Mycological Bulletin No. 50

Mycological Society of America

Mycological Bulletin No. 50Author(s): W. A. KellermanSource: Mycological Bulletin, Vol. 4, No. 50 (Jan. 15, 1906), pp. 197-200Published by: Mycological Society of AmericaStable URL: http://www.jstor.org/stable/20521060 .

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Mycological Bulletin No. 50

TF. A. Kellernzant, Ph. D., O:.io Stcte U7i:iversity Colutmbus, Olio, January 15, 1906.

THF. ILLUTRATTONS PR-SENTED. Tl-Te first and last illustrations in this Number are very commoni fungi-thle first a Cor-ti-na'-ri-ts and the last a Ily-groph'-o-rts. It munst be admitted, however, that the species of these two genera are. not readily determinable by the beginner-in fact oill'r specialists comprelheiid the situation. The illutstration on the third is ouit of the ordinarv for this Leaflet. Bult it is so conspicuous alnd this

FiG. 1ii6-COR-TI-NA -RI-US CIN-NA-MO'-ME-US.-A very dark colored common Cor ti-na'-ri-us (this genus his an arachnoid, i. e. a cabwebby veil) which was collected by Supt. Al. 1x. liard anid the writer in the woods niear Chillicothe, O., Oct. 30, 1905).

University Bulletin, Series 9, No. 38. Entered as Second Class Matter, Post-office at Columbus, Ohio



198 Mvlcological Bullletini No. ;-)o [Vol. IV

parasitic ftingus is so coniiuinon that it can lnot be neglected by the wide awake amateulr or the beginner. It is the first of the three stages in the life-cycle of a Black Rtst. The second and third stages of this species are fouind (associated) oni a Sedge, or Slough Grass (Carex). See ex planation under figures.

"QUOTATION PAGE." (Quotation1 continued fromt Page 194).

"These specimelns resembled the herbarium specimens of those para sitic on C. atramentarius (as identified by McKenna), but with some vari ation-s. They are considerably larger, but the greater size is only propor tional to the greater size of C. comatus as compared with C. atramentarius.

The pileus in one specimen is 3.5' broad. Here and there portions of the veil adhere to the pileus, forming a fringe on the young cap. The surface of the cap is roughened by reticulate umber colored areas, especially at the

margini, which latter become elevated anid flaky, breaking up into recurved umber patches. The stipe is cylindrical 1.5' long by 5" in diameter in the largest specimen. The spores varv in size from .0003'-.0004' by .0002' .00029'.

"Ihe hypertrophied host resembles that described by McKenna, but is larger, becoming; from 2 to 3 inches in. diameter by 2 inches high. It forms a cup-shaped or ctushion-like mass with swollen edges and a deep indenta tion at the top. Sometimes a single large carpophore arises from the cen ter of this indenLtation. In other cases two or more are present in variouis stages of development. The mass of the host is scarcely distingu'ishable as stipe and piletis. It is merely- narrowed below and is connected di rectly with thick mycelial strands ramifying in the substratum. The outEide is striate and covered with brownish fibres, especially that portion which corresponds to the pileus. The thickened edges of the hypertrophied host were examined, and althouglh the gills, basidia and sterigmata could be distinctly made ot, the fulnguis was apparently niot sufficiently mat.red to produce spores.

"The reasonis for believing the host in this case to be Coprinus coma tus are as follows: Trhe futingi in oquestion are accompallied by growtlhs of C. comaids only, and the host resembles closely the form Aden,tified from its spores as C. atramenitariuis by McKenna, but is as mucll larger thani that form as Coprintus comatuis is larger thain Coprilius atramen tarius.

"So called abortive forms verv similar to these parasitized Coprini have beetn described for Clitopilus prunuluts Scop, Clitopilus abortivtus B. & C. and Armillaria mellea Vahl, but the cause of these formations is still unexplained. Clitopilus prunuluis produces aborted forms singly or in tufts. They ale very variable in shape and are white tinged with brown on ruptuired sturfaces.

"Peck in describirg the aborted forms of Clitopilus abortivus B. & C. says thev are irregullar or sub-globose fleshy white masses occlurring in company with normal fornms and apparently under the same conditions of soni, moistuire and temper'ttire. These forms are common here alnd are follnd in various stages of development. Some slhow markced character istics of the normal form of C. abortivus, while others are hypertrophied an(l contorted into masses resembling closely the forms described above for the Coprini. 'They are smaller, however, the largest niot being over 1-1'/2 in diameter The gills show plainly on sectioning.

"The abortive forms of Arnlillaria mellea Vahl are also common in this region are very similar to those of the two Clitopili just men tioned. Peck states in his description of this from that the masses are

of cellular matter without any distinction of stem, pileus or lamellae. 'Without positive proof,' Mcllvaine says, 'no one would suspect either of these odd formations to be abortive of either Clitopiltus abortivtus or Ar

millaria mellea or any other fungus.' In view of other resemblances to the parasitized Coprini described above, it is qtlite possible that these mon strosities are duie also to the presence of some parasitic agaric which for some reason is uinable to produce carpophores." [Helen Sherman, Jouirnal of Mycology.]



15 Jan. 1906.] llylcological Bulletin No. 50 199

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0 0' 0

FiG. 157.---YEI.LOW CLUSTER-CUPS, or the Ae-cid -i-tnm that grows on- the Elder and disto-ts the hranchlets an(d leaves. At b a ripe "cup" is shoxv71; onie of the germinat ing spores mor-e highly magnifiecd is filiredl .it c.



200 Mycological Bulletinl No. La [Vol. IV

FIG. 158.-HY-GRoPII'-o-RUS E-BUR'-NE-us.---A comimon white Hy-groph'-o-rus, cc

.~ ~ ~ ~~~~~~~~~~~~ . deurI-t

curring in Europe and America. Thle gills in this specics are stronl decrrnt and Atkinson says of the gills of all the species Of this genus that "teyare usually rather d istan t, thLe edge is acute or shiarp), anid gradually thiickened toward the junc tion with the cap, so that a scction of the gill is more or less trianigular." The half tone was mnade irom specimiens collected by Supt. Hard and the writer at Chiillicothe,

Ohio, in woods by Pzint Creeck, Oct. 30, 1905.

The Mycological Bulletin ia issued on the I1st and 15th of each Month, Price 25c. Copies of Voil. 11 (1904) and Vol. III i1905) may be had for 50 cents each, or cloth bound copies for 75 cents. No copies remain of Vol.1I 1903 , Address. W. A. Kellerman Columbus Ohio.



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Mycological Bulletin No. 50