Drummondia

Hooker in T. Drummond

in T. Drummond, Musc. Amer., 62. 1828.

Etymology: For Thomas Drummond, 1780 – 1835, Scottish botanist who collected extensively on two expeditions to North America
Treatment appears in FNA Volume 28. Treatment on page 40. Mentioned on page 12, 38, 41, 653.

Plants medium-sized, in loose mats. Stems creeping, branches erect. Leaves erect-appressed and stiff when dry, spreading to widespreading when moist, broadly lanceolate to oblong-lanceolate, not rugose; margins entire; apex obtuse, acute, or cuspidate; costa ending just below apex; basal laminal cells rectangular to quadrate; distal cells ± roundedquadrate, 6–10 µm, smooth; marginal cells not distinct from basal. Sexual condition autoicous; perichaetial leaves longer than stem-leaves. Seta 2–3.5 mm. Capsule long-exserted, ovate to ovate-oblong, wrinkled when old and dry, not constricted below mouth; stomata absent; peristome single; exostome teeth 16, smooth. Calyptra cucullate, long-conic, smooth, naked, not plicate, covering distal 1/3 of capsule. Spores isosporous, multicellular.

Distribution

North America, ne Mexico, South America, Asia

Discussion

Species 6 (1 in the flora).

Drummondia is characterized by branched, prostrate stems and cucullate calyptrae.

Selected References

None.

... more about "Drummondia"
awned +  and apiculate +
Dale H. Vitt +
Hooker in T. Drummond +
not decurrent +
long-conic +  and cucullate +
16-ribbed +, 8-ribbed +  and symmetric +
long-exserted +
ovate;ovate-oblong +
not constricted +
differentiated +
roundedquadrate +
North America +, ne Mexico +, South America +  and Asia +
linear-lanceolate +
For Thomas Drummond, 1780 – 1835, Scottish botanist who collected extensively on two expeditions to North America +
reflexed +, recurved +  and erect +
striate +  and papillose +
rectangular;elliptic +
connate +
occasional +
flexuose +
not rugose +
broadly lanceolate +  and oblong-lanceolate +
denticulate +, plane to revolute +  and plane +
autoicous +  and sexual +
rostrate;convex;conic +
mammillose +  and smooth +
2-fid +  and conic +
sometimes larger +
lateral +  and terminal +
in T. Drummond, Musc. Amer., +
sinistrorse +, dextrorse +  and erect +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
multicellular +
erect-ascending +
superficial +
Drummondia +
Orthotrichaceae +
specialized +
cladautoicous +, pseudautoicous +, dioicous +  and sexual +
incrassate +
olive brown;reddish-brown;olive brown;reddish-brown;dark green +