Monographs Details:
Authority:
Gradstein, S. Robbert. 1994. Lejeuneaceae: Ptychantheae, Brachiolejeuneae. Fl. Neotrop. Monogr. 62: 216. (Published by NYBG Press)
Gradstein, S. Robbert. 1994. Lejeuneaceae: Ptychantheae, Brachiolejeuneae. Fl. Neotrop. Monogr. 62: 216. (Published by NYBG Press)
Family:
Lejeuneaceae
Lejeuneaceae
Synonyms:
Lejeunea hapalochroa Spruce, Odontolejeunea tocoriensis Steph., Odontolejeunea longispica A.Evans, Lejeunea decemdentata Spruce
Lejeunea hapalochroa Spruce, Odontolejeunea tocoriensis Steph., Odontolejeunea longispica A.Evans, Lejeunea decemdentata Spruce
Description:
Species Description - Dioicous. Plants to 2 cm long × 0.8-1.8 mm wide, glossy greenish to pale brown when dry. Branching Lejeunea-type, rarely Frullania-type. Stems 0.08-0.13 mm in diam., in cross section composed of ca. 10-12 epidermal cells surrounding 10-25 much smaller medullary cells. Leaves distant to subimbricate, crisped when dry, dorsal lobe ovate, 0.5-1.0 × 0.3-0.7 mm, apex obtuse, margins plane, distally with 7-12 teeth, ventral margin sometimes untoothed, forming a more or less straight line with the keel; median cells ca. 20-40 µm, with small cordate or simple triangular trigones and l(-2) intermediate thickenings on longer cell walls; oil bodies (fide A. Schafer-Verwimp, pers, comm.) 7-15 per cell, fewer in leaf margin cells, finely segmented, 3-4 × 3-11 µm, ellipsoid to subglobose. Lobules ovate-triangular or almost rounded, small, sometimes reduced, l/5-l/3x lobe length, keel curved, free margin with l(-2) erect or incurved teeth, first teeth 1-2 cells long, second tooth one-celled or lacking. Underleaves distant, orbicular to transversely obovate, 0.15-0.3 mm in diam., 1.5-3× stem width, margins plane or slightly recurved, entire or bluntly crenulate, bases cuneate, short decurrent, neither folded nor auriculate, insertion line arched to 0.12 mm deep. Androecia as in the genus. Gynoecia: bract lobes slightly larger than leaves, margins with 4-12 teeth; bracteoles obovate, up to 0.5 mm long, margins entire or crenulate. Perianths with two dentate-ciliate lateral keels and one smooth ventral keel; beak 2-3 cells long, not recessed. Sporophyte as in the genus. Vegetative reproduction: cladia frequent, basal leaves acuminate, their margins with numerous small teeth.
Species Description - Dioicous. Plants to 2 cm long × 0.8-1.8 mm wide, glossy greenish to pale brown when dry. Branching Lejeunea-type, rarely Frullania-type. Stems 0.08-0.13 mm in diam., in cross section composed of ca. 10-12 epidermal cells surrounding 10-25 much smaller medullary cells. Leaves distant to subimbricate, crisped when dry, dorsal lobe ovate, 0.5-1.0 × 0.3-0.7 mm, apex obtuse, margins plane, distally with 7-12 teeth, ventral margin sometimes untoothed, forming a more or less straight line with the keel; median cells ca. 20-40 µm, with small cordate or simple triangular trigones and l(-2) intermediate thickenings on longer cell walls; oil bodies (fide A. Schafer-Verwimp, pers, comm.) 7-15 per cell, fewer in leaf margin cells, finely segmented, 3-4 × 3-11 µm, ellipsoid to subglobose. Lobules ovate-triangular or almost rounded, small, sometimes reduced, l/5-l/3x lobe length, keel curved, free margin with l(-2) erect or incurved teeth, first teeth 1-2 cells long, second tooth one-celled or lacking. Underleaves distant, orbicular to transversely obovate, 0.15-0.3 mm in diam., 1.5-3× stem width, margins plane or slightly recurved, entire or bluntly crenulate, bases cuneate, short decurrent, neither folded nor auriculate, insertion line arched to 0.12 mm deep. Androecia as in the genus. Gynoecia: bract lobes slightly larger than leaves, margins with 4-12 teeth; bracteoles obovate, up to 0.5 mm long, margins entire or crenulate. Perianths with two dentate-ciliate lateral keels and one smooth ventral keel; beak 2-3 cells long, not recessed. Sporophyte as in the genus. Vegetative reproduction: cladia frequent, basal leaves acuminate, their margins with numerous small teeth.
Discussion:
Odontolejeunea decemdentata is the smallest species of the genus and stands out by its pale color, segmented oil bodies, entire underleaves without auricles, and by its few (1-2) lobule teeth.
Odontolejeunea decemdentata is the smallest species of the genus and stands out by its pale color, segmented oil bodies, entire underleaves without auricles, and by its few (1-2) lobule teeth.
Illustration: Teeuwen, Nova Hedwigia 48:13, Pl. 1.1989.
Distribution:
Costa Rica South America| Alajuela Costa Rica Central America| Guanacaste Costa Rica Central America| Jamaica South America| Portland Jamaica South America| Colombia South America| Cundinamarca Colombia South America| Valle Colombia South America| Venezuela South America| Aragua Venezuela South America| Zulia Venezuela South America| French Guiana South America| Ecuador South America| Azuay Ecuador South America| Chimborazo Ecuador South America| Los Ríos Ecuador South America| Napo Ecuador South America| Pastaza Ecuador South America| Santiago-Zamora Ecuador South America| Peru South America| Brazil South America| Rio de Janeiro Brazil South America| Bolivia South America| Cochabamba Bolivia South America|
Costa Rica South America| Alajuela Costa Rica Central America| Guanacaste Costa Rica Central America| Jamaica South America| Portland Jamaica South America| Colombia South America| Cundinamarca Colombia South America| Valle Colombia South America| Venezuela South America| Aragua Venezuela South America| Zulia Venezuela South America| French Guiana South America| Ecuador South America| Azuay Ecuador South America| Chimborazo Ecuador South America| Los Ríos Ecuador South America| Napo Ecuador South America| Pastaza Ecuador South America| Santiago-Zamora Ecuador South America| Peru South America| Brazil South America| Rio de Janeiro Brazil South America| Bolivia South America| Cochabamba Bolivia South America|