386 PLANT DISEASES 



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

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

 20 fj.j spores elliptical, ends obtuse, tinged olive, 15 X 

 10 p; paraphyses tinged olive at the tip. 



Cyttaria gunnii, Berk., Hook., Lond. Journ., 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 p ; 

 spores elliptical, ends obtuse, 15 X 5-6 //, 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 





