Leucobryum Moss

Leucobryum albidum (Brid.) Lindb. Oefv. Sv. Vet.-Akad
Forh. 20: 403. 1863;
1
Dicranum albidum Brid. Muse. Recent. 2 1 : 167. 1798. Dicranum glaucum pumilum Michx. Fl. Bor. Am. 2: 297. 1803. Dicranum glaucum albidum Brid. Bryol. Univ. 1: 409. 1826. Leucocobryum vulgare minus Hampe, Linnaea 13: 42. 1839. Leucobryum sediforme C. Mull. Syn. 1: 75. 1848.
Leucobryum minus Hampe; Sull. in A. Gray, Man. ed. 2. 624. 1856. Leucobryum pumilum EG. Britton, Bull. Torrey Club 19: 190. 1892; Leucobryum incurvifolium C. Mull. Bull. Herb. Boiss. 5: 174. 1897. — Leucobryum glaucum albidum Card. Rev. Bryol. 38: 80. 1911.
Pseudautoicous: male plants 1-3 mm. high, on tomentum enclosed by old perichaetial leaves of sterile archegonia; flowers with 2 or 3 antheridia about 0.25 mm. high, without paraphyses, surrounded by 4 or 5 lanceolate-pointed leaves from a somewhat broader, concave base: fertile plants in compact cushions, with branching stems up to 3 cm. high, bearing crowded leaves erect-appressed or widely spreading at the tips: stem-leaves 2-4.5 mm. long, from an ovate base narrowed to a subtubulose point usually scarcely as long as or often much shorter than the base; costa in cross-¥ection"near the base showing 2 layers of cells above and PART 2, 1913] LEUCOBRYACEAE 165
2 layers below the chlorocysts in the thicker parts and 1 layer on either side near the middle of the costa; perichaetial buds mostly appearing terminal and solitary, the inner perichaetial leaves longer and projecting well above the stem-leaves: seta red, erect, 12-18 mm. long: capsule about 1.5 mm. long, nodding, scarcely or not strumose or rarely distinctly strumose, when dry curved and furrowed, without stoma ta; annulus wanting ; lid rostrate, about as long as the capsule; peristome-teeth divided about one half down: spores rough, up to 16 m in diameter.
/ Type locality: Virginia. ^
t Distribution ^New Jersey to Ohio, and southward to Florida and Louisiana/ Cubs*: Andros
Bahamas; Mexico/Guatemala. -■—— — ^^___-^