Haplocladium microphyllum

(Hedwig) Brotherus in H. G. A. Engler and K. Prantl
in H. G. A. Engler and K. Prantl, Nat. Pfla n zenfam. 229[I,3]: 1007. 1907.
Basionyms: Hypnum microphyllum Hedwig Sp. Musc. Frond., 269, plate 69, figs. 1 – 4. 1801
Treatment appears in FNA Volume 28. Treatment on page 345. Mentioned on page 346.

Plants medium-sized. Stems somewhat irregularly pinnate; paraphyllia few, seldom many, filamentous, infrequently branched. Stem leaves erect, somewhat distant, broadly ovate to triangular, 2-plicate basally, 0.8–1.5 mm; margins plane, somewhat recurved basally, serrulate; costa ending in acumen or subpercurrent. Branch leaves somewhat distant, ovate, 0.5–0.7 mm; apex acute to acuminate; alar cells quadrate; medial laminal cells subquadrate, subrhombic, or very short-rectangular, smooth to 1-papillose over lumen or shifted distally, walls somewhat thick. Capsule inclined to horizontal. Spores 8–12 µm, essentially smooth.


Phenology: Capsules mature year-round.
Habitat: Damp wood, rock, humus, soil in woodlands
Elevation: low to high elevations (0-2500 m)

Distribution

V28 536-distribution-map.gif

Alta., B.C., Man., Ont., Que., Ala., Ariz., Ark., Del., Fla., Ga., Ill., Ind., Iowa, Kans., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.Mex., N.Y., N.C., N.Dak., Ohio, Oreg., Pa., S.C., Tenn., Tex., Vt., Va., Wash., W.Va., Wis., Mexico, West Indies, South America, Eurasia.

Discussion

Haplocladium microphyllum is the most commonly encountered species of the genus in North America, and is recognized by the frequently plicate base of the stem leaves, somewhat distant leaves when compared to the other species, and filamentous, little-branched paraphyllia that may be few and scattered or occasionally more common. Paraphyllia of H. angustifolium and H. virginianum are much more abundant, frequently branched and more commonly two or more rows of cells wide. The stem leaves of H. microphyllum are weakly decurrent with frequently flexuose acumina when dry; the branch leaves have short-rectangular, smooth, frequently reddish proximal laminal cells; and the capsules are 1.5–2 mm.

Selected References

None.

Lower Taxa

None.

... more about "Haplocladium microphyllum"
Robert E. Magill +
(Hedwig) Brotherus in H. G. A. Engler and K. Prantl +
Hypnum microphyllum +
Alta. +, B.C. +, Man. +, Ont. +, Que. +, Ala. +, Ariz. +, Ark. +, Del. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.Mex. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Oreg. +, Pa. +, S.C. +, Tenn. +, Tex. +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Mexico +, West Indies +, South America +  and Eurasia. +
low to high elevations (0-2500 m) +
Damp wood, rock, humus, soil in woodlands +
Capsules mature year-round. +
in H. G. A. Engler and K. Prantl, Nat. Pfla n zenfam. +
Haplocladium microphyllum +
Haplocladium +
species +