Clasmatodon parvulus

(Hampe) Sullivant in A. Gray

in A. Gray, Manual ed. 2, 660. 1856.

Illustrated
Basionym: Leskea parvula Hampe Linnaea 13: 46. 1839
Synonyms: Clasmatodon parvulus var. rupestris Lesquereux & James
Treatment appears in FNA Volume 28. Treatment on page 434. Mentioned on page 476.

Plants slender, in interwoven mats. Stems to 1 (–2) cm, branches to 2 (–5) mm, erect; axillary hair distal cell obtuse, pale-brown. Stem-leaves ± subsecund, 0.3–0.5 mm wide; laminal cells 18–30 × 8–10 µm, smooth. Seta 0.2–0.5 cm. Capsule 0.7–1 mm; annulus 3-seriate or 4-seriate, cells small, brown; exostome teeth blunt, partially connate; endostome basal membrane inconspicuous, segments 16, short, slender, unequally 2-fid, partially fused to basal membrane. Spores finely roughened.


Habitat: Tree trunks and bases, flood plain forests, calcareous rock
Elevation: low to moderate elevations (0-400 m)

Distribution

V28 675-distribution-map.gif

Ala., Ark., Fla., Ga., Ill., Ind., Ky., La., Md., Miss., Mo., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., W.Va., Europe

Discussion

The inconspicuous plants of Clasmatodon parvulus form small, slender, straggly mats on tree trunks in southeastern North America north of Mexico. The species is characterized by a short costa (Leskea species have a strong costa ending near the apex), ovate, mostly bluntly acute leaves (Lindbergia has long-acuminate leaves), and a lack of erect, flagelliform branchlets (as in Platygyrium repens). The elliptic, erect capsules with a reduced peristome on short setae also are diagnostic.

Selected References

None.

Lower Taxa

None.

"long" is not a number."broad" is not a number.

... more about "Clasmatodon parvulus"
4-seriate +  and 3-seriate +
not separating +
acuminate +, acute +  and narrowly obtuse +
Dale H. Vitt +
(Hampe) Sullivant in A. Gray +
short-decurrent +
rounded +  and narrowed +
decurrent +
short to long +
Leskea parvula +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
usually straight;curved +
autoicous +  and sexual +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
cucullate +
narrowly elliptic;oblong +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
specialized +
synoicous +, dioicous +, autoicous +, sexual +  and asexual +
subquadrate +  and oblate-quadrate +
differentiated +
3 (?) +  and 2 (?) +
discernible +
Ala. +, Ark. +, Fla. +, Ga. +, Ill. +, Ind. +, Ky. +, La. +, Md. +, Miss. +, Mo. +, N.C. +, Ohio +, Okla. +, Pa. +, S.C. +, Tenn. +, Tex. +, Va. +, W.Va. +  and Europe +
low to moderate elevations (0-400 m) +
not adherent +
Tree trunks and bases, flood plain forests, calcareous rock +
8um (?) +  and 10um (?) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
concave;ovate;ovatelanceolate +
pointed +
slender +
serrate +, entire +  and serrulate +
subentire +  and serrulate +
interwoven +
long-rostrate +
perfect +  and xerocastique +
hygrocastique +
in A. Gray, Manual ed. +
pellucid +  and opaque +
undifferentiated +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Illustrated +
strongly longitudinally plicate;not plicate +
patent +, spreading +  and erect +
triangular +, ovate +  and linear-lanceolate +
0.3mm;0.5mm +
branched +  and terete-foliate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
reddish +  and green +
pendent +, arching +, erect +, ascending +  and creeping +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Clasmatodon parvulus var. rupestris +
Clasmatodon parvulus +
Clasmatodon +
species +
incrassate +