Hypnum. MUSCI. 



processes nearly equalling the teeth ; ciliolse very short, solitary. Pacif. E. Rep. 

 iv. 190, t. 10. 



Ou the ground, near Los Angeles, Bigelow. 



4. H. leuconeurum, Sulliv. & Lesq. Low, rather densely cespitose, irregularly 

 branched or the short branchlets subpinnately arranged, yellowish green and shining : 

 leaves erect-spreading, ovate-lanceolate, narrowly acuminate, serrulate, costate to the 

 apex, papillose, areolation minute, ovate-rhombic above, shorter and equilateral 

 below ; perichaetial leaves nerveless, with a long subflexuous dentate acumination : 

 flowers dioecious : capsule horizontal on a curved reddish pedicel, ovate-oblong with 

 thick abrupt collum ; operculum acute ; annulus simple : processes equalling the 

 teeth ; ciliolee much shorter, in threes. Muse. Am.-Bor. Exsicc. 2 ed. n. 407 b ; 

 Lesq. in Mem. Calif. Acad. i. 31. Thuidium leuconeurum, Lesq. ; Sulliv. Icon. 

 Muse. Suppl. 104, t. 80. 



On trunks of Qucrcus agrifolia and on moist shaded hillsides, Oakland, Bolandcr. This species, 

 together with the rest of the group and some other species, are referred by Lesquereux, 1. c., to 

 the section Thuidium (genus Thuidium of Schimper), from which they all seem to differ, however, 

 in their steins not villous and without paraphyllia, the leaves homomorphous and rarely at all 

 decurrent, the dissimilar areolation, and the fewer and mostly shorter ciliolaa. The only western 

 species nearly conforming to Thuidium in most of these respects is H. BI.ANDOWII, Web. & Mohr 

 (T. Blandoicii, Bruch & Schimp. Bryol. Eur. t. 486), collected by Lyall at Fort Colville. This 

 has a simply pinnate densely villous erect stem, the stem-leaves broadly ovate or subcordate, long- 

 papillose on the back and villous at base, plicate, with rather loose elongated areolation, the 

 branch-leaves ovate-acuminate : capsule oblong, strongly curved on a smooth pedicel 2 inches 

 long ; operculum acute. 



2. Stems mostly prostrate : leaves smooth and shining, scarious, erect or spread- 

 ing every way (or complanate in THAMNIUM), costate to the middle or rarely 

 nearly to the apex. 



* Opercidum short-conic, often apiculate. 



H- Branching pinnate or sometimes irregular: leaves plicate ; areolation narrowly 

 linear : flowers dioecious (male plants often parasitic on the female). CAMPTO- 

 THECIUM. (Camptolhecium, Schimp.) 



H- Pedicels rough. 



5. H. lutescens, Huds. Stem suberect, irregularly branched or subpinnate, 

 3 inches high or more : leaves long-lanceolate, acuminate, strict and rather rigid, 

 plicate-striate, costa ceasing below the minutely serrate apex : capsule oblong-cylin- 

 dric, slightly cernuous, subarcuate, brownish ; operculum acute-conic. Hedw. Muse. 

 Frond, iv, t. 16; Engl. Bot. t. 1301 ; Wilson, Bryol. Brit. t. 25; Berkeley, Brit. 

 Moss. t. 5, fig. 2. Camptothecium lutescens, Bruch & Schimp. 1. c., t. 558. 



California (Coulter) ; Victoria, Oregon (Bolander) ; Vancouver Island (Lyall) ; also collected 

 by Douglas. European. 



6. H. Nuttallii, Wils. Prostrate, broadly cespitose, bright yellow ; steins 3 to 

 5 inches long, rather sparingly divided, pinnately branched, the numerous crowded 

 branchlets 3 to 5 lines long, spreading or secund : leaves erect-spreading, strict, nar- 

 rowly oblong-lanceolate, acuminate, more or less sulcate-striate, serrate, margin re- 

 curved, costa nearly reaching the apex, areolation very long and narrow : pericheetial 

 leaves filiform-attenuate, obsoletely costate : capsule long-cylindric, erectish, curved, 

 on a very short rough pedicel ; operculum short-beaked ; annulus narrow : processes 

 equalling the teeth ; ciliolse very short. Bryol. Brit. 334, 339, in note ; Sulliv. & 

 Lesq. I.e., n. 338 b (2 ed. n. 514); Sulliv. Icon." Muse. 211, t. 128. Leskea California, 

 Hampe, Linnsea, xxx. 460. Camptothecium Nuttallii, Bruch & Schimp. 1. c. vi. 6. 



Var. stoloniferum, Lesq. Branches elongated, filiform, crowded : capsule 

 shorter and more slender. Mem. Calif. Acad. i. 32. 



Common on trees (Bigelow, Bauer, Bolander} ; Vancouver Island, DougJas, Lyall. 



