116 MEDICAL MYCOLOGY 



ameter. Columella 45-51 x 31-41ju. Spores round, sometimes slightly an^lar, 

 smooth, 4/A. Chlamydospores eitriform, 30 x 25 or 40 x 26/a, or spherical, 20^16 in 

 diameter, forming ordinarily on the mycelium. Zygospores unknown. 



Var. annamensis, P. N. Bernard, Bull. Soc. Myc. France 30: 230-232, PI. 

 14, 1914; Bull. Soc. Path. Exot. 7: 430, 1914. 



Isolated from sputum of an Annamite, aged thirty-two, 32 in 1911; 

 sputum blackish, as if mixed with carbon grains. Cough with a little dyspnea. 

 Whole left lung infected. No previous history except bronchitis, with com- 

 plete recovery. Hospitalized for cough in fall, 1910, worse July, 1911, but 

 alive in December, disease seemingly arrested and localized. Intravenous 

 inoculations in pigeons, no effect ; nor intraperitoneal, in guinea pig ; rabbit 

 succumbed by both methods, but not by subcutaneous inoculation. Organ- 

 ism recovered. 



Isolated sporangiophores without rhizoids 72-450'/a x 8-12/^ usually 150 x 

 12/x. Sporangiophores in pairs near each other, pedicels short 78-210 x 8 

 - 12/A, 30-45/x between pedicels, without rhizoids. Sporangiophores with rhi- 

 zoids singly or in pairs, the latter 138-144 x 8-9/a, occasionally pedicels up 

 to 420-780/i long. Sporangia oblate spheroid, 48-84/a. Columella 18-48|U high 

 X 24-52/i broad. Cutinization from pedicels to rhizoids and stolons, less ac- 

 centuated on the columella. No collar after sporangial dehiscence. Inter- 

 calary chlamydospores 36 x 24/* eitriform ; or spherical 30-42/* in diameter ; 

 ovoid 60 x 48-42 x 30/t, numerous even in aerial portions. Spores round, 

 smooth, 4/t, not cutinized. 



Growth good on Sabouraud agar for several months, then suddenly stopped 

 fruiting on carrot and potato glucose; optimum 37-39° C, tube filled with 

 mycelium in 3-4 days; sporangia in 5 days; no growth at 5° C. ; killed at 100° 

 moist heat in 15-20 minutes. 



Rhizopus niger (Ciaglinski & Hewelke) Barthelat, Mucorinees patho- 

 genes et les Mucormycoses 55, 56, 1903; Arch, de Parasitol. 7: 46, 47, 1903. 



Miicor niger Ciaglinski & Hewelke, Zeitschr. Klin. Med. 22: 626, 1893. 



Isolated in cases of black tongue ; not pathogenic for guinea pigs or rab- 

 bits. Also found later by Sendziak (1894). 



Stolons provided with numerous rhizoids, forming a snow-white layer. 

 Sporangiophores erect, straight, fasciculate, terminated by spherical sporangia, 

 which become black at maturity. Columella at first cylindric 2-3 times as 

 long as wide, later enlarging and becoming hemispheric ; after the dehiscence 

 of the sporangium assuming the appearance of an open umbrella. Spores 

 oval, smooth, gray, black in mass. Growth good on potato and in bread 

 gelatin, optimum 25-27° C, growth ceases at 37° C. 



Rhizopus parasiticus (Lucet & Costantin) Lendner, Mat. Fl. Cryptog. 

 Suisse 3: 115, 1908. 



Bhizomucor parasiticus Lucet & Costantin, Rev. Gen. Bot. 12: 81, PI. 3, 

 1900; Arch, de Parasitol. 4: 384-408, 1901. [See p. 394.] 



