Inhaltsangabe
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 Excerpt: ...flowers on separate plants (dioicous). Veil (calyptra).--Smooth, transparent, split on one side. Spore-case.--Long, egg-shaped with a short neck, dark-red, erect, somewhat arched; four-or five-angled and deeply furrowed when dry. C. purpureum. Pedicel.--Slender, wine-red, erect. Lid (operculum).--Conical, short-beaked. Teeth (peristome).--Purple, each split into two equal, strongly cross-barred segments, with tiny projections toward the apex. Annulus.--Large, rolling back as the lid falls. Spores.--Mature in early spring, when they are ousted by the shrinking of the wall tissue. Distribution.--Almost universal. Variety Xanthopous.--Greek gav06;, yellow, and 77-0O?, a foot; has a pale-yellow pedicel. Variety Aristatus.--Latin "awned"; has the spore-case and pedicel pale and the mid-vein of the leaf extending beyond the apex of the leaf blade. Variety Minor.--Latin "smaller"; is said to have narrower teeth jointed only from the middle downward. Genus POTTIA, Ehrh. The species of this genus are small and grow in tufts or cushions on the ground or in crevices of rocks. The stems are simple or sparingly branched from the base. The leaves are oval to oblong and obovate, soft, opaque, smooth or covered with tiny projections; the apex is usually taper-pointed, or hair-pointed; the base transparent; the vein round in section. The cylindrical to obovate spore-case has sometimes a very short pedicel and P. truncata. Leaves. sometimes a long one. The peristome may have imperfect teeth or none or sixteen tiny flat ones. There are about eighty-three species in all, fourteen in North America. The genus was named for Professor D. F. Pott, a German botanist. Pottia truncata, Fuern., l. c. Habit and babiiat.--Common in loose brighSgreen tufts in fields an...
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