Coprinus colensoi, Berk.; pusillus, niveus, pileo e cylindrico subcampanulato furfuraceo, stipite gracili tomentoso, sporis minoribus. HAB . On dung, Colenso, no. 5293 . Subfasciculate. Pileus scarcely exceeding a line in height, cylindrical, obtuse, at length subcampanulate, white furfuraceous. Stem slender, 1/4-3/4 inch high, tomentose. Gills linear. Spores oblong, 1/3500 of an inch long. Differs from. C. niveus in its small size, and much smaller spores : those in C. niveus, at least in American specimens, are not less than 1/2000 of an inch long.

Fig. 4 The type specimen (BERKELEY 5293) is well preserved. The spores of this small Coprinus, only 1-2 cm high, measure 7-8 X 3.5-4 µ and have a broad apical germ-pore. The globular cells of the veil (20-50 µ diam.) on top of the pileus are densely but minutely warted. These peculiarities put C. colensoi into sect. Vestiti (Lange) Kuhner and Romagnesi.

[Notes from Kew Type specimen, PRJ 2010] Kew images.

Pileus cylindrical, obtuse, then campanulate, very thin, covered with snow-white scurfy meal, below the meal greyish and slightly striate, ½ to 3/4 cm. high; gills narrow, black; spores blackish-brown, elliptic-oblong, 0.7 µ long; stem 1.5-4 cm. long, slender, tomentose, white.

Northern Island, New Zealand.

On dung; subfasciculate.

A pretty little endemic species, allied to Coprinus niveus, but smaller, and the pileus not so cottony in its covering or veil.