PLAGIOCHILA. 481 
foliis majores et sat latiores, margine postico validius crebriusque 
spinoso-dentate, antico autem subrecto integerrime. 
Perianthia albida, vix emersa, subcupulata, apice compressa, ore convexo 
dentato-laciniata, laciniis crebris subulato-accuminatis, antice 
spinoso-alata, postice ala brevi vel cristulis binis inferne aucta. 
Calyptra perianthio vix duplo brevior, subglobosa, demum bilabiatim 
rupta. Capsula parum exserta oblongo-globosa 6—7-strata. Elateres 
tenues dispiri, seepe utroque fine solum monospiri. Spore elateribus 
paulo latiores subleeves. 
Andreecia tenuia lanceolato-fusiformia, ramulum totum vel ejus majorem 
partem tenentia. Bractez pauci-plurijugee, 1—2-andre. 
Obs. The two postical crests of the perianth, where they exist, seem to 
arise from the soldering on of an interposed underleaf to the two lateral 
anthophyls ; but such a floral underleaf is of very rare occurrence.—The 
species is certainly very near to Pl. pachyloma, but the habit is much 
slenderer, and the spinoso-acute, or acuminate, leaves, with much fewer 
marginal cilia, amply suttice to keep the two apart. 
34, PLAGIOCHILA PERMISTA, Spruce. 
Hab. Andes Quitenses, in montis Tunguragua rivuli saxis, cum PI. 
Fuscolutea Tayl. mixta. 
F 3°25 x 25, 4:0 x 3:0; ¢ sya 3 per 4:0 x 2°5™™, 
Caudex prostratus ramosus subaphyllus. Caules 2-3-pollicares suberecti, 
simplices vel inferne subpinnatim ramulosi. 
Folia flaventia alterna, laxe imbricata, distiche patula vel decurvo-secunda, 
late semicordato-ovata subtriangularia obtusata, auricula subrecurvo- 
cristata, margine antico recurvo decurrente integerrima, postico 
apiceque distanter denticulata spinulosave, dentibus ineequalibus 
divergentibus ; cellule: subparvulee eequilateree pachydermes. 
Flores 2 terminales. Bracteze foliis submajores magis spinulose. 
Perianthia subemersa, a basi cuneata oblonga compresso-plana, exalata, 
sutura antica tamen seepe incrassata, ore oblique truncato spinuloso- 
denticulata. 
Pl. oxyphylla 8. foliis spinoso-acutis et perianthio bialato a primo visu 
diversa. Pl. Jamesoni Tayl. var. homomalla, subsimilis, perianthium in- 
signiter alatum habet necnon folia opposita. 
35. PLAGIOCHILA INCRESCENTIFOLIA, Spruce. 
Hab. In monte Tunguragqua, ad terram inter lichenes, alt 2300. 
F inferiora 1:0x 1:0; ¢ 3 -ay;3 br 35x35 5 per 45x 4:5™™, 
Caules humiles subpollicares, e caudice tenui repente suberecti, basin 
versus flagella plura microphylla seepe edentes, apice floriferi, sim- 
plices vel semel furcato-innovandi. 
Folia rufescentia subtransversa, arcte imbricata devexo-secunda, e basali- 
bus minutis usque ad involucralia magna insigniter increscentia, 
oblique orbiculata (subdimidiata); margine antico decurrente revo- 
luto inferiora integerrima vel 1—2-spina, superiora paucispina ; postico 
vix decurrente inciso-dentata, dentibus f. inferiorum 8—10, superi- 
orum sub 20, retrorsum hamatis spinoso-acuminatis, 2 apicalibus 
longicribus (sinu altiori) seepe iterum denticulatis vel deutulis inter- 
calatis; cellule mediocres v. submajores subeequilatere guttulate, in- 
