. Guide to Sowerby's models of British fungi in the Department of Botany, British Museum (Natural History) . menmm becoming plane, darkchocolate-brown, then black. Common on fallen tree-trunks in autumn. size.) 76 GUIDE TO THE MODELS OF FUNGI. SUB-CLASS II.—PYRENOMYCETES. In the Pyrenomycetes the asci are borne in flask-shaped bodies,perithccia, of carbonaceous or membranaceous consistency, sometimesconfluent with the stroma, with an opening at the apex throughwhich the spores escape. GENUS XLVIII.—CORDYCEPS Fr. Stroma erect, fleshy, clavate or capitate; perithecia immersed ;spores linear, mul
. Guide to Sowerby's models of British fungi in the Department of Botany, British Museum (Natural History) . menmm becoming plane, darkchocolate-brown, then black. Common on fallen tree-trunks in autumn. size.) 76 GUIDE TO THE MODELS OF FUNGI. SUB-CLASS II.—PYRENOMYCETES. In the Pyrenomycetes the asci are borne in flask-shaped bodies,perithccia, of carbonaceous or membranaceous consistency, sometimesconfluent with the stroma, with an opening at the apex throughwhich the spores escape. GENUS XLVIII.—CORDYCEPS Fr. Stroma erect, fleshy, clavate or capitate; perithecia immersed ;spores linear, multi-septate, separating at the septa. There are seven British species, two ofwhich are represented bymodels. 200. Cordyceps militaris Fr.—At first sub-caespitose, white,and mealy; then club-shapedand crimson, with the headminutely tuberculose and thestalk equal. This plant grows upon thepupae of moths in the 500 X-200 Fig. 84.—Corilyceps militaris Fr., with branch-inj; coniaial state (Isaria farinosa Fr.).(Natural size.) Tubercles of stroma x X 200. Portion of septate sporeX 500. 201. Cordyceps capitataFr.—Head ovato-globose, yel-lowish-brown, red-brown, orblack; the stalk usually lemon-yellow, at length becoming blackish. Far less common than the last; it is much larger, and growsparasitically on Elaplwtnyces gratndntus ¥i\ An allied species, Cordyceps sinensis, is sold in the markets ofChina as food. Caterpillars with the Cordyceps attached are tiedwith silk threads in small bundles; each bundle contains abouteight or ten affected caterpillars, whose bodies are completelypermeated by the mycelium of the fungus. The best known of the larger species, C. Robcrtsii, grows on thelarvae of Hepialus virescens in New Zealand, and is popularly calledthe vegetable caterpillar. When fully grown, this is six or eightinches high ; it grows from the back of the second joint from thehead
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