. The actinomycetes. Actinomycetales. 100 THE ACTINOMYCETES, Vol. II III. Aerial mycelium light carmine to brown- ish. 1. Sporophores in verticils. a. Sporophores straight or wavy. 19. Streptomyces ne- tropsis b. Sporophores in spirals. 20. Streptomyces tendae 2. Sporophores not in verticils. a. Sporophores si raighl. 21. Streptomyces vene zuela( b. Sporophores in spirals. a1. Spirals at end of long, straight sporophores; melanin-positive. 22. Streptomyces laven - dulae b1. Spirals different; melanin-nega- tive. a'-'. Spirals closed. 23. Streptomyces vio- laceoniger b2. Spirals open. a3. Spira
. The actinomycetes. Actinomycetales. 100 THE ACTINOMYCETES, Vol. II III. Aerial mycelium light carmine to brown- ish. 1. Sporophores in verticils. a. Sporophores straight or wavy. 19. Streptomyces ne- tropsis b. Sporophores in spirals. 20. Streptomyces tendae 2. Sporophores not in verticils. a. Sporophores si raighl. 21. Streptomyces vene zuela( b. Sporophores in spirals. a1. Spirals at end of long, straight sporophores; melanin-positive. 22. Streptomyces laven - dulae b1. Spirals different; melanin-nega- tive. a'-'. Spirals closed. 23. Streptomyces vio- laceoniger b2. Spirals open. a3. Spirals regular, usually >5 turns. 21. Streptomyces fra- ilnii b3. Spirals irregular, usually <5 turns. 25. Streptomyces ery- thraeus IV. Aerial mycelium ash-gray. 1. Sporophores in verticils. 26. Streptomyces reti- culi 2. Sporophores no1 in verticils. a. Sporophores straighl or wavy. \ ^"H*. Figure 28. Sporogenous coiled hyphae of Streptomyces T 3IK); taken from a blue sector of a colony (Reproduced from: Duggar, B. M. et al. Ann. X. V. Acad. Sci. 60: 71-85, 1954).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Waksman, Selman A. (Selman Abraham), 1888-1973. Baltimore, Williams & Wilkins
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