 1. are from the ferruginous type. Figure 3 represents a beautiful thing; cup-less, ellipsoidal, delicate, of average size and in every way well-proportioned, clear rosy brown in color. This may stand for a third variety; (c) _D. cancellatum prolatum_. Common everywhere. The fruit appears in June on decaying logs and stumps of various species of deciduous trees, conifers, etc., the finest, and greatest variety, are from southern Missouri. ORDER IV =LYCOGALALES= Fructification aethalioid; peridium membranaceous, tough, simple, without vesiculose with protoplasmic masses, within gelatinous; the capillitium of cortical origin, consisting of irregular lobate or branching tubules, varying much in width, and marked by numerous corrugations, irregular warts or bands; spores minute, ashen or pallid. This order includes but a single genus,-- =Lycogala= _Micheli._ 1729. _Lycogala_ Micheli, _Nov. Plant. Gen._, pp. 216, 217. 1753. _Lycoperdon_ Linn. _Syst. Nat._, in part. 1794. _Lycogala_ Persoon, Roemer, _N. Bot. Mag._, p. 87. Micheli's description and figures, _Nov. Plant. Gen._, pp. 216, 217, Tab. 95, leave no doubt but that this illustrious man had species of _Lycogala_ before him when he described the genus. His figure 1. no doubt portrays the second species in our present list. More recent writers, from Persoon down, have used Micheli's designation, but differed in regard to the limits to which the name should be applied. It is here used substantially as in 1729. Fries and, after him, Rostafinski make a mistake in quoting Retzius as writing _Lycogala_ (1769). Retzius wrote _Lycoperdon sessile; Kongl. Vetenskaps Acad. Handling, foer Ar._ 1769, p. 254. =Key to the Species of Lycogala= _A._ Aethalia irregularly globose. _a._ Cortex minutely roughened or warted; about 12 mm. in diameter 1. _L. epidendrum_ _b._ Cortex smooth, size large 2. _L. flavo-fuscum_ _c._ Cortex rough; diameter 6 mm. or less 3. _L. exiguum_ _B._ Aethalia conical 4. _L. conicum_ 1. LYCOGALA EPIDENDRUM (_Buxb._) _Fries._ 1721. _Lycoperdon epidendron_, etc., Buxb., _En. Pl. Hal._, p. 203. 1753. _Lycoperdon epidendrum_ Linn., _Sp. Pl._, p. 1184. 1829. _Lycogala epidendrum_ (Buxb.) Fries, _Syst. Myc._ III., p. 80.