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Ceratodon conicus Lindberg 1879

Comprehensive Description

provided by North American Flora
Ceratodon conicus (Hampe) Lindb. Musci Scand. 27. 1879
Trichostomum conicum Hampe; C. Miill. Syn. 1: 575. 1849.
Ceratodon minor Aust. Bot. Gaz. 2: 89. 1877.
Ceratodon purpureas Grdfii Schlieph.; Limpr. in Rab. Krypt.-Fl. 4': 487. 1887.
Plants small, 5-10 mm. high, forming low, dense tufts; stems short, seldom more than 5 mm. long, branching by subapical innovations: leaves erect-appressed, not circinate when dry, spreading, not recurved when moist, gradually larger and crowded upward, 1-1.5 mm. long; base ovate-lanceolate, acuminate; margins strongly revolute; costa stout, excurrent into a canaliculate smooth or serrulate awn; cells of the base all square, laxer near the costa, the upper ones irregular ; perichaetial leaves few, erect, sheathing, only about 1 mm. long, the basal cells more hyaline, the costa excurrent or in the two inner, convolute leaves, ending below the blunt apex. Dioicous: seta pale-red or yellow, 10-15 mm. long, erect: calyptra cucullate: capsule erect, cylindric, 1.5-2 mm. long, and slightly unequal at base; neck slightly strumose; walls pale-yellow or brown and striped, slightly sulcata when dry; lid conic, red, bordered; annulus falling in fragments or rarely persistent; peristome short, exserted on a short membrane; teeth with few nodose basal joints, and slender and papillose pale divisions with an obscure or sometimes scarcely perceptible border: spores smooth, 8-10 ^ in diameter, maturing in May and June.
Type locality: Flegesen, near Hameln. northern Germany.
Distribution: On walls and waste grounds, rare in North America, known only from a few stations in Minnesota, Idaho, Washington, British Columbia, and Alaska; also in Europe and Asia.
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bibliographic citation
Albert LeRoy Andrews, Elizabeth Gertrude Britton, Julia Titus Emerson. 1961. SPHAGNALES-BRYALES; SPHAGNACEAE; ANDREAEACEAE, ARCHIDIACEAE, BRUCHIACEAE, DITRICHACEAE, BRYOXIPHIACEAE, SELIGERIACEAE. North American flora. vol 15(1). New York Botanical Garden, New York, NY
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