Pseudotaxiphyllum elegans

(Bridel) Z. Iwatsuki

J. Hattori Bot. Lab. 63: 449. 1987.

Illustrated
Basionym: Isothecium elegans Bridel Bryol. Univ. 2: 356. 1827, P. elegans var. gracilens (Grout) H. A. Crum Steere & L. E. Anderson
Synonyms: H. borrerianum Müller Hal. Isopterygium elegans (Bridel) Lindberg Plagiothecium elegans (Bridel) Schimper P. elegans var. schimperi (Juratzka & Milde) Limpricht P. elegans var. terrestre (Lindberg) Rau & Hervey
Treatment appears in FNA Volume 28. Treatment on page 561. Mentioned on page 560, 578.

Plants in thin to dense mats, dark green to yellowish. Stems 3.5 cm, 1–2.5 mm wide, complanate-foliate. Leaves erect-spreading or sometimes secund with apices pointing toward substrate, not upturned-homomallous, close to somewhat distant, lanceolate, ovate or oblong-lanceolate, symmetric, smooth or weakly undulate, 0.3–2 × 0.2–0.7 mm; margins plane, serrulate to entire proximally, serrulate to strongly serrate distally; apex acuminate; costa double, strong; alar cells undifferentiated or quadrate to rectangular, 1–3 on margins; medial laminal cells 48–100 × 4–7 µm; distal cells sometimes minutely prorulose at distal ends on abaxial surface. Specialized asexual reproduction present as propagula clustered in leaf-axils below stem apices, 0.5–1.5 mm, yellow to green, not twisted-vermiform, resembling parent plant but smaller, bearing reduced leaves from apex to base of stems. Sexual condition dioicous. Seta 1–2.5 cm. Capsule cernuous to pendulous, oblong-ovoid to ovoid, 1–2 mm; operculum conic to short-rostrate. Spores 7–12 µm.


Phenology: Capsules mature spring–summer.
Habitat: Woods, acidic rock and soil, humus, base of trees, rotten logs
Elevation: low to high elevations (0-2000 m)

Distribution

V28 876-distribution-map.gif

B.C., N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que., Yukon, Ala., Alaska, Ark., Calif., Conn., Del., Ga., Idaho, Ill., Ind., Ky., Maine, Md., Mich., Minn., Mo., N.H., N.J., N.Y., N.C., Ohio, Oreg., Pa., S.C., Tenn., Vt., Va., Wash., W.Va., s South America (Argentina).y

Discussion

Pseudotaxiphyllum elegans is morphologically similar to 2. P. distichaceum. For distinctions, see discussion of that species.

Selected References

None.

Lower Taxa

None.
... more about "Pseudotaxiphyllum elegans"
3-seriate +  and 2-seriate +
acuminate +
Robert R. Ireland Jr. +
(Bridel) Z. Iwatsuki +
not decurrent +
Isothecium elegans +  and P. elegans var. gracilens +
multicellular +
erect-spreading;squarrose +
undulate +, oblong-lanceolate +, ovatelanceolate +  and lanceolate +
cucullate +
cernuous +  and pendulous +
oblong-ovoid +  and ovoid +
constricted +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
similar +  and pigmented +
quadrate to rectangular +  and undifferentiated +
1 +  and 3 +
plane;inflated;quadrate;short-rectangular +
enlarged +
quadrate to short-rectangular +  and not differentiated +
rudimentary +
ecostate +  and short +
ecostate +  and obscure +
dioicous +  and sexual +
B.C. +, N.B. +, Nfld. and Labr. +, N.S. +, Ont. +, P.E.I. +, Que. +, Yukon +, Ala. +, Alaska +, Ark. +, Calif. +, Conn. +, Del. +, Ga. +, Idaho +, Ill. +, Ind. +, Ky. +, Maine +, Md. +, Mich. +, Minn. +, Mo. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Oreg. +, Pa. +, S.C. +, Tenn. +, Vt. +, Va. +, Wash. +, W.Va. +  and s South America (Argentina).y +
low to high elevations (0-2000 m) +
fused +  and free +
filamentous +
Woods, acidic rock and soil, humus, base of trees, rotten logs +
not distant +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
erect-spreading +
undulate +, oblong-lanceolate +, ovate +  and lanceolate +
reduced +  and smaller +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
serrulate +  and strongly serrate +
dioicous +, autoicous +  and sexual +
conic +  and short-rostrate +
lanceolate;ovate +
Capsules mature spring–summer. +
J. Hattori Bot. Lab. +
papillose +  and smooth +
dark red +, reddish-brown +, red +  and yellow +
elongate +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Illustrated +
spheric;ovoid +
yellow +  and green +
not twisted-vermiform +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
complanate-foliate +
asymmetric +, 2-pinnate +  and 1-pinnate +
falcate-secund +
straight +
erect-spreading +  and squarrose +
undulate +, oblong-lanceolate +, ovatelanceolate +  and lanceolate +
3.5 cm35 mm <br />0.035 m <br /> (?) +
differentiated +
1mm;2.5mm +
H. borrerianum +, Isopterygium elegans +, Plagiothecium elegans +, P. elegans var. schimperi +  and P. elegans var. terrestre +
Pseudotaxiphyllum elegans +
Pseudotaxiphyllum +
species +
dark green +  and yellowish +