TortulaCe^.J 227 [Pleufochcete. 



21. TOETUIi-A PRINCEPS De Not. 



Synoicous ; tall, rufescent. Leaves patent, broadly oblong-ovate, 

 obtuse, nerve excurrent in a slender spinulose arista. Caps, erect, 

 cylindric ; peristome with a long tube. (T. XXXIII, C.) 



Syn. — Tortula princeps De Not. in Mem. ac. Torin. xl, 288 (1838), Syllab. 170 (1838), Muse, 

 ital. I, 33, t. 13 (1862), Epil. bri. ital. 537 (1869). Lindb. de Tortulis 247 (1864). 

 HoBK. Syn. br. m. 70 (1873). 



Syntrichia Muelleri Bruch MSS. 



Barbula Muelleri Br. Schimp. Bry. eur. fasc. 13 — 16, Mon. 44, t. 28 (1842). Schimp. 

 Synops. 192 (i860), 2 ed. 232. HusN. Mouss. nord-ouest 87 (1873). Lesq. James 

 Mosses N. Amer. 133 (1884). 



Barbula princeps C. Muell. Synops. i, 636 (1849). 



Tortula Muelleri WiLS. Bry. br. 134, t. 44 (1855). Berk. Handb. br. m. 250 (1863). 



Syntrichia princeps Mitt. Journ. Lin. soc. i, Suppl. 39 (1859). Juratz. Laubm. 

 oesterr.-ung. 145 (1882). 



Synoicous and polygamous ; in tall lax ferruginous brown tufts. 

 Stems repeatedly interrupted by innovations, dense-leaved, radiculose 

 at base. Leaves imbricated patent, when dry appressed and complicate, 

 rosulate at apex of innovations, broadly oblong-ovate, obtuse, concave, 

 carinate in the middle, the margin subrevolute in the lower half; nerve 

 rufous, excurrent in a slender hyaline faintly spinulose arista ; cells at 

 base lax, pellucid, above quadrate, not opake, soft, papilloso-scabrous. 

 Caps, on a red flexuose seta, cylindraceous, arcuate, brown ; annulus of 

 a double series of cells, lid elongato-conic ; per. pale, the lower half 

 tubular, obscurely tessellated, teeth red. 



Male infl. mixed with the female or sometimes with female infl. also 

 on the same plant. 



Hab. — On rocks, walls and sometimes trunks of trees ; rare. Fr. 4 — 5. 



Menstrie glen, Ochils [Greville 1855). Blair AthoU (Miss Mcjnroy 1859) ! ! Craiglockart, 

 near Edinburgh (Dr. B. White 1865) ! Ram rocks, Ben Wyvis (Howie 1864) ! On the 

 Cruise, Brechin and Menmuir (Rev. M. Anderson i86g) ! Kirriemuir and Loch mill, 

 Forfar (Rev. J. Fergusson 1866) ! ! Raith, Kirkcaldy, Fife, on weathered trap (Ewing 

 1885) ! ! Deer park, Glenarm, Antrim and Benbulben, Shgo (Moore). 



This fine moss is easily known by its interrupted stem, and dense soft 

 broad rusty-coloured leaves ; its head quarters is the Mediterranean basin. 



6. PLEUROCH^TE Lindb. 



Oefv. af kong. Vet. akad. foerh. xxi, 253 (1864). 



Perichastia axillary, with the bracts accrescent inward. Fruit on 

 an elongated seta, resembling that of Tortula, lateral, peristome scarce 

 twisted. Leaves with a vaginant hyaline base,stellato-comant, serrate. 

 Inhabiting barren stony places, especially near the sea. Der. irXevpa 

 the side, x"'^*? ^ seta. 



