Grimmia lisae

De Notaris

Muscol. Ital. Spic., 15. 1837,.

Synonyms: Grimmia ancistrodes Durieu & Montagne Grimmia arcuatifolia Kindberg Grimmia californica Sullivant Grimmia canadensis Kindberg Grimmia flettii (Holzinger) Cardot
Treatment appears in FNA Volume 27. Treatment on page 253. Mentioned on page 227, 228, 249, 254, 257.

Plants in dense to loose tufts, olivaceous, brownish to blackish proximally. Stems 1–4 cm, central strand present. Leaves erect and appressed when dry, recurved to squarrose when moist, broadly lanceolate, tapering to an acute apex, 1.5–2.5 × 0.4–0.6 mm, keeled, margins recurved on one or both sides, awns absent to rather long, stout and denticulate, costa reniform, projecting on dorsal side, median layer of stereids present; basal juxtacostal laminal cells short-rectangular to occasionally elongate, straight to slightly sinuose, thin- to thick-walled; basal marginal laminal cells quadrate to short-rectangular, thickened transverse walls; medial laminal cells oblate to rounded-quadrate, straight, thick-walled; distal laminal cells 1-stratose with 2-stratose ridges, margins 2-stratose. Gemmae in clusters, multicellular, occasionally present in leaf axils. Sexual condition dioicous. Seta arcuate, 3–4.5 mm. Capsule occasionally present, exserted, ovoid, brown, shiny, weakly striate, exothecial cells thin-walled, annulus present, operculum rostrate, peristome teeth orange, fully-developed to irregularly cleft at apex, papillose. Calyptra mitrate.

Habitat: Dry acidic to basic rock
Elevation: low to moderate elevations (60-1000 m)


V27 349-distribution-map.gif

B.C., Calif., Oreg., Wash., Mexico, Eurasia, n Africa, Pacific Islands (Hawaii).


Grimmia lisae is a thermophilous species with a preference for subtropical coastal areas. In North America, it occurs along the west coast, from Vancouver Island south to Mexico. From that region, it has been described frequently as a new species. It is closely related to G. trichophylla, but is distinguished by somewhat shorter and broader leaves that are straight and appressed when dry and recurved to squarrose when moist, and by a reniform costa. Furthermore, it is characterized by a grass-green mid leaf areolation with small, rounded, frequently oblate cells with straight walls.

Selected References


Lower Taxa

... more about "Grimmia lisae"
Roxanne I. Hastings +  and Henk C. Greven +
De Notaris +
B.C. +, Calif. +, Oreg. +, Wash. +, Mexico +, Eurasia +, n Africa +  and Pacific Islands (Hawaii). +
low to moderate elevations (60-1000 m) +
Dry acidic to basic rock +
Muscol. Ital. Spic., +
Grimmia ancistrodes +, Grimmia arcuatifolia +, Grimmia californica +, Grimmia canadensis +  and Grimmia flettii +
Grimmia lisae +
Grimmia subg. Rhabdogrimmia +
species +