Daltonia

Hooker & Taylor

Muscol. Brit., 80, plates 3 [near upper left], 22 [lower center left & right]. 1818.

Etymology: For Rev. John Dalton, 1764 – 1843, British botanist and bryologist
Treatment appears in FNA Volume 28. Treatment on page 252. Mentioned on page 251, 652.

Plants glossy. Stems prostrate or suberect, branches short, ascending. Leaves erect, sometimes flexuose-twisted and contorted when dry, flexuose when moist, ovatelanceolate, ligulate to lance-acuminate, symmetric, straight, keeled; margins entire, strongly bordered, cells linear, incrassate, in several rows; costa ending before apex in distal 1/4; laminal cells usually uniformly rhomboidal to elongate-hexagonal, walls usually incrassate; basal-cells sometimes rounded, longer, smooth. Sexual condition autoicous or synoicous. Seta roughened distally [smooth]. Capsule erect to subinclined; exothecial cells strongly collenchymatous; exostome teeth hygrocastique (teeth incurved when dry and reflexed when moist), densely papillose, with zigzag longitudinal lines, not striate, not furrowed; endostome segments linear, narrow, same length as teeth, perforate along keel. Calyptra smooth to somewhat roughened distally, basal fringe hairs dense. Spores papillose.

Distribution

nw North America, Mexico, West Indies, Central America, South America, Europe, Asia, Africa, Atlantic Islands, Indian Ocean Islands, Pacific Islands (New Zealand), Australia

Discussion

Species ca. 22 (1 in the flora).

Selected References

None.

... more about "Daltonia"
Patricia M. Eckel +
Hooker & Taylor +
synoicous +, autoicous +  and sexual +
naked +  and 1-stratose +
smooth to somewhat +
incrassate +
not differentiated +
reduced +
red pigmented +
nw North America +, Mexico +, West Indies +, Central America +, South America +, Europe +, Asia +, Africa +, Atlantic Islands +, Indian Ocean Islands +, Pacific Islands (New Zealand) +  and Australia +
For Rev. John Dalton, 1764 – 1843, British botanist and bryologist +
ligulate +  and flexuose-twisted +
straight +  and flexuose +
keeled +, lance-acuminate +  and ovatelanceolate +
revolute +  and plane +
Muscol. Brit., +
papillose +
roughened +  and smooth +
elongate +
branched +  and terete-foliate +
suberect +  and prostrate +
Daltonia +
Daltoniaceae +
brownish +, yellow-green +  and dark green +
specialized +
infrequent;common +
synoicous +, autoicous +, sexual +  and asexual +
incrassate +
thinner +  and thicker +
small;medium-sized +