747 
PL cell.foL 14. MUSCI. 366. Orthotrichum. 
8. Orthotrichum rivulare. River Iristle-moss. 
Stems long, much branched; leaves broad, lanceolate, 
blunt; capsules sessile; peristome with 16 slender cilise ; 
calyptra smooth. 
Orthotrichum rivulare, Turner M. Hib . 06 ; Engl. Bot. 2188. 
On rocks and in streams. 
9. Orthotrichum striatum. Streaked Iristle-moss, 
Stem long, branched ; leaves lanceolate, spreading, 
slightly twisted when dry ; capsule sessile, ovate, smooth; 
peristome with 16 irregular strung-bead-like cilise; calyptra 
rather hairy. 
Polytrichum cnpsulis subrotundis, pediculis brevissimis insidentibus, 
calyptra striata, arboreum ramosum majus, Raii Syn. 91, 4. 
Bryum striatum, Lin. S. P. 1579. 
Polytrichum striatum, Huds. Angl. 471. 
Weissia striata, Sibthorp Ox. 287. 
Orthotrichum striatum, Hertw. S. Muse. 163 ; Engl. Bot. 2187. 
On trees. 
Cilice have frequently other joints attached to the side of 
the real ones. 
10. Orthotrichum Lyellii. LyelVs Iris tie-moss. 
Stem long, much branched ; leaves long, linear, lanceo- 
late, bent back, open, much crisped when dry; capsule 
oblong, streaked ; cilice 16, rather broad, distinctly jointed ; 
calyptra very hairy. 
Orthotrichum Lyellii, Hooker fy Taylor Muse. 76. 
On trees. 
XXV. 367. NECKERA. Hedwig. Necker. 
Capside valveless, peduncled ; peduncles lateral ; peristome 
double; outer of 16 teeth; inner of 16 cilise, connected at 
the very base only by a short membrane; calyptra halved. 
-—Leaves 2-rowed. 
1. Necker a pumila. Dwarf Necker. 
Leaves ovate, pointed, slightly concave, edges turned 
over ; peduncles scarcely longer than the perichetial leaves ; 
capsule oblong, ovate. 
Fontinalis pennata, Hudson Angl. 468. 
Neckera pumila, Hedw. S. Muse. 205 ; Engl. Bot. 1443. 
Hypnum pennatum, Dickson Crypt. 1,5. 
On trees, and in woods. 
