190 



MOSSES AND LIVERWORTS. 







matosa ; perichtetialibus lanceolatis lineali-acuminatis serratis evanidicostatis ; capsula ovali 

 subaequali inclinata collo distincto instructa ; pedicello cygneo crassiusculo ; operculo conico- 

 rostrato"; calyptra cuculliformi ; annulo composite ; perist. dentibus lineali-lanceolatis dense 

 articulatis, ciliis e membrana lata plicata lanceolatis carina hiantibus, ciliolis binis nodosis. 

 Valleys of the coast range of mountains north of and near to the bay of San Francisco. Plant 

 1-1^ inches high, growing in close mats. Stems rather stiff and elastic, with shining bright 

 green leaves, striate when dry. Pedicils aggregated, and arising mostly from near the base of 

 the larger branches. (Plate VIII.) 



This species appears to be near Leskea gymnopoda. as proposed by Taylor in London Journal 

 of Botany, 1846, p. 65, but that species is there described as having attenuated branches, ovate- 

 lanceolate, semi-costate leaves, aad a Leskeoid peristome. 



The description of Hypnum expansum Tayl. 1. c., p. 65, except in the less dendroid habit 

 subphmate ramification and gradually acuminated leaves, applies very well to our species; 

 both, however, of the Taylorean species just named are considered by Mr. Wilson, (than whom 

 there is no higher authority,) with authentic specimens before him, one and the same, and 

 identical with Neckera longirostris, Hook., of which we have authentic specimens, clearly show- 

 ing it to be quite distinct from Hypnum Bigelovii. 



Our species is interesting as being the most northern representative of a group of Thamnoid 

 Hypna that appears to abound on the Quitinian Andes. 



H. WHIPFLEANUM (sp. nov.): dioicum pusillum ctespitans sordide virescens ; caule filiformi 

 bis terve diviso, divisionibus arcuato-prostratis pinnatis flagelliformi-attenuatis apice radiculosis ; 

 foliis erecto-patentibus caulinis deltoideo-ramulinis ovato-lanceolatis acuminatis minute quad- 

 rate oblonge areolatis opacis dorso papillosis toto ambitu dentato-serratis, costa pellucida fere 

 ad apicem attingente ; perichsetialibus filiformi-acuminatis evanidi-costatis ; capsula abrupte 

 horizontal!, ovali oblongave, subinfequali, collo conspicuo instructa ; peristomii albidi dentibus 

 lineali-lanceolatis crebre articulatis, ciliis carina solutis, ciliolis binatis, omnibus aequilongis ; 

 operculo conico in medio constricto ; pedicello tuberculato cauligeno. Habitat same as the 

 last. A small species with thread-like stems 1-2 inches long ; branches of the same thickness 

 as the stems, 3-5 lines long, numerous and pinnately disposed. Pedicels 5-7 lines in height, 

 cygneus. Perichaetia rooting at the base. Capsule dark chestnut brown, pachydermous ; its 

 junction with the pedicel being nearly at right angles : collum blackish, obtuse at base. Male 

 flowers numerous on the main divisions of the stem, slightly stipitate ; perigonial leaves broad- 

 ovate long-acuminate ecostate ; antheridia 10-15 copiously paraphysated. (Plate IX.) 



Hypnum crispifolium and Leskea laxifolia of Hooker, found on the northwest coast of this 

 continent by Menzies, appear to be nearly related to this species ; but from the description and 

 figures of them, given by Hooker and Schwaegrichen, they are both larger plants than H. 

 Wippleanum, particularly the first, which has subfalcate-secund, flexuous leaves much longer 

 acuminated, and when dry crisped : the second has an ovate-globose capsule, a Leskeoid peri- 

 stome, and leaves of a different areolation. 



H. CALYPTRATUM, (sp. nov.) monoicum exiguum ; caule filiformi repente subsimplici pinnato 

 apice flagelliformi foliis erecto-patentibus late ovatis longe tenuiter acuminatis denticulatis inferne 

 margine recurvis continuo-costatis dorso parce papillosis e cellulis minutis subquadratis dense 

 areolatis ; perichastialibus pellucidis striatis lanceolatis filiformi-acuminatis, costa e:$currente ; 

 capsula cylindracea obliqua curvula exannulata ; perist. dentibus lineali-acuminatis, ciliis line- 

 aribus foraminulosis, ciliolis singulis brcvissimis ; operculo conico obtuso ; calyptra permagna 

 cuculliformi infra capsulam descendente ; pedicello cauligeno gracili longiusculo : flore masculo 

 globoso gernmiformi, perigonialibus orbiculari-ovatis apice tenui recurvo, antheridiis eparaphy- 

 satis. Near Los Angeles, on the ground. A very small species belonging to a group consti- 

 tuting the genus Thuiduim of the Bryologia Europtea of Bruch and Schimper. Its distinctive 

 characters consist in its small size, simply pinnate ramification, narrow elongated, inclined 



