Plants 1–8 cm. Stem central strand present or absent. Leaves lanceolate to ovatelanceolate, keeled, costa projecting on abaxial side, leaf margin recurved on one or two sides; basal marginal cells not hyaline (except G. funalis and G. torquata); laminal cells usually 1-stratose distally (2–4 stratose in G. elatior and G. funalis) except at margin. Gemmae present or absent. Seta arcuate to cygneous when moist, centrally attached to capsule. Capsule cernuous or pendulous, striate to sulcate when dry and empty (smooth in G. attenuata), stomata present at base of capsule (absent in G. anomala). Calyptra mitrate to cucullate.

Distribution

North America, Mexico, Central America, South America, Eurasia, Africa, Pacific Islands, Australia

Discussion

Species 32 (17 in the flora).

Members of subg. Rhabdogrimmia are recognized by their lanceolate, thin, sharply keeled leaves with recurved margins, typically 1-stratose lamina with 1- or 2-stratose margins, and long, arcuate seta with striate to sulcate capsules. Most members occur on dry acidic rock.

Selected References

None.

deciduous +  and persistent +
well-defined +
differentiated +
Roxanne I. Hastings +  and Henk C. Greven +
Limpricht +
only rarely longer +
not papillose +
toothed +
sinuous +  and straight to sometimes +
sinuose-nodulose;quadrate;elongate +
oblate;elongate +
divided +
undifferentiated +
plicate +  and smooth +
less +  and 1/2 +
not papillose +
mitrate +  and cucullate +
small;medium +
pendulous +  and cernuous +
striate +  and smooth +
rarely ventricose ovoid;obloid rarely globose or cylindric +
thin +  and thick +
thick-walled +  and thin-walled +
quadrate +  and rectangular +
excurrent;percurrent;excurrent +
subpercurrent +
reniform +, elliptical +  and terete +
usually not markedly larger +
1-stratose +  and multistratose +
North America +, Mexico +, Central America +, South America +, Eurasia +, Africa +, Pacific Islands +  and Australia +
reproduction +  and asexual +
dioicous +, autoicous +  and sexual +
papillose +, mammillose +  and smooth +
specialized +
dioicous +, autoicous +  and sexual +
keeled +, lanceolate +  and ovatelanceolate +
1;multistratose +
recurved +  and incurved +
thick-walled +  and sinuose +
thick-walled +  and sinuose +
rostrate;conic;rostrate;conic;mammillate +
not +  and enlarged +
not +  and differentiated +
lanceolate;linear +
Laubm. Deutschl. +
straight +
sigmoid +  and arcuate +
papillose +  and smooth +
arcuate;cygneous +
short to long +
ornamented +  and smooth +
globose +
muticous;long-awned +
Dryptodon +  and Hydrogrimmia +
Grimmia subg. Rhabdogrimmia +
subgenus +
dark black-green;rusty-redbrown +