PENICILLIUM DBCUMBENS. 



71 



colonics with red i olorin medium. Potato plugs, tj pical, reverse of colony and potato 

 both deep red. Raulin's fluid, good growth, bul uo color in fluid. < John's solution. 

 germination only. 



Synthetic fluid (Dox'e , carbon supplied as: Cane sugar 3 per cent, good growth, but 

 no red color. Lactose 3 per cent, very little growth. Lactic acid 9 per cent, little 

 growth. Levulose 3 per cent, little growth. Galactose 3 per cent, little growth. 

 Glycerin 3 per cent, germinated only, grew when sugar was added. Potato starch 3 

 percent, good colonics, bu1 no red color. Butterfat, rai her small colonies with many 

 delicate coremia, reverse of colonies red, with uo color in fluid. 



Milk, good growth with scattered coremia in old culture-; curdling (0.25 per cent 

 calcium chlorid added) very Blow about I weeks; digestion slow or slight, no clear 

 fluid; color in milk, colony deep red below, milk deep red I \ Inosus) at top, shading to 

 white below, very slowly colored. 



Grew about equally well at 37° C. and 20° C. 



PENICILLIUM DECUMBENS n. sp. 



Latin diagnosis. — Coloniis in gelatina pura vel agaro Solani tuberosi aut phaseoli 

 cultis, i:risco-glaucis,grisei8, demunbrunneolis-sparsis; in saccharo ofbeinaro commixto 

 denrior, glaucescentihus; parte aeria ex 

 hyphis decumbentibus vel stoloniformibus 

 conidiophoros brevissimos gerentibus, 

 denum csespitulis albis densis hypharum 

 sterilium Becundariarum, conspersis ; re- 

 verso incolorato; conidiophoris 20-100X3,u, 

 basidiis 7-9X2-3/1, in uno verticillo denso 

 gerentibus; fructibus conidicis ex catenis 

 conidiorum primum in columno usque 100/t 

 longo, mox, incapituloconglutinato solutis; 

 conidiis globosie, 2.5-3/(, vacuolatis, lsevi- 

 bus, primum pallide glaueis demum brun- 

 neolis; coloniis gelatinam non liquefa cien- 

 tibus, alkalinis lacmo, saccharophilis, 

 odorem in saccharo evolventibus. 



Communicavit, Prof. P. II. Polls, Miami, 

 Fla., 1905. 



( lultivated in gelatin or potato agar, white 

 to gray, gray-green ultimately yellowish 

 brown, green in cultures with cane sugar, 

 surface growth consisting of trailing or stolon- 

 like hyplue sparseh de\ eloped and so close 



to the Bubstratum as to appear only as fer- 

 tile hyphse, hearing the conidiophores as 

 short branches 20-100/t in length, in old 

 colonies with dense tufts of sterile second- 

 ary mycelium scattered upon the surface; 

 conidial fructifications consisting of single 

 verticils of crowded conidiiferoue colls, 



7-9 by 2 3/i, bearing conidial chains firsl in loose columns up to LOO/u in length bul soon 

 becoming enveloped and broken up in the drops of fluid secreted abundantly from the 

 mycelium (Gliocladmin-like) ; conidia globose 2.5 :;», vacuolate, Bmooth, pale green 

 then brownish in mass; colonies do not liquefy gelatin; give a weakly alkaline reac- 

 tion to litmus; produce a definite odor in cultures containing cane sugar. 

 Contributed by Prof. P. II. Rolfs from Miami, Fla., 1905. 



! 1 1, . .'-. PeniciUium decumbent: a, b,c,d, conidial 

 fructification, a single verticil >>f conldllferona 

 cells i ■ 900); ftJ.Jt, sketches of conidial fructifi- 

 cations, wiih diagram ol habit and appearance 

 of young culture on potato-agar (X 140). 



