Flora of North America species comparison

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Bartramia pomiformis

apple moss bartramia, apple-moss, bartramia moss
Habit Plants in lax to dense tufts, green to glaucous, sometimes yellowish green.
Stems

0.5–8 cm.
Leaves

flexuose to crisped when dry, laxly erect to erect-spreading when moist, narrowly lanceolate to linear, 4–7 mm;

base scarcely sheathing, shoulders well developed, firm;

margins revolute, coarsely toothed distally, teeth paired;

apex subulate;

costa excurrent, prominent, distal abaxial surface rough;

basal laminal cell walls thin;

medial and distal cells 4–15 × 4–8 µm, prorulae high.
Seta

0.5–2.5 cm, flexuose.
Sexual condition

autoicous or synoicous.
Capsule

inclined, globose to ovoid, asymmetric, 1.5–2.5 mm;

operculum conic convex;

peristome double;

exostome teeth 375–450 µm, granulose-papillose throughout;

endostome basal membrane high, segments somewhat shorter than teeth, finely seriate-papillose, cilia rudimentary.
Spores

20–26 µm.

Bartramia pomiformis
Phenology Capsules mature Feb–Nov.
Habitat Soil, rock, base of trees, downed trunks, moist shady forests
Elevation low to moderate elevations (0-1100 m) (low to moderate elevations (0-3600 ft))
Distribution
from FNA
AK; AL; AR; CA; CT; DC; DE; GA; IA; ID; IL; IN; KS; KY; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NY; OH; OK; OR; PA; RI; SC; SD; TN; VA; VT; WA; WI; WV; BC; NB; NL; NS; NU; ON; QC; SK; c Asia; n Africa; e Asia; Greenland; n Asia; Europe; s South America (Tierra del Fuego); Atlantic Islands (Madeira)
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Discussion

Bartramia pomiformis can be distinguished from the similar B. halleriana by the combination in the former of narrowly lanceolate to linear-lanceolate leaves, often crisped or flexuose when dry, together with the elongate seta that usually lofts the capsule above the foliage.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 28, p. 102.
Parent taxa Bartramiaceae > Bartramia
Sibling taxa
B. brevifolia, B. halleriana, B. ithyphylla, B. potosica, B. stricta, B. subulata
Synonyms B. circinnulata, B. crispa, B. glaucoviridis
Name authority Hedwig: Sp. Musc. Frond., 164. (1801)
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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