3 86 PLANT DISEASES 



Yellowish-cinnamon, obovate, umbonate, 1-2 cm. high, 

 stuffed, even, glabrous, fertile loculi apical; asci 200-250 x 

 20 p; spores elliptical, ends obtuse, tinged olive, 15 X 

 10 /*; paraphyses tinged olive at the tip. 



Cyttaria gunnii, Berk., Hook., Lond.Joiirn.^ 1848, p. 576, 

 tab. xx., xxi. Broadly piriform, at length hollow, smooth, 

 loculi small, dehiscing by an irregular, large opening, densely 

 gregarious, 1*5-2 '5 cm. broad, whitish ; asci cylindrical ; 

 spores broadly elliptical, i-seriate, hyaline. 



Cyttaria berterii, Berk., Linn. Trans., xix., p. 37. 

 Yellow or orange, obovate 1-3 cm. diam., loculi sub- 

 globose, at first closed; asci cylindric-fusoid, 100X7-8 ft; 

 spores elliptical, ends obtuse, 15x5-6 p hyaline, 2-guttulate 

 possibly becoming i-septate. 



BASIDIOMYCETES 



Spores produced (usually four in number) at the apex of 

 continuous (non-septate) basidia. Basidia closely packed 

 side by side to form the hymenium, which may be exposed 

 from the first (Hymenomycetes), or enclosed in a peridium 

 until maturity (Gastromycetes). 



Agaricaceae. Hymenium occupying the entire surface 

 of radiating gills or lamellae. Sporophore with a central 

 stem, dimidiate, or rarely resupinate. 



Armillaria, Fries. Pileus symmetrical, more or less 

 fleshy; gills adnate or slightly decurrent; stem central, 

 passing continuously into the flesh of the pileus, furnished 

 with a ring ; spores white, elliptical. 



Armillaria mellea, Vahl. Pileus 2-5 in. across, convex, 

 then expanded, often dark or covered with olive down 



