418 ScAPANIA. 
XX. SCAPANIA, Dum. 
Recueil, (1835) ; Radula § 2 Scapania Dum. Syll. (1831), 
Genus unicum hujus subtribus meipso sub AXquatore lectum a 
ceteris generibus perianthio donatis distat perianthio compresso- 
plano, faciebus normaliter eplicatis, carinis aciebusve lateralibus ad 
anthophyllorum plicam, suturis antici et posticé haud perceptibili- 
bus, vel posticd in carinam humillimam elevaté; nullibi alata, ore 
lato truncato integerrimo, dentato, vel lobulato. Bractee ¢ 3—12- 
andre (usque ad 20-andre, Syn. Hep.)—De habitatione speciei 
Andine solitariz videas infra. 
1. SCAPANIA SPLENDIDA, Spruce. 
Hab. Andes Quitenses, in montis Abitagua cacumine pluvioso, alt. 
2000", ubi ad palmarum truncos viget. 
F. lob 55 x 3°3, lobul 4:2 x 3°3, 3°0 x 2°5 ; carina *8-1:0; ¢ py—szh 3 per 
8:0 x 3°7 ; cal 3:0 x 2-0; caps 2°75 x 1°25 ; sectio caulis *8 x “5™™, 
Cxespites elati laxiusculi pendul. Caules 3-pollicares, ramos paucos 
axillares cauli subparallelos, edentes, fere arhizi, nigrescentes, validi, 
subcompressi, sectione ovali, strato corticali proprio nullo, cellulis 
exteridribus minoribus coloratis (opacis), interioribus subpellucidis, 
omnibus parvis sectione fere eequilateris. 
Folia maxima albido-viridia basi purpurascentia parum imbricata fere 
horizontaliter patula subplana bipartita ; lobus suboblique ovalis 
rotundatus raro solum obtusatus basi postica crispulus caulem late 
transiens, toto margine minute crebre spinuloso-denticulatus ; lobulus 
subdimidio brevior, fere eequilatus, late rhomboideo-ovalis, obtusus v. 
abrupte acutus, subconcavus, margine spinuloso lobo appressus, basi 
antica dilatata suberispula caulem late transiens. Cellule inferiores 
elongatee, superiores submarginalesque fere sequilateree, parvule 
incrassate, minute 6-sinuate, cavitate ovali plus minus elongata 
subinde angulata, subopacee sublievissimee.—Insertio tam lobi quam 
lobuli est fere tranversalis, ad lineam arcuatam utrinque in caule 
subdecurrentem. Lobia basi ad +—1} altit. connati, sutura convexa 
(arcuata) fere horizontali vix alata. 
Flores dioici: 9 terminales; bracteze (sc. folia suprema) ceteris foliis 
parum diverse, minus patentes, basi perianthium arcte amplectentes, 
lobis paulo inzequilongis altius (fere ad 4) connatis, carina angu- 
lum cum caule acutum formante. Folia bracteis proxima in typum 
normalem sensim transeuntia. 
Perianthia alte emersa, bracteis vix duplo longiora, pallida, basi purpur- 
part of Diplophyllum as originally proposed by Dumortier. In this, as in 
many other cases, it is a merely artificial line which we are obliged to draw 
between two adjacent groups. The relationship of Scapania to Plagiochila 
seems to me by no means so close as it has been represented ; the distinctly 
succubous leaves of the latter, the entire absence of an antical lobule, the 
laterally (not frontally) compressed perianth, and other differences sufficing to 
separate them somewhat widely, notwithstanding the sharply-toothed leaves 
usual to both genera. 
