PLAGIOCHILA. 479 
Flores 9 in caule terminales (dichotomiales). Bracteze foliis multo 
majores cordato-orbiculate concave, marginibus recuryis, apice 
magis denticulato. 
Perianthia subemersa, late cupulato-campanulata, compressa, hine ad 
medium usque fissa, exalata, ore subobliquo undulato-truncato 
integerrima. 
Spicze mascule cauligene, foliis consecutive, terminales medieve, lineari- 
ovoider. Bractez plurijuge confertee appressee ovato-rotunde ven- 
tricosz, apice brevi lato reflexule, integerrime. Antheridia 4-na 
globoso-pyriformia, alia in stipite subeequilongo, alia in  stipite 
triplo longiore, basin versus cellulis uniseriatis, superne 2—3-seriatis 
conflato. 
Obs. Folia in exemplaribus Jamesonianis meisque ad Pichincha lectis 
magis dimidiata sunt, subtriangularia, apice angustiora et constanter fere 
integerrima; aliter autem a forma e monte Mulmul supra descripta haud 
differunt. 
31. PLAGIOCHILA HETEROMALLA, Lehm. et Lindenb. 
Sp. Hep. 83, t. 18. 
Hab. Andes Quitenses, ad arbores in montis Tunguraqua jugis sylvaticis, 
: alt. 2200-2800™. Peruvia et Chili (Sp. Hep. 1. ¢.) 
F 4:25 x3°0; ¢ sg; per 75 x 2:5-3:0™™. 
Caudex validus, late repens, denudatus. Caules 4-pollicares erecti 
cespitosi, vage vel subdichotome ramosi, inferne e foliis deciduis 
subnudi, ergo dendritici; rami adscendentes. 
Folia sat magna fulvo-badia tenuia, late imbricata, alterna vel solum 
per paria subapproximata, distiche patula vel decurvo-secunda, late 
semicordata rotundata, circumcirea fere spinulosa ciliolatave (spinulis 
40 et pluribus, 3-5 cellulas longis, aliis varie curvatis), basi antica 
longius oblique decurrentia, postica semicirculari recurvo-cristata ; 
cellule parvulz equilatere. 
Flores ? terminales, innovandi, seepe ex dichotomia. Bracteee unijuge, 
foliis parum majores latioresque, magis spinulose. 
Perianthia maxima, involucrum duplo excedentia, oblongo-ovalia, superne 
complanata, apice subdecurvo bilabiata, labiis rotundatis crebre 
spinoso-dentatis, acie antico anguste spinoso-alata raro exalata. 
Capsula in pedicello perianthium duplo excedente subglobosa, pariete 
valido opaco. Elateres pertenues flexuosi, plerique dispiri, intra 
capsule apertze valvulas diu persistentes. Spore minutee. 
Var. latifolia 8. Folia imbricata plano-disticha (nec secunda) semicordato- 
orbiculata, tam lata quam longa (4°25 x 4°25, 3°5 x 3°5™™.), margine 
antico subrecurvo supra medium dentata, postico toto fere breviter 
spinuloso-dentata, basi (7.e. auricula) plerumque plana, cauli appressa, 
dentibus omnibus 20-40; cellule submajores (3;™™). Perianthia 
5°5 x 3:°25™™, oblonga vel subobovata, valde compressa, ore rotundato 
longispina, spinis seepe subramosis, antice ad tertiam solam alata.— 
Anne species propria, Plag. acanthostoma mst. ? 
Var. densifolia 8, Folia latissime semicordata (4°5 x 3°25™™), non autem 
orbiculata, margine antico fere recto vel etiam concavo, auricula valde 
recurvo-cristata. Perianthia subobovata, subalata vel lobulo (alam 
supplente) cum sutura intus connato aucta—Habitant varietates 
eum typo in monte Tunguragua. 
