Flora of North America species comparison

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Trematodon longicollis

Trematodon laetevirens

long-neck moss, trematodon moss
Leaves

ovate-lanceolate to long-subulate from an ovate or obovate base, serrulate at apex;

costa percurrent or ending before the apex.

long-lanceolate, occasionally ovate-lanceolate, entire at apex;

costa percurrent or excurrect.
Seta

long, 10–30 mm.

short, ca. 10 mm.
Capsule

inclined, curved;

neck 2–3 times as long as urn when dry, long-cylindric, strumose at base;

peristome teeth 2-fid or irregularly perforate, not fragile, commonly persistent;

annulus compound, revoluble.

not inclined, straight to weakly curved;

neck about equal to the urn in length, cylindric or obovate, not strumose;

peristome teeth perforate medially and often split near apex, not fragile, commonly persistent;

annulus not seen.

Trematodon longicollis

Trematodon laetevirens
Phenology Capsules mature spring–summer. Capsules mature late summer–fall (Aug–Sep).
Habitat Soil, sand Soil, humus, crevices
Elevation low to moderate elevations moderate elevations
Distribution
from FNA
AL; AR; FL; GA; KY; LA; MD; MS; NC; NJ; OH; OK; PA; SC; TX; VA; Mexico; Central America; South America; West Indies (Cuba, Puerto Rico); Asia (China, Japan, Papua New Guinea); Pacific Islands (New Caledonia)
[WildflowerSearch map]
Greenland; n Europe (Norway, Sweden)
Discussion

Trematodon longicollis is much like T. ambiguus but differs in the relative lengths of capsule urn and neck when dry, and is clearly more southern in distribution. The peristome may occasionally adhere to the operculum on dehiscence and the capsule may then falsely appear gymnostomous.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 27, p. 438. FNA vol. 27, p. 439.
Parent taxa Bruchiaceae > Trematodon Bruchiaceae > Trematodon
Sibling taxa
T. ambiguus, T. boasii, T. brevicollis, T. laetevirens, T. montanus
T. ambiguus, T. boasii, T. brevicollis, T. longicollis, T. montanus
Synonyms T. ambiguus var. longicollis
Name authority Michaux: Fl. Bor.-Amer. 2: 289. (1803) Hakelier & J.-P. Frahm: Lindbergia 3: 223, fig. 1. (1976)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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