Arctoa fulvella

(Dickson) Bruch & Schimper

Bryol. Europ. 1: 156. 1846,.

Basionym: Bryum fulvellum Dickson Fasc. Fl. Crypt. Brit. 4: 10, plate 11, fig. 1. 1801
Synonyms: Dicranum fulvellum Smith
Treatment appears in FNA Volume 27. Treatment on page 363. Mentioned on page 362.

Plants small, in compact, moderately shiny, yellowbrown or green tufts. Stems (0.5–) 1–2 (–4) cm. Leaves erect or falcate-secund, lanceolate, subulate, 2–3 mm; costa 30–60 µm wide at base, very long-excurrent, rough near tip; distal laminal cells mostly rectangular (2–5:1), incrassate; basal laminal cells elongate, alar cells differentiated. Seta long, (3–) 4–6 (–7) mm. Capsule exserted, slightly curved, obscurely to distinctly ribbed when dry, annulus of 2 rows of cells; peristome red, spreading outward when dry. Spores 16–28 µm.


Phenology: Capsules mature summer.
Habitat: Siliceous rock or soil
Elevation: moderate to high elevations

Distribution

Greenland, Alta., B.C., N.B., Nfld. and Labr. (Nfld.), N.W.T., N.S., Que., Yukon, Alaska, Idaho, Maine, Mont., N.H., N.Y., Oreg., Wash., Europe, Asia

Discussion

Arctoa fulvella occurs frequently on mountain summits and exposed ledges, and is often found in late snowbed communities with Kiaeria falcata. Superficially it resembles Blindia acuta, which is distinguished by enlarged, orange alar cells and dark brown peristome teeth that do not flare conspicuously outward. Dicranella heteromalla vegetatively resembles A. fulvella, but its inclined capsules and boreal rather than alpine habitat will separate them. The long-excurrent costa distinguishes this species from other Arctoa species.

Selected References

None.

Lower Taxa

None.
... more about "Arctoa fulvella"
persistent +  and deciduous +
Steven G. Newmaster +
(Dickson) Bruch & Schimper +
short to long +
Bryum fulvellum +
pseudomonoicous +, dioicous +, autoicous +  and sexual +
reproduction +  and asexual +
cucullate +
constricted +
papillose +  and mammillose +
inflated +
differentiated +
long-excurrent +
30um;60um +
mammillose +  and smooth +
Greenland +, Alta. +, B.C. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.W.T. +, N.S. +, Que. +, Yukon +, Alaska +, Idaho +, Maine +, Mont. +, N.H. +, N.Y. +, Oreg. +, Wash. +, Europe +  and Asia +
moderate to high elevations +
Siliceous rock or soil +
falcate-secund +
subulate +  and lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
serrulate +  and entire +
nonpitted +  and pitted +
toothed +  and forked +
autoicous +  and sexual +
Capsules mature summer. +
undifferentiated +
Bryol. Europ. +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
flexuose +  and straight +
cygneous +  and elongate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
spheric +
simple or;dichotomously irregularly branched +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
differentiated +
superficial +
Dicranum fulvellum +
Arctoa fulvella +
species +
deciduous +
lanceolate +
green +  and yellowbrown +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
dark green +  and yellowish-brown +