186 MOSSES AND LIVERWORTS. 



B. CHLORONOTOS, Schultz ; Bryol. Europ. Barb, monogr., p. 18, t. 4. Hab. same as the last. 



B. FALLAX, Hedw.; Bryol. Europ. Barb, monogr., p. 23, t. 9. Cajon Pass, Sierra Nevada; 

 also near San Francisco. 



B. BRACHTPIIYLLA, (sp. nov.) : dioica ; dense csespitosa ; caule fastigiato-ramosa ; foliis paten- 

 tibus ovatis breviter obtuse acuminatis toto margine recurvis usque ad apicem valido-costatis ; 

 capsula cylindracea erecta ; perist. dentibus vix contortis e membrana basilari perangusta ortis ; 

 annulo simplici ; operculo longe rostrato ; calyptra brevi. Near Benicia. Stems 8-12 lines 

 high, rooting profusely their entire length, and branching from below the floral apex. Leaves 

 dark, brownish green, of a firm, thick texture ; cellules minute sub-quadrate. Pedicel 5-7 lines 

 high, red. Teeth of the peristome contorted scarcely half-way round. This species has the habit 

 and aspect of a Trichostomum, particularly of T. rigidum, but each of the 32 teeth of its peris- 

 tome consists of two conjoined lines of tubular cellules, one placed before the other. (Plate II.) 



* B. VINEALIS, Brid.; Bryol. Europ. Barb, monogr., p. 24, t. 10. Oakland, opposite San Fran- 

 cisco ; also Sonora. 



B. SEMITORTA, (sp. nov.) : dioica ; laxe cajspitosa ; caulibus subsimplicibus basi solum radi- 

 cantibus apice congesto-foliosis ; foliis e basi erecta amplexante horizontalibus lineari-lanceolatis 

 concavis margine planis, costa solida cum apice desinente ; capsula cylindracea erecta aciculari- 

 ope-rculata, anguste annulata ; perist. dentibus longiusculis semitortis ; calyptra vix infra oper- 

 culum descendente. Growing with the last species, which it resembles, but has a shorter 

 calyptra, longer operculum, and less contorted peristome, with a narrower basal membrane. Its 

 leaves are more tufted at the top of the stems, squarrose-spreading, gradually tapering from 

 near their base, (not suddenly and long acuminated,) with margins nowhere recurved ; areola- 

 tion much larger. (Plate III.) 

 v B. CONVOLUTA, Hedw.; Bryol. Europ. Barb, monogr., p. 29, t. 16. Oakland, opposite San 



Francisco. 



^ B. VAHLIANA, Schultz; Bryol. Europ. Barb, monogr., p. 33, t. 18. Cajon Pass, Sierra Nevada; 

 also near Los Angeles. 



B. MARGINATA, Bryol. Europ. Barb, monogr., p. 33, t. 19. Dry rocky places, common. . 



B. SUBULATA, Brid.; Bryol. Europ. Barb, monogr., p. 36, t. 21 and 22. Dry ravines on Bill 

 Williams' fork of the Eio Colorado, near the mouth of Santa Maria creek. 



B. INERMIS, Mont.; Byrcl. Europ. Barb, monogr., Suppl. 3. At the base of a mountain fifty 

 miles west of the Rio Colorado in the line of the survey. 



B RUHALIS, Hedw.; Bryol. Europ. Barb, monogr., p. 43, t. 27. Cajon Pass, Sierra Nevada. 

 t B. MULLERI, Bryol. Europ. Barb, monogr., p. 44, t. 28. Various localities ; appears to be a 

 common species. 



POTTIEAE. 



POTTIA SDBSESSILIS. Bryol. Europ. Pott, monogr., p. 6, t. 1. Los Angeles. 

 V P. MINTJTULA, Bryol. Europ. Pott, monogr., p. 8, t. 3. Growing with the last. 

 \ 



OBTHOTRICHEAE. 



* ORTHOTRICHUM LYELLII. Hook.; Bryol. Europ. Orthot. monogr., p. 27, t. 16. Growing on 

 trees ; not uncommon in California and Oregon. Differs from the European form in its longer 

 and narrower leaves, more undulate on the margins, and more contorted when dry. The 

 articulated gland-like bodies, (Converfa Orthotrichi,) so frequent on the leaves of European 

 specimens, are seldom present on the Californian. It is the var. foliis longioribus siccitate 

 magis crispatis, (Brid. Bryol. Univ. 1,p. 728.) founded on specimens collected by Menzies at 

 Nootka Sound. 



In the collection are imperfect specimens of another Orthotrichum gathered at the crossing 

 of the Colorado, growing with Schistidium apocarpum, and also on rocks at Lereux's spring. 



