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Andreaea rupestris Hedwig.
Andreaea alpestris; Andreaea papillosa; Andreaea parvifolia; Andreaea rupestris var acuminata; Andreaea rupestris var alpestris; Andreaea rupestris var papillosa; Andreaea rupestris var sparsifolia; Andreaea sparsifolia var sublaevis

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Andreaea rupestris
© Copyright Malcolm Storey 2011-2118 · 3
Andreaea rupestris

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Andreaea rupestris
© Copyright Malcolm Storey 2011-2118 · 3
Andreaea rupestris
Andreaea rupestris
© Copyright Malcolm Storey 2011-2118 · 3
Andreaea rupestris

Andreaea rupestris
© Copyright Malcolm Storey 2011-2118 · 3
Andreaea rupestris
Andreaea rupestris
© Copyright Malcolm Storey 2011-2118 · 3
Andreaea rupestris

Andreaea rupestris
© Copyright Malcolm Storey 2011-2118 · 3
Andreaea rupestris
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FNA Vol. 27 Page 103, 104 , 105, 106 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 27 | Andreaeaceae | Andreaea

4. Andreaea rupestris Hedwig, Sp. Musc. Frond. 47, plate 7, fig. 2g-o. 1801.

Andreaea alpestris (Thedenius) Schimper; A. papillosa Lindberg; A. parvifolia Müller Hal.; A. rupestris var. acuminata (Schimper) Sharp; A. rupestris var. alpestris (Thedenius) Sharp; A. rupestris var. papillosa (Lindberg) Podpera; A. rupestris var. sparsifolia (Zetterstedt) Sharp; A. sparsifolia var. sublaevis Kindberg

Plants reddish black, black or greenish brown. Leaves curved or secund to straight, wide-spreading to squarrose, short-lanceolate, widest proximally, apex oblique or symmetric; costa absent; leaf margins entire; basal laminal cells short- to long-rectangular, marginal cells rounded-quadrate to short-rectangular, walls sometimes thickened, usually pitted, straight; medial laminal cells quadrate to short-rectangular, 1-stratose or occasionally 2-stratose in patches, lumens rounded, rectangular or irregularly stellate; laminal papillae usually present, commonly large, whitish. Sexual condition cladautoicous or autoicous; perichaetial leaves differentiated, convolute-sheathing. Spores 20-32(-50) µm.

Neutral to acidic boulders, cliffs and walls, generally wet sites; low to moderate elevations; Greenland; Nunavut, Que.; Alaska; nw Europe.

Andreaea rupestris is a species of many morphological variants, more commonly identified by simple elimination. It is similar to A. obovata , but is distinguished by the leaves generally curving or secund, short-lanceolate, widest proximally, apices oblique or symmetric. The degree of expression of laminal papillae is variable on the same plant. Plants identified as A. alpestris , said to differ by straight leaves with low papillae, is probably best considered a high elevation form.

Updated: 2021-06-19 10:38:39 gmt
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