164 SYNOPSIS OF THE FLORA OF COLORADO. 



slender, firm, fibrous, stuffed, equal, concolorous. Plant very variable, 

 1-6 inches high ; pileus .5-2 inches broad. Twin-Lake Creek, August. 



AG-ARICUS YELTJTIPES, Curt. Caespitose ; pileus fleshy, thin on the 

 margin, convex, smooth, very viscid, dull yellow with a brownish disk 

 or bright reddish-yellow ; lamella close, rounded behind, slightly at- 

 tached, yellowish ; stem equal or slightly tapering upward, hollow or 

 stuffed, generally velvety and brown, sometimes pale yellow and prim- 

 rose. Plant 1-2 inches high 5 pileus 5-1.5 broad. Twin-Lake Creek, 

 August. 



AGARICUS ILLICITUS, Peck. Pileus fleshy, firm, broadly convex or 

 expanded, smooth, hygrophanous, very dark brown when moist, paler 

 when dry ; lamell* close, broad, tapering outwardly, plane or ventricose, 

 rounded behind, with a very slight decurrent tooth, pale dingy brown ; 

 stem firm, equal, hollow, scabrous, distinctly striate at the top, paler 

 than the pileus. Plant 1.5-2 inches high ; pileus 1-1.5 inches broad. 

 Twin-Lake Creek, August. 



* AGARICUS. 1 Twin-Lake Creek, August. 



*LACTARIUS ? Twin-Lake Creek, August. 



LENZITES SEPIARIA, Fr. Pileus coriaceous, tough, dimidiate, often 

 elongated, zoned, strigose-tomentose, brown, generally paler or yellow- 

 ish on the margin ; lamellae rather thick, slightly branched or anas- 

 tomosing, yellowish, inclining to brown. 



Yar. ft. POROSA. Lamellae abundantly anastomosing and forming 

 pores. Mount of the Holy Cross and Twin-Lake Creek, August. 



DACRYMYCES STILLATUS, STees. Subrotund, convex, often plicate, 

 yellow or orange, color persistent ; spores multiseptate. White House 

 Mountain, August. 



PUCCINIA PORTERI, Peck. (n. sp.) Spots none; sori aniphigeuous, 

 crowded or scattered, rotund, rather small, prominent, brown ; spores 

 oblong or obovate-oblong, constricted in the middle, about .0016 inch 

 long, .0007-.0009 inch broad ; peduncles hyaline, one-half to twice the 

 length of the spore. On leaves of Veronica alpina. Twin Lakes, July. 

 The sori, which are about .018 inch in diameter, occupy the whole under 

 surface of the leaf, being so closely placed as to appear almost confluent. 

 In some instances they appear suffused by a cinereous hue, due, perhaps, 

 to the germination of the spores. The sori on the upper surface of the 

 leaves are scattered and comparatively few. The species seems to be 

 related to P. brunnea, Billings, from which it may be separated by its 

 amphigenous habit and hyaline peduncles. Dedicated by its discoverer, 

 John M. Coulter, to Prof. T. 0. Porter. 



PEZIZA VULCANALIS, Peck. Hay deli's 6th Arm. Rep., 1872. Cup fleshy, 

 funnel-form, stipitate, crenate on the margin, smooth when fresh, rugu- 

 lose and more or less brown when dry; hymeuium pale orange; stem 

 slender, solid, smooth, brown ; asci cylindrical ; paraphyses slightly thick- 

 ened at the tips ; spores elliptical, smooth, 0.0004-0.0006 inch long, 0.0003 

 inch broad. Plant, 6-10 lines high ; cup 4-6 lines broad. Ground. 

 Twin-Lake Creek, August. 



PEZIZA SCUTELLATA, L. Cups scattered or gregarious, sessile, shal- 

 low or plane, vermillion, externally paler and hispid, with straight brown 

 or black hairs; asci cylindrical; paraphyses clavate at the tips; spores 

 elliptical, .0008 inch long. Plant usually about one-fourth of an inch in 

 diameter, the hymenium fading in drying. Twin-Lake Creek, August. 



'Not in determinable condition. 



