FIGURE 1. A–C in Mallomonas alpestrina sp. nov. (Synurales, Chrysophyceae, Stramenopiles) and its spineless relatives-Mallomonas alata group

FIGURE 1. A–C. Collar scales in: A. Mallomonas alata f. alata. B. Mallomonas alata f. hualvensis. C. Mallomonas tirolensis. D–F. Body scales in: D. Mallomonas alata f. alata. E. Mallomonas alata f. hualvensis. F. Mallomonas tirolensis. G–I. Transitional scales between the rear and the body scales in: G. Mallomonas. alata f. alata. H. Mallomonas alata f. hualvensis (note the considerably broad anterior flange). I. Mallomonas tirolensis. J–L. Rear scales in: J. Mallomonas alata f. alata. K. Mallomonas alata f. hualvensis. L. Mallomonas tirolensis. Scale bar = 1μm. A–L are shown at the same magnification.