Pottiaceae subfam. Merceyoideae

Brotherus in H. G. A. Engler et al.

in H. G. A. Engler et al., Nat. Pflanzenfam. ed. 2, 10: 246. 1924,.

Synonyms: Undefined subfam. Merceyaceae Casares-Gil
Treatment appears in FNA Volume 27. Treatment on page 483. Mentioned on page 480.

Plants proximally blackish green or weakly iridescent metallic tan or yellowish-brown. Stem central strand, sclerodermis, and hyalodermis all absent. Leaves ligulate to oblanceolate, apex blunt to acute, margins plane, distal laminal cells usually 1-stratose, walls smooth, KOH yellow to yellowish orange; costa with a differentiated abaxial epidermis; gemmae clavate. Peristome absent.

Distribution

Worldwide in temperate and tropical areas

Discussion

Genus 1.

Selected References

None.

Lower Taxa

elongate +  and quadrate +
of 1-2 rows +  and differentiated +
long-excurrent +  and short-excurrent +
blunt +  and acute +
Richard H. Zander +
Brotherus in H. G. A. Engler et al. +
reniform +  and rounded +
papillose +  and smooth +
usually slightly wider +
usually ovate;oblong +
obovoid +
mitrate +  and cucullate +
cleistocarpous +  and stegocarpous +
monoicous +, dioicous +  and sexual +
flat to bulging +
vesiculose +  and thick-walled +
few +  and several +
elongate-rhomboid +  and elongate +
tomentose +  and bare +
Worldwide in temperate and tropical areas +
differentiated +
multicellular +
yellow +  and orange-red or red +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
concave;keeled;channeled;ovoid;lanceolate or lingulate +
oblanceolate +
reduced +
dentate +  and entire +
incurved +  and recurved +
short-conic;short-rostrate +
photosynthetic +
compound +, simple +, hollow +  and solid +
flattened +  and 2-fid +
lateral +  and terminal +
lateral +  and terminal +
red +, orange +  and yellow +
consisting of 16 mostly 2 times cleft spiculose striate or papillose lanceolate teeth , , , , +  and rudimentary +
in H. G. A. Engler et al., Nat. Pflanzenfam. ed. +
straight +
elongate +
2 +  and 1 +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
rounded-triangular +  and rounded-pentagonal +
0.2 cm2 mm <br />0.002 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Undefined subfam. Merceyaceae +
Pottiaceae subfam. Merceyoideae +
Pottiaceae +
subfamily +
ovoid;cylindric +
yellow +  and yellowish orange +
stemless +  and perigoniate +
yellowish-brown;tan;iridescent metallic;blackish green +
occasionally smaller than the perichaetiate +