130 BRACHIO-LEJEUNFA. 
lobulo magno, seepe=folii $, margine 3-7-crenulato, crenulis pro more 
opacis, raro obsoletis. Bracteze aliarum sp. alate, seepe integerrime. 
Perianthia parum compressa, 3-10-carinata-plicatave—primum (ut vide- 
tur) 3-4-gona, plicis intermediis adjectis, in aliis sp, 8-10-plicata fiunt. 
Homalo-Lejeunea Mackaii et Brachio-Lejeunea laxifolva nexum prebent 
inter has duas sectiones, vix pro subgeneribus distinctis habendas ; quum 
in L. Mackaii folia integerrima obtusissima inveniuntur, contra affinium 
indolem; in L. laxifolia perianthium, carinis posticis interdum tam 
approximatis obtusatisque ut in unicam latam fere confluunt, exinde 
trigonum evadit, itaque ab eo L. Mackaii paulo discrepat. 
Hab. In arborum truncis ramisque, raro in rupibus vel in ipsa terra 
inter lichenes, cespites depressos pluristratos seepe pendulos efficiens ; 
semper monticola mihi visa. 
Distr. Per Andes sylvaticos Columbianos, Quitenses et Peruvianos, alt. 
600-3500", nullibi in planitiem descendens; etiam in terris montosis 
Brasiliz australioris, insularum Antillarum et Mexico. Ipse 2 species 
solum legi, quarum una, /?. L. bicolor in regione neotropica prelate distri- 
buta est.—Alias paucas species americanas cognovimus; aliz ex India 
orientali (preecipue ex insulis) proveniunt. 
A. Perianthia 4- (3-) plicata. 
1. Br. L. laxifolia. Fl. ¢ hypogyni. F. semicordato-ovata acuta apicu- 
latave. Foliola orbiculata. 
2. Br. L. securifolia. Fl. ga 2 dissiti. EF. obovato-securiformia obtusata. 
Foliola cuneato-rotunda, 
B. Perianthia 10-plicata. 
3. Br. L. bicolor. 
1. BRAcHIO-LEJEUNEA LAXIFOLIA, Tay]. 
Phragmicoma l. T. in pl. Jamesonianis; Mitt. in Lond. Journ. Bot. 
1881. 
Hab. In Andibus Quitensibus sylvaticis, alt. 2000-3500 m., ex arborum 
ramulis pendula: Pangor ; Guayrapata, etc.; Pichincha in stillicidiis. 
F 1:3 x 14 (lobulo incluso); lob 65; ¢f,; f'**8 x °8, 6x “6; br 1:0-1:2; per 
NED Xisig Liao io 
Subceespitosa rufo-fusca. Caules 1-3-pollicares, sat ramosi, steriles laxe 
pinnati, fertiles plus minus dichotomi. 
Folia imbricata, supra plicam decurrentem erecto-patentem divergentia, 
oblique semicordato-ovata-oblongave, apice valde decurvo (in sicco 
convoluto) acuta subapiculatave, margine antico toto (in sicco pree- 
cipue) peranguste recurvulo; lobulus duplo brevior obtriangularis, 
a plicam subinflatus, ad marginem appresso-planus_ transversus 
cellulisque 3 prominulis opacis tricrenulatus; cellule parvulz, pariete 
ad angulos inerassato, inferiores sensim submajores, marginales fere 
minute quadrate. 
Foliola contigua v. subimbricata foliis dimidio vy. duplo breviora orbicu- 
lata, basi anguste breviter decurrentia ibidemque marginibus valide 
recurva. 
Flores monoici (paroici): Q dichotomiales. Bracteze foliis breviores 
erectee compliato-bilobee, lobo obovato-cuneato acuto obtusove in- 
teyerrimo vy. apice subdenticulato, lobulo minore ligulato lanceolatove ; 
bracteola cuneato-ligulata rotundata, 
