Drummondia prorepens

(Hedwig) E. Britton

Mem. Torrey Bot. Club 4: 180. 1894.

EndemicIllustrated
Basionym: Gymnostomum prorepens Hedwig Sp. Musc. Frond., 35, plate 3 [top], figs. 1 – 4. 1801
Synonyms: Drummondia canadensis (Kindberg) Macoun & Kindberg D. clavellata (Hooker & Greville) Hooker D. clavellata var. canadensis Kindberg
Treatment appears in FNA Volume 28. Treatment on page 41.

Plants olive green, dark green, or yellowbrown. Stem-leaves channeled, concave, 1.1–1.8 mm; apex sometimes incurved; costa broadly channeled; alar cells yellow, ± inflated at marginal insertion; basal laminal cells 6–10 µm. Perichaetial leaves closely clasping seta, broadly lanceolate, to 2 mm, apex acute or acuminate, basal laminal cells rectangular, yellowish green. Seta dextrorse. Capsule 0.9–1.3 mm, sharply contracted to seta, neck absent; exostome teeth 3–6 cells high, rudimentary, truncate. Spores roundedquadrate to elliptic-rectangular, 70–100 µm in longest dimension, almost smooth, brown.


Habitat: Trunks and branches of deciduous trees, dry, upland forests, cedar glades, conifers, logs
Elevation: low to moderate elevations

Distribution

V28 47-distribution-map.gif

N.B., N.S., Ont., Que., Ala., Ark., Conn., Del., D.C., Ga., Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Vt., Va., W.Va.

Discussion

Drummondia prorepens is characterized by long, creeping stems with many erect branches bearing terminal sporophytes. This habit, combined with the cucullate calyptrae, the smooth, ovate capsules with 16 truncate exostome teeth, the lack of stomata, and the undifferentiated basal laminal cells, is absolutely diagnostic.

Selected References

None.

Lower Taxa

None.
... more about "Drummondia prorepens"
awned +  and apiculate +
Dale H. Vitt +
(Hedwig) E. Britton +
not decurrent +
Gymnostomum prorepens +
long-conic +  and cucullate +
16-ribbed +, 8-ribbed +  and symmetric +
long-exserted +
ovate;ovate-oblong +
not constricted +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
rudimentary +
differentiated +
channeled +
roundedquadrate +
N.B. +, N.S. +, Ont. +, Que. +, Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Miss. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, S.C. +, Tenn. +, Vt. +, Va. +  and W.Va. +
low to moderate elevations +
linear-lanceolate +
reflexed +, recurved +  and erect +
striate +  and papillose +
rectangular;elliptic +
connate +
occasional +
Trunks and branches of deciduous trees, dry, upland forests, cedar glades, conifers, logs +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
concave +  and channeled +
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 +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
lateral +  and terminal +
Mem. Torrey Bot. Club +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Endemic +  and Illustrated +
multicellular +
roundedquadrate;elliptic-rectangular +
erect-ascending +
superficial +
Drummondia canadensis +, D. clavellata +  and D. clavellata var. canadensis +
Drummondia prorepens +
Drummondia +
species +
specialized +
cladautoicous +, pseudautoicous +, dioicous +  and sexual +
incrassate +
yellowbrown;dark green;yellowbrown;dark green;olive green +