(Zur Kenntniss kleinster Lebensformen, Bern, 1852, 174.)
weis′se.i. Named for J. F. Weisse, a zoologist; M.L. gen. noun weissei of Weisse.
Cells 4.2 by 5.7 to 11.5 microns (Perty); also 3 to 4 by 7 to 9 microns (Issatchenko, Borodin Jubilee Volume, 1929?, 8); transitions to Chromatium okenii (Winogradsky, Schwefelbacterien, Leipzig, 1888, 92); transitions to Chromatium minus (Strzeszewski, Bull. Acad. Sci., Cracovie, Ser. B, 1913, 321).
Illustrations: Winogradsky, op. cit., 1888, Pl. IV, fig. 1-2, Miyoshi, Jour. Coll. Sci., Imp. Univ. Tokyo, Japan, 10, 1897, Pl. XIV, fig. 15.
6. Chromatium cuculliferum Gicklhorn, 1920. (Cent, f . Bakt., II Abt., 50, 1920, 419.)
cu.cul.li′fe.rum. L. noun cucullus hood, cap; L. v. fero to bear; M.L. adj. cucullifer cap-bearing.
Cells 4 by 6 to 8 microns (Gicklhorn); according to Bavendamm (Schwefelbakterien, Jena, 1924, 127), identical with Chromatium warmingii forma minus. Gicklhorn claims this organism to be colorless, which appears very doubtful.
Source: From the pond in the Annen Castle Park, Graz, Austria.
Habitat: Fresh-water ponds.
Illustration: Gicklhorn, op. cit., 1920, 419, fig. 2.
7. Chromatium minus Winogradsky, 1888. (Schwefelbacterien, Leipzig, 1888, 99.)
mi′nus. L. comp. adj. minor (neut. minus) less, smaller.
Cells 3 by 3.5 to 7 microns (Winogradsky); also 1.7 to 3 microns in width and up to 8.5 microns in length (Issatchenko, Borodin Jubilee Volume, 1929?, 9); all transitions to Chromatium weissei from which it cannot be distinguished (Strzeszewski, Bull. Acad. Sci., Cracovie, Sér. B, 1913, 321).
Illustrations: Winogradsky, op. cit., 1888, Pl. IV, fig. 5; Miyoshi, Jour. Coll. Sci., Imp. Univ., Tokyo, Japan, 10, 1897, PI. XIV, fig. 16; Issatchenko, Recherches sur les microbes de l'océan glacial arctique, Petrograd, 1914, Pl. II, fig. 10-11.
8. Chromatium vinosum (Ehrenberg, 1838). Winogradsky, 1888. (Monas vinosa Ehrenberg, Die Infusionstierchen, Leipzig, 1838, 11; Winogradsky, Schwefelbacterien, Leipzig, 1888, 99.)
vi.no′sum. L. adj. vinosus full of wine.
Cells 2 by 2.5 to 5 microns; also 1.4 to 3 by 1.5 to 5 microns (Jimbo, Botan. Magaz. Tokyo, 51, 1937, 872); 1.7 to 2 by 2 to 9 microns (Issatchenko, Borodin Jubilee Volume, 1929?, 9); or 1 to 1.3 microns by 2.5 to 3 microns (Schrammeck, Beitr. Biol. d. Pflanzen, 22, 1935, 317). Jimbo considers Thioderma roseum Miyoshi to be identical with Chromatium vinosum.
Illustrations: Winogradsky, op. cit., 1888, Pl. IV, 6-7; Miyoshi, Jour. Coll. Sci., Imp. Univ. Tokyo, Japan, 10, 1897, Pl. XIV, fig. 17; Nadson, Bull. Jard. Imp. Botan., St. Pétersbourg, 12, 1912, Pl. III, fig. 1-2.
9. Chromatium violaceum Perty, 1852. (Zur Kenntniss kleinster Lebensformen, Bern, 1852, 174.)
vi.o.la′ce.um. L. adj. violaceus violet-colored.
Cells about 2 by 2 to 3 microns. According to Cohn (Beitr. Biol. Pfl., 1, Heft 3, 1875, 166), probably identical with Chromatium vinosum. Apparently includes various sizes.
10. Chromatium molischii (Bersa, 1926) van Niel, 1948. (Pseudomonas molischii Bersa, Planta, 2, 1926, 375; van Niel, in Manual, 6th ed., 1948, 858.)
mo.li′schi.i. Named for H. Molisch, an Austrian botanist; M.L. gen. noun molischii of Molisch.
Cells about 2 by 2.5 to 8 microns. Supposedly contain calcium carbonate as inclusions.
Illustration: Bersa, op. cit., 1926, 376, fig. 3.
11. Chromatium gracile Strzeszewski, 1913. (Bull. Acad. Sci., Cracovie, Sér. B, 1913, 321.)
gra′ci.le. L. adj. gracilis thin, slender.
Cells 1 to 1.3 by 2 to 6 microns; also to 1.5 microns in width (Issatchenko, Etudes microbiologiques des Lacs de Boue, Leningrad, 1927, 114).
Illustration: Strzeszewski, op. cit., 1913,
