AUSTRALIAN FUNGI, 
323 
Family III, CHYTRIDIACEiE. DBy. 
Hyphas none, or obsolete, and then sporangia naked, reproduc- 
tion agamic by zoospores. Resting spores formed from the 
encysted zoospores, or from a single vegetable cell, or by conjunc- 
tion of two cells. 
Genus 8. STNCHYTRIUM. DBy. 
Minute unicellular fungi, entirely destitute of mycelium, inhabit- 
ing the epidermal cells of living plants, reproduction by zoogonidia 
produced in resting spores or asci ; no sexual reproduction known, 
1698. Syncliytrium taraxaci. DBary Chytr. Sacc. Syll. 
999. 
Spots crust-like, confluent, orange-red, galls small, flattened, 
scarcely projecting above the surface of the leaf ; resting spores 
globose, brown, smooth (50-80 p. diam.). Sori globose or 
elliptical. 
On leaves of Composite. Victoria. (Fig. 254.) 
1699. Syncliytrium succisse. DeBary Chytr. Sacc. Syll. 
1002. 
Zoosporangial cells (100-170 p), containing the sporangia 
(25-50 p), filled with an orange-red protoplasm, resting spores 
produced in a gall-like tubercle, globose or ellipsoid (50-80 p), 
with a tawny-brown epispore, and a pale red protoplasm. Galls 
wart-like, shortly cylindrical (1 m.m. high and broad), solitary, or 
confluent in a brown crust. 
On stems and leaves. Victoria. 
Family IV. PROTOMYCETACE.H3. DBy. 
Mycelium intracellular, vaguely branched, and septate, producing 
numerous intercalary, thick-walled resting spores. Conidia un- 
known. Resting spores globose, or broadly elliptical ; in germi- 
nation the thin endospore escapes entire, though a rupture in the 
wall of the resting spore, as a sporangium filled with numerous 
minute, cylindrical, motionless spores, which conjugate in pairs, 
and produce a mycelium by germination. 
Genus 9. FROTOMYCES. Unger. 
Parasitic in the subepidermal tissues of living plants, usually 
forming coloured spots or patches ; resting spores terminal or 
intercalary, wall thick, usually consisting of two distinct layers, 
hyaline or coloured. 
1700. Protomyces macrosporus. TJnger. Sacc. Syll. vn. 
1120. 
Spores usually aggregated in scattered, oblong, or subglobose 
gibbous spots, which are at first pale and translucent, then brown ; 
spores subglobose (30-80 p), epispore pale yellow, smooth ; 
sporidia cylindrical, hyaline (2-2-‘- xl/i). 
On Hydro cotyle. Queensland. (Fig. 253.) 
