CAT AO 
OF 
Set ISH LICHENS. 
Pach ol: 
Susctass ASCOLICHEHN HES. 
Series I. GYMNOCARPEA!.—Fruit a more or less open 
apothecium. 
Series II. PYRENOCARPEAL.—Fruit closed, a perithecium. 
Series I G@YMNOCARPESA. 
Subseries I. CONIOCARPINEA. — Apothecium partially 
closed, retaining the spores when mature in a powdery 
mass (mazedium). 
Subseries II. CYCLOCARPINEA.—Apothecium with open 
disc ; spores ejected when mature. 
Subseries III. GRAPHIDINEA.—Apothecium with elongate 
narrow disc (lirella) or roundish (ardella) ; spores ejected 
when mature. 
Subseries I. CONIOCARPINEZ:. 
Thallus crustaceous (or wanting), or fruticose (foliose in some 
foreign genera). Algal cells Protococcus, Pleurococeus, Stichococcus, 
or Trentepohlia, Fruit a stalked or sessile apothecium, usually 
hyphal in origin, with a capitulum open or partially closed ; asci 
usually cylindrical, dissolving early, so that the spores as they 
I. B 
