

G R I M M I A. 



HAB. On rocks by the sea-shore. 



Proteus-like as is Gr. apocarpa, we cannot agree with 

 Wahlenberg in supposing this to belong to any one of its 

 varieties. It lias a short and peculiarly tufted mode of growth 

 like that of Gr. pulvinata ; its leaves are narrower than 

 those of Gr. apocarpa, resembling in shape those of Gr. 

 ovata, but are more erect than either, never hair-pointed, 

 and decidedly crisped when dry. The perichaetial leaves too 

 afford, we think, additional characters ; for they are long, 

 narrow, concealing the fruit, and have a re in ark ably brown, 

 strong, excurrenl nerve. The peristome in the last as in 

 the present species, is sometimes entire; but more frequently 

 irregularly perforated. 



*.* Fruitstalks longer than the leaves. 

 f Fruitstalks curved. 



3. Gr. saxicola'y stems scarcely any; leaves lineari-subulate, 



crisped when dry; capsule ovate; fruitstalks geniculate ; 

 lid rostrate, straight. (TAB. XIII.) 



Dicranum saxicola. Mohr. Grimmia geniculata. Schwaegr. SuppL 

 t.22. 



HAB. On sand-rocks in Sussex, Mr. Borrer. On granite 

 rocks in the Dublin mountains. 



Mohr does not appear to have seen the calyptra of this 

 species, which is mitriform as in the genus Grimmia, mul- 

 tifid at the base, and adhering so closely to the lid as not 

 to be separated without it from the capsule. The stems are 

 shorter than in any of the British GrimmuB; and this cir- 

 cumstance, together with the general shape of the leaves 

 and minute size of the whole plant, render^ it difficult to be 

 distinguished at first sight from Weissia trichoides, among 

 which Mr. Borrer finds it growing. It has a still closer 

 affinity with Weissia recuruata, especially in the bent fruit- 

 stalks; but this last has them curved, not geniculate, and 

 leaves shorter and more setaceous. 



4. Gr. pulvinata ; stems short, pulvinate ; leaves narrow-ellip- 



tical, their margins recurved, points diaphanous, piliform ; 

 capsule ovate, striated; fruitstalks curved, lid conical, acu- 

 minate, (TAB. XIII.) 



Gr. pulvinata. Engl Bot. t. 1728. Hooker in Fl. Lond. ed. 2. (with 

 a figure.) Dicranum pulvinatum. Swartz. Turn. Muse. Hib.p. 78. 

 Moug. et NestL n. 124. Fissidens pulvinatus. Hedw. Sp. Muse. t. 40. 

 Dill. Muse. t. 50. / 65. 



HAB. On walls and rocks. 



