Symblepharis vaginata

(Hooker) Wijk & Margadant

Taxon 8: 75. 1959,.

Basionym: Didymodon vaginatus Hooker Icon. Pl. 1: plate 18, fig. 4. 1837
Synonyms: Symblepharis helicophylla Montagne
Treatment appears in FNA Volume 27. Treatment on page 431. Mentioned on page 432.

Stems ca. 0.8–1.2 (–3) cm, leaves spreading, flexuose, and subfalcate when wet, crisped and tortuose when dry, sparingly radiculose at the base. Leaves 6–7 mm, leaf base broader at the undulating shoulders than the extreme base, with a narrow, fragile decurrency, margins plane, distantly denticulate distally, sharply serrulate near the apex; basal-cells smooth, elongate-rectangular to linear, 65–85 µm, narrowly long-rectangular, thin-walled, not porose, clear, medial lamina cells irregularly short-rectangular to subquadrate, 10–12.5 × 6–8 µm, thick-walled, 1-stratose except for irregular 2-stratose patches on the distal margins. Seta 10–12 mm, straight, single or occasionally clustered in groups of 2–4. Capsule yellow, 3–4 mm, deep red at the mouth, smooth to weakly and irregularly striate in older capsules; peristome inserted below the mouth; operculum ca. 0.8 mm.


Phenology: Capsules mature winter.
Habitat: Rotting punky, sometimes charred logs, less commonly on bark at base of trees, rock, soil in coniferous forests
Elevation: high elevations (2200-3100 M), occasionally to 3800 m

Distribution

Ariz., N.Mex., Mexico, Central America (Costa Rica), Central America (Guatemala), Central America (Panama), Asia (China), Asia (India), Asia (Japan), Asia (Korea), Asia (Papua New Guinea)

Discussion

Stem growth beyond an apparently lateral sporophyte is actually the extension of a subperichaetial branch (sympodial branching). As in Symblepharis, all three species of Oncophorus in North America have bistratose leaf margins; the blade of O. rauei is bistratose throughout its distal lamina in addition to the margins. Oncophorus virens does not have a clasping leaf base, and the distal portion of the blade tapers gradually to the apex. The gametophyte of S. vaginata is, however, nearly identical with that of O. wahlenbergii, except it is of a relatively clear yellow, whereas O. wahlenbergii is a sooty, fuscous yellow. One useful character with which to distinguish these two species when sterile is the leaf cross section. The leaf of S. vaginata is histologically reduced: the adaxial epidermis is absent at mid leaf and, distally even the adaxial stereid band vanishes, leaving only the guide cell layer. In O. wahlenbergii the mid leaf costa is robust, and the adaxial epidermis layer is prominent.

Selected References

None.

Lower Taxa

None.
... more about "Symblepharis vaginata"
persistent +  and deciduous +
differentiated +
not deciduous +
Patricia M. Eckel +
(Hooker) Wijk & Margadant +
short to long +
not porose +  and thin-walled +
long-rectangular +, elongate-rectangular +  and linear +
not differentiated +
not strumose +, tapering +, obovate +  and flaring +
Didymodon vaginatus +
microphyllous +
pseudomonoicous +, dioicous +, autoicous +  and sexual +
reproduction +  and asexual +
cucullate +
red +  and yellow +
arcuate +  and straight +
striate +  and smooth +
cylindric +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
papillose +  and mammillose +
percurrent;shortly excurrent +
0 +  and 1/3 +
toothed +
autoicous +, sexual +  and asexual +
subquadrate +
Ariz. +, N.Mex. +, Mexico +, Central America (Costa Rica) +, Central America (Guatemala) +, Central America (Panama) +, Asia (China) +, Asia (India) +, Asia (Japan) +, Asia (Korea) +  and Asia (Papua New Guinea) +
high elevations (2200-3100 M), occasionally to 3800 m +
Rotting punky, sometimes charred logs, less commonly on bark at base of trees, rock, soil in coniferous forests +
1-stratose +  and thick-walled +
irregularly short-rectangular;subquadrate +
falcate-secund +
crisped-contorted +
flexuose +
crisped +  and subfalcate +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
2-stratose +  and 1-stratose +
denticulate +  and plane +
long-rostrate +
0.8 cm8 mm <br />0.008 m <br /> (?) +
nonpitted +  and pitted +
toothed +  and forked +
pitted-striolate +
papillose +  and striolate +
papillose +  and striolate +
Capsules mature winter. +
undifferentiated +
straight +
cygneous +  and elongate +
slender +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
foliate;simple +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
superficial +
canaliculate +  and linear-lanceolate +
Symblepharis helicophylla +
Symblepharis vaginata +
Symblepharis +
species +
deciduous +
lanceolate +
yellow-green +  and golden yellow +