1038 



MANUAL OF DETERMINATIVE BACTERIOLOGY 



(1873, loc. cit.) PI. 4, Fig. 16. Kalch- 

 brenner and Cooke (loc. cit.). Thaxter 

 (1892, loc. cit.) PI. 23 and 24, Figs. 12-19 

 and 25-28. Zukal (loc. cit.) PI. 20. 

 Quehl {loc. cit.) PI. 1, Fig. 10. Jahn, 

 Beitrage zur botanischen Protistologie, 

 I. Die Polyangiden, Geb. Borntraeger, 

 Leipzig, 1924, Fig. V, p. 57, Fig. W, p. 59. 

 Krzemieniewski (1926, loc. cit.), PI. V, 

 Figs. 57-60; (1927) var. frutescens PI. 

 VI, Figs. 27-35. 



3. Chondromyces cylindricus Krze- 

 mieniewski. (Acta Soc. Bot. Pol., 7, 1930, 

 260.) 



Etymology : Greek kylindrikos, cylin- 

 drical. 



This organism was at first thought to 

 be a variety of Chondrovnjces aurantiacus. 

 It is separated from it on the basis of 

 size, shape and pigmentation of the cysts. 



Fruiting body : Cystophore composed 

 of bundles of cells, develops from a thick, 

 greenish-j'^ellow mass of rods ; unbranched 

 or with short branches, colorless to pale 

 orange-yellow; up to 200 microns high. 

 Numerous cysts develop from cystophore 

 and branches; at first borne on slender 

 stipe 20 microns long, later becoming 

 sessile on cystophore. Young cysts 

 orange-yellow, later becoming deeper 

 orange, and finally bright orange-brown 

 w^hen ripe. Shape variable: oval, ir- 

 regularly rounded; predominantly cylin- 

 drical with rounded ends, 16 to 49 by 30 

 to 90 microns; average 29 by 56 microns. 



Spores: Shortened rods 0.8 to 1.1 by 

 1.8 to 3.3 microns. 



Vegetative cells : Long rods, tapered 

 at ends, 0.5 to 0.6 by 6.7 to 11.0 microns. 



Habitat : Soils. 



Illustrations : Krzemieniewski {loc. 

 cit.) Plate XVII, Fig. 18. 



4. Chondromyces apiculatus Thaxter. 

 (Bot. Gaz., 2S, 1897, 405.) 



Etymology : Modern Latin from Latin 

 apex, a point: with a small point. 



Swarm stage (pseudo Plasmodium) : 

 Rods 1 by 3 to 20 microns. Does not 



grow as well on nutrient agar as Chondro- 

 myces crocatus and produces cysts and 

 cystophores rarely. Cultivated on dung. 

 Kofler states rods are 3 to 5 microns in 

 length. 



Fruiting bodies : Cysts of variable form, 

 cylindrical to broadly turnip-shaped, 

 usually with basal and apical appendages, 

 the latter longer and pointed, bright 

 orange, 28 by 35 microns. Cysts united 

 in a single spherical terminal head, about 

 200 microns in diameter. Cystophore 

 rigid, stiff, seldom branched, to 1 mm 

 high, colorless, longitudinally striate. 

 Cysts germinate at both base and apex. 



Source and habitat : Thaxter (1897, 

 loc. cit.), on antelope dung from Africa. 

 Thaxter (1904, loc. cit.), deer dung, 

 Philippines, Florida. Baur (1906, loc. 

 cit.), on rabbit dung near Berlin. Kofler 

 (1913, loc. cit.), on rabbit dung near 

 Vienna. 



Illustrations: Thaxter (1897, loc. cit.) 

 PI. 30, Figs. 1 to 15. Quehl (1906, 

 loc. cit.), PL 1, Figs. 13 to 14. Jahn 

 (1911, loc. cit.) p. 199, Fig. 5. 



5. Chondromyces pediculatus Thaxter. 

 (Bot. Gaz., 37, 1904, 410.) 



Etymology : From Latin pediculus, 

 a small foot; small footed (stalked). 



Swarm stage (pseudo Plasmodium) : 

 Rods 0.6 to 0.7 by 2 to 4 microns. 



Fruiting bodies : Cysts rounded to bell- 

 shaped, truncate at distal end, orange- 

 yellow, when dry orange-red, 35 to 50 

 microns. Sessile on stalks 40 to 60 

 microns in length, which are arranged as 

 an umbel on the tip of the cystophore. 

 Cystophore 300 to 700 microns in 

 length, solitary, simple, usually rather 

 slender and somewhat wrinkled. 



Source and habitat : Thaxter (loc. cit.), 

 on goose dung in South Carolina. 



Illustrations: Thaxter {loc. cit.) PI. 

 26, Figs. 7 to 13. 



6. Chondromyces medius Krzemien- 

 iewski. (Acta Soc. Bot. Pol., 7, 1930, 

 263.) 



