Echinophyllum sachalinense

(Lindberg) T. J. O'Brien

Bryologist 103: 513. 2000.

Illustrated
Basionym: Thuidium sachalinense Lindberg Contr. Fl. Crypt. As., 244. 1873 (as Thuyidium)
Synonyms: Bryochenea sachalinensis (Lindberg) C. H. Gao & K. C. Chang Helodium sachalinense (Lindberg) Brotherus
Treatment appears in FNA Volume 28. Treatment on page 324.

Stems with branches spirally attached; paraphyllia many on stems and branches; axillary hairs basal-cell 1. Stem-leaves deeply 2–4-plicate; acumen flexuose or circinate; costa single, ending before or at base of acumen, abaxial surface with paraphyllia attached along base, smooth or irregularly serrate distally; proximal laminal cells irregular, oblong or subquadrate, walls incrassate, sporadically porose; medial cell-walls incrassate. Branch leaves with margins plane or recurved proximally, plane and serrate or serrulate distally; costa single, 1/2–2/3 leaf length. Perichaetia outer leaves with margins entire proximally, serrate at base of acumen, apex abruptly narrowed, finely acuminate, flexuose, distal laminal cells smooth, walls sporadically porose. Seta twisted when dry.


Phenology: Capsule maturity unknown.
Habitat: Humus over soil or rock, bark of conifers and hardwoods, rotting logs, moist coniferous forest, mesic tundra
Elevation: low to moderate elevations

Distribution

V28 505-distribution-map.gif

B.C., Alaska, Asia (e China), Asia (Japan), Asia (Korea), Asia (e Russia)

Discussion

Echinophyllum sachalinense is best distinguished from similar species by the combination of stem leaves with slender, recurved apices; coarsely serrate-dentate leaf margins often with cilia attached proximally; one massive papilla per laminal cell; branch leaves with a smooth, lanceolate apical cell; paraphyllia with smooth, lanceolate apical cells; and lanceolate, papillose pseudoparaphyllia. This species is known from five localities in North America along the northern Pacific Rim, all discovered since 1992. Specimens from four of the localities are reported by T. J. O’Brien and D. G. Horton (2000); a fifth locality is near Mother Goose Lake in Alaska (W. B. Schofield, pers. comm.).

Selected References

None.

Lower Taxa

None.
subulate +
flexuose +
autoicous +, dioicous +, sexual +  and asexual +
paraphyllialike +
Terry J. O’Brien +
(Lindberg) T. J. O'Brien +
Thuidium sachalinense +
serrulate +  and serrate +
catenulate +  and overlapping +
cucullate +
strongly inclined;horizontal +
cylindric +
papillose +  and smooth +
differentiated +
appendiculate +
nodulose +
slender +
serrate +  and smooth +
1/2 +  and 2/3 +
B.C. +, Alaska +, Asia (e China) +, Asia (Japan) +, Asia (Korea) +  and Asia (e Russia) +
low to moderate elevations +
Humus over soil or rock, bark of conifers and hardwoods, rotting logs, moist coniferous forest, mesic tundra +
oblong-lanceolate +
serrate +  and ciliate +
apiculate +, blunt +, rostellate-rostrate +  and conic +
blunt-conic +
unbranched +  and branched +
lanceolate +  and filiform +
Capsule maturity unknown. +
subquadrate +  and oblong +
ovatelanceolate +  and lanceolate +
papillose +  and smooth +
reddish orange +
elongate +
2 cm20 mm <br />0.02 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
Illustrated +
globose +
plicate-sulcate +
elliptic +  and ovate +
not stipitate +
2-pinnate +  and 1-pinnate +
spreading +, erect +  and creeping +
Bryochenea sachalinensis +  and Helodium sachalinense +
Echinophyllum sachalinense +
Echinophyllum +
species +
dioicous +  and sexual +
incrassate +
thickening +
yellowish +  and green +
small;medium-sized +