ON CALIFORNIAN MOSSES. 5 



It is, indeed, with some misgiving, that I add two new species to this group of 13 a r- 

 b u 1 a e already too much divided. But I have no other alternative but to do it, or to 

 recall as mere varieties a number of forms considered as species by other authors, and 

 whose characters are of the same kind and no more definite. 



16. BARBULA convoluta Ihdw. 



On rocks near San Francisco. May. 



17. BARBULA W a h 1 i a n a Schullz. 

 Clay soil, San Francisco. 



18. BARBULA Bolanderi Spec. nou. Gregaria, dioica. Caule brovi simplici vel fusciculatim coroante- 

 rauioso; Foliis inferioribus brevibus apcrtis, superioribus dense in rossularn imbricatis reflexis lingulatis vel ob- 

 longis obtusis vel ncrvo crasso fusco percurrentc brcvi-apiculatis, margine medio reflexis, raro revolutis, quando- 

 que planis; areolatione basilari quadrato-elongata laxa pellucida superne densa chlorophyllosa quadrata-polygona 

 papillosa. Perichaetialibus internis brevioribus. Capsula in pedicello brevi rubello crasso, cjlindrica ereeta vel sub- 

 cernua atro-sanguinea ; operculo rostrato obtusiusculo. Peristornii dentibus gracilioribus tortilibus rubellis granu- 

 losis ; membrana basilari angusta tessellato luteo-albida ; annulo brevi simplici persistente. Planta mascula gra- 

 ciliori, femineis intenuixta. Perigonialibus brevibus, e basi late ovata superne lanceolatis obtusis, antheridiis 

 paucis paraphjsibus quo duplo longioribus apice inflatis. 



A fine species allied to Barb u la marginata Bnjol. Eur. Rocks near the Bay 

 of San Francisco. Abundant. 



19. BARBULA am pi e x a Spec. nov. Grogaria, dioica, priori valde affinis. Caulc simplici brevi ; foliis laxc 

 imbricatis apertis lingulatis longioribus vnollibus obtusis nervo valido sub apice evanido instructis; areolatione basi 

 laxa quadrato-elongata, superior! dcnsiori polygona pellucida echlorophyllosa ; Perichactialibus internis binis elon- 

 gatis, vaginulam arete aniplectentibus, erectis apice tantum subito reflexis ; Capsula in pedicello rubello brevi, 

 cylindrica ereeta breviori, colore pallide-viridi ; operculo recto obtuso pallide rubello. Peristomio, annulo flore quo 

 masculo priori siuiilibus. 



This species is distinct from the former, especially by its soft leaves with empty areola- 

 tion ; by the long internal perichsetial leaves, erect and embracing the vaginula and the 

 base of the pedicel, and only reflexed at the summit ; by the shorter, smaller capsule and 

 shorter lid of a different color. Near San Francisco. May. 



20. BARBULA m u r a 1 i s Hedw. 



A few specimens of this species were sent, mixed with Barbula flexifolia 

 Hmp. labelled : On rocks near San Francisco. 



21. BARBULA laevipila ScUw. 



The Californian species appears a reduced form of the European. It has shorter stems, 

 shorter leaves, and a slender capsule. On clay soil in Mount Diabolo. May. 



