Callicladium haldaneanum

(Greville) H. A. Crum

Bryologist 74: 167. 1971 (as haldanianum).

Illustrated
Basionym: Hypnum haldaneanum Greville Ann. Lyceum Nat. Hist. New York 1: 275, plate 23 [center]. 1825 (as haldanianum)
Synonyms: Heterophyllium haldaneanum (Greville) M. Fleischer
Treatment appears in FNA Volume 28. Treatment on page 520.

Stems 3–8 cm; cortical cells small, walls thick; pseudoparaphyllia few; rhizoids few, in clusters just below leaf insertion, smooth. Leaves crowded, upturned-homomallous particularly near branch ends, scarcely altered on drying, concave, 1–2 × 0.5–0.8 mm; alar cells enlarged, yellow-brown, walls thick, region in several rows of cells, concave; basal laminal cell walls pitted; medial cells linear, 55–95 × 5–8 µm, walls moderately thick. Seta 1.5–3.2 cm, flexuose. Capsule reddish orange-brown, 1.7–3 mm, slightly wrinkled when dry; endostome segments not or narrowly perforated along keel. Spores 10–18 µm, yellow.


Phenology: Capsules mature fall–winter.
Habitat: Logs, stumps, conifer and hardwood forests, base of trees, soil, rock, forests
Elevation: low to moderate elevations

Distribution

V28 805-distribution-map.gif

B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Ariz., Conn., Del., Idaho, Ill., Ind., Iowa, Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., Vt., Va., W.Va., Wis., Europe, Asia.

Discussion

Callicladium haldaneanum grows in flat or loose extensive mats that are usually devoid of other species. The plants are distinguished by their concave leaves, short double costa, curved nearly erect capsules, and sword-shaped, shortly tapered, somewhat flattened branches.

Selected References

None.

Lower Taxa

None.
... more about "Callicladium haldaneanum"
Steven G. Newmaster +
(Greville) H. A. Crum +
Hypnum haldaneanum +
B.C. +, Man. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.S. +, Ont. +, P.E.I. +, Que. +, Ariz. +, Conn. +, Del. +, Idaho +, Ill. +, Ind. +, Iowa +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Mont. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, Vt. +, Va. +, W.Va. +, Wis. +, Europe +  and Asia. +
low to moderate elevations +
Logs, stumps, conifer and hardwood forests, base of trees, soil, rock, forests +
Capsules mature fall–winter. +
Illustrated +
Heterophyllium haldaneanum +
Callicladium haldaneanum +
Callicladium +
species +