Bellibarbula

P. C. Chen

Hedwigia 80: 222, plate 38. 1941 ,.

Etymology: Latin bellus, beautiful, and genus Barbula
Treatment appears in FNA Volume 27. Treatment on page 525. Mentioned on page 479, 566.

Plants in dense turfs, dull yellow-green to redbrown distally, brown or redbrown proximally. Stems small, erect, 0.6–3 cm; hyalodermis absent, sclerodermis thick, central strand present; axillary hairs short, 3–4 cells long, the basal 1 (–2) cells yellow. Leaves incurved and weakly contorted when dry, weakly spreading when moist, short ovatelanceolate to triangular; base little differentiated or ovate; margins strongly recurved in basal 3/4 or nearly throughout, entire, lamina 1-stratose; apex narrow and bluntly acute, sometimes acuminate, occasionally with an apiculus; costa ending before the apex to percurrent, adaxial outgrowths absent, sinuose beyond leaf middle, rather thick, adaxial cells quadrate in 3–4 rows, papillose; transverse-section circular or somewhat flattened, adaxial epidermis differentiated, adaxial stereid band moderately developed, guide cells 4–5 in 1 layer, hydroid strand lacking, abaxial stereid band present, abaxial epidermal-cells present, semicircular or semielliptic; basal-cells weakly differentiated medially near the insertion, quadrate to subrectangular, 1 (–3):1, walls somewhat thin to evenly thickened; distal laminal cells irregularly hexagonal-quadrate to oval or elliptical, 1: 1, 1-stratose, with small, sharp, simple to 2-fid papillae, 4–6 per lumen, thin to somewhat thick-walled, in section superficially flat to subconvex on both surfaces. Specialized asexual reproduction absent. Sexual condition dioicous; perigonia at stem apex or as subterminal buds; [perichaetia terminal, distinctive, leaves convolute-sheathing, long-rectangular with an apiculus, to 2 mm. Seta 4–6 mm. Capsule stegocarpous, theca cylindric, annulus of highly vesiculose cells, revoluble; operculum short-conic; peristome lacking. Calyptra cucullate. Spores 15–18 µm.] Laminal KOH color reaction red.

Distribution

e North America, Mexico, South America (Bolivia), Asia (China), Asia (the Himalayas), Asia (India)

Discussion

Species 2 (1 in the flora).

Bellibarbula recurva has recently been removed from Bryoerythrophyllum. As originally described by Chen, Bellibarbula was separated from other genera in the Barbuleae by the ovate-lanceolate leaves, undifferentiated or scarcely differentiated leaf bases, papillose distal laminal cells, eperistomate capsule and convolute-sheathing perichaetial leaves. It is separable from Barbula by the color reaction to KOH of the distal laminal cells: yellow or orange in Barbula, red to brick-red in Bellibarbula. The sinuose costa in the distal part of the leaf differentiates Bellibarbula from Bryoerythrophyllum.

Selected References

None.

... more about "Bellibarbula"
semielliptic +  and semicircular +
of 1-2 rows +  and differentiated +
Acuminate (?) +  and Acute (?) +
Patricia M. Eckel +
P. C. Chen +
reniform +  and rounded +
differentiated +
quadrate +  and subrectangular +
papillose +  and smooth +
usually slightly wider +
differentiated +
Pottiaceae tribe Barbuleae +
obovoid +
mitrate +  and cucullate +
cleistocarpous +  and stegocarpous +
monoicous +, dioicous +  and sexual +
flat to bulging +
vesiculose +  and thick-walled +
elongate-rhomboid +  and elongate +
tomentose +  and bare +
thick-walled +  and 1-stratose +
dioicous +, sexual +  and asexual +
e North America +, Mexico +, South America (Bolivia) +, Asia (China) +, Asia (the Himalayas) +  and Asia (India) +
differentiated +
Latin bellus, beautiful, and genus Barbula +
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 +
ovatelanceolate +  and triangular +
reduced +
dentate +  and entire +
short-conic;short-rostrate +
photosynthetic +
4 +  and 6 +
2-fid +  and sharp +
lateral +  and terminal +
red +  and laminal +
lateral +  and terminal +
red +, orange +  and yellow +
consisting of 16 mostly 2 times cleft spiculose striate or papillose lanceolate teeth , , , , +  and rudimentary +
straight +
superficially flat;subconvex +
elongate +
2 +  and 1 +
rounded-triangular +  and rounded-pentagonal +
0.6 cm6 mm <br />0.006 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Bellibarbula +
Pottiaceae subfam. Barbuloideae +
ovoid;cylindric +
red +  and yellow +
thin +  and evenly thickened +
stemless +  and perigoniate +
yellow-green;redbrown distally +
occasionally smaller than the perichaetiate +