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FNA | Family List | FNA Vol. 27 | Seligeriaceae

1. Seligeria Bruch & Schimper, Bryol. Europ. 2: 7. 1856.

[For Ignaz Seliger, 1752-1812, Silesian pastor]

Dale H. Vitt

Plants of calcareous rocks, light green to black. Alar cells not differentiated to colored and enlarged. Sexual condition autoicous. Capsule smooth; annulus ill-formed; peristome teeth smooth. Calyptra cucullate.

Species ca. 20 (13 in the flora): North America, Europe, Asia, Pacific Islands (New Zealand), Australia.

Seligeria is characterized as tiny acrocarpous plants, with more or less ovate, smooth capsules and linear-lanceolate leaves, and a calcareous substrate as habitat. Seligeria trifaria (Bridel) Lindberg is excluded.


Vitt, D. H. 1976. The genus Seligeria in North America. Lindbergia 3: 241-275.

1 Capsule without a peristome, margins of leaf in proximal 1/3 denticulate.   7 Seligeria donniana
+ Capsule with a peristome, margins subentire to entire   (2)
2 (1) Spores 17-30 µm   (3)
+ Spores 10-16 µm   (5)
3 (2) Spores (20-)23-30 µm; peristome of 16 reduced teeth, each of 5-8 cells.   8 Seligeria oelandica
+ Spores 17-25(-27) µm; peristome of 16 fully developed teeth   (4)
4 (3) Capsule ovate, sometimes with flaring mouth when old and dry; seta 2-3 mm; columella short, not persistent, not attached to opercula; leaves spreading- recurved, evenly spaced around stem, not trifarious   9 Seligeria polaris
+ Capsule turbinate when old and dry; seta 1-1.5 mm; columella elongate with opercula tending to remain attached; leaves often trifarious.   13 Seligeria tristichoides
5 (2) Costa excurrent, filling subulate apex   (6)
+ Costa (except in perichaetial leaves) ending just before apex, lamina present into apex   (9)
6 (5) Seta curved 30-90° when wet.   11 Seligeria recurvata
+ Seta straight when wet   (7)
7 (6) Leaves wiry, stiffly flexuose, long-subulate, light green to dull-green; cells of leaf lamina longer than broad, pellucid; seta less than 1 mm; capsule turbinate when old, emergent.   5 Seligeria careyana
+ Leaves recurved-twisted to stiffly erect, stoutly subulate from a wide base, dark-green to black; cells of distal leaf lamina usually as wide as long, opaque; seta greater than 1 mm; capsule ± ovate to oblong when old, emergent to exserted   (8)
8 (7) Leaves stiffly-erect when dry; plants dark-green, gregarious; spores 14-16 µm; capsule contracted to seta through a wrinkled neck when old; eastern North America.   3 Seligeria calcarea
+ Leaves twisted when dry; plants blackish, forming turfs; spores 10-14 µm; capsule ± sharply contracted to seta when old; western North America.   12 Seligeria subimmersa
9 (5) Plants olive green to dark green; cells of distal leaf lamina ± opaque, usually as broad as long; leaves oblong to lanceolate; capsule ovate to oblong, not clearly widest at mouth   (10)
+ Plants light green; cells of leaf lamina pellucid, tending to be longer than broad; vegetative leaves linear, sometimes ± subulate; capsule turbinate to obovate, widest at mouth   (11)
10 (9) Leaves curved and loosely arranged when dry, narrowed to obtuse, plane, erect acumen; perichaetial leaves usually not clasping, similar to vegetative leaves; capsule wider at middle than at mouth; seta thin, curved 30-90° when wet.   4 Seligeria campylopoda
+ Leaves stiffly erect when dry, narrowed to an obtuse, incurved, channeled acumen; perichaetial leaves clasping and rapidly narrowed to stout subula; capsule ± as wide at middle as at mouth; seta ± thick, straight to slightly curved when wet.   6 Seligeria diversifolia
11 (9) Perichaetial leaves subulate from an ovate, sheathing base, abruptly differentiated from vegetative leaves.   1 Seligeria acutifolia
+ Perichaetial and vegetative leaves similar, sometimes distal leaves larger, but always similar to proximal leaves in shape   (12)
12 (11) Leaves short, ligulate; apex broadly acute to obtuse; capsule ± pyriform when old; peristome large.   2 Seligeria brevifolia
+ Leaves long, subulate; apex narrowly acute; capsule obovate to pyriform when old; peristome small.   10 Seligeria pusilla

  • List of lower taxa


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