604 19. sKITOPHYLLEX. [.Eustichia. 
subdistiche imbricata pauca minora inordinatim disposita hic illic inter- 
jecta, patentia, apicibus incurvis, ovata, complicata, carinata, nervo excur- 
rente, marginibus crenulatis, cellulis parvis quadrato-rotundis; perichz- 
tia aggregata, foliis ovatis lanceolatisque acuminatis convolutis inte- 
gerrimis.  Pedunculus elongatus. Theca ovalis, zqualis, erecta, sicca 
plicata, opereulo longo oblique subulato; peristomii dentes elongati an- 
gusti, per medium plus minus fissiles striatuli. 
Diplostichum longirostrum, Mont. Ann. des Sc. Nat. ser. 3. iv. 116. 
Didymodon distichus, Schwegr. t. 183. 
Cymbaria Jamesoni, Tayl. in Hook. Lond. Journ. vii. 190. 
Eustichia Jamesoni, C. Müll. Syn. ii. 523. 
Hab. Andes Quitenses, in montibus Pichincha et Chimborazo, Jameson ; 
in montibus Tunguaragua, Carguairazo et Pichincha (9000-12,000 ped.), 
Spruce, n. 1. 
Caulis 1-1i-uncialis. Folia vix i lineam longa, glauca, luteo-viridia, 
interdum flavescentia, primo visu exacte bifaria, accuratius autem inves- 
tigata hic illie unum invenitur ex ordine exclusum. Pedunculus 8-10- 
linearis. Theca nigro-fusca subnitida. 
Remote as the first station of this moss, in the Island of 
Bourbon, is from that in the Andes, small barren specimens from 
the Island of Tristan da Cunha correspond, to all appearance, 
exactly with the South- American ones. 
Tribus XX. POLYTRICHEZ. 
119. Arricnum, Pal. de Beauv. Prodr. 
Musci subhumiles, caulibus gracilibus parum divisis. Folia 
ligulata, versus flores sensim longitudine increscentia, siccitate 
crispata, pagina externa sepe lamellis paucis angustis obliquis 
rarius rectis striata, nervo angusto anguste paucilamellato, cel- 
lulis rotundatis areolata. Thece tenuipedunculate, elongate 
anguste cylindracez, rect curvateve, calyptris apice setis paucis 
inspersis. 
Flores NOR so ioe e ecco vené xk eX RE eee 1. A. polycarpum. 
Flores dioici. 
Folia perichzetialia longa, basi laxe elongate reticulata. 
2. A. GErstedianum. 
Folia perichztialia lineari-subulata, basi cellulis brevibus oblongis areo- 
o RG eee ce QM d penuas 3. A. pastasanum. 
1. A. POLYCARPUM (Schimp., C. Müll. Syn. ii. 558, Catharinea). Folia 
patentia, spathulato-lanceolata, undulata, apice obtusiuscula, pagina infe- 
riore dentibus oblique dispositis, nervo extus sub apice parce dentato, 
