TRACHY-LEJEUNEA. 185 
Caules 2-pollicares, intricati, flexuosi, rufi purpureive, validi, tenaces, 
strato corticali e cellulis 7-seriatis magnis oblongo-quadratis pellu- 
cidis, stratis 2 v. 3 interioribus e cellulis multo angustioribus, conflati, 
inzequaliter pinnati, ramis arcuato-flexuosis seepe apice attenuatis. 
Folia rigidiuscula, paulo (vix ad 7 lat.) imbricata semiovata-oblonga sub- 
falcata, apice decurvo v. fere involuto rotundata obtusatave—ramo- 
rum interdum subacuta, facie subleevissima, margine fere toto minute 
eroso-denticulata, basi antica dilatata sed non semicordata, postice 
subrecte complicata, plicd fere recta v. parum convexd, sensim 
in folium abiens; cellule mediocres pellucida, hand incrassatie, sub- 
conformes, paucis (3-6) ad folii mediam basin ceteris duplo majori- 
bus in ocellum congestis, subplane, solum marginales obtuse 
acuteve prominulee. 
Foliola minuta, caule haud latiora, foliis 5-plo breviora, subrotunda, 
vix ad 4 usque anguste bifida, segmentis acutis integerrimis. 
Flores monoici: @ in ramo brevissimo, foliis sub 2-paribus (infimis 
minutis) vestito, terminales, innovatione nulla suffulti. Bracteze 
foliis majores, faleatee, incurvo-concavie, eroso-denticulatee, lobo 
valde oblique ovali obtuso, lobulo 4-plo angustiore sub 2-plo breviore 
acuto acuminulatove; bracteola brevior ovalis obtusa, apice vel 
integra vel seepius brevissime anguste bifida. 
Perianthia vix emersa, f. caulinis tamen sublongiora—demum elongata— 
rufa sanguineave, pyriformia compressula paulo infra apicem latum 
rotundato-truncatum subconstricta, adeo panduriformia, alte 5-cari- 
nata, carinis alé 4—5-cellulas lata, apice muricato-denticulata, tota 
fere longitudine auctis, marginalibus valde devexis. 
Andreecia cauligena, foliis sublongiora tenuia; bractese 4—6-juge parvee 
vix contiguze compresso-subglobosee turgide apice subineequaliter bi- 
lobee. 
Trachy-L. pellucidissima differt teneritate, pelluciditate, ramificatione 
sparsiore ; foliis brevioribus fere planis, facie plus minus scabris; foliolis 
solum 3-4-plo (nec 5-plo) minoribus, ultra $ bifidis; perianthiis infra 
apicem haud constrictis, carinis peranguste (vel seepe non) alatis. 7'r.-L. 
Aquarius ramo fertili innovato et foliis asperrimis longius distat. 
5. TrRacHy-LEJEUNEA AQUARIUS, Spruce. 
Hab. In sylvis precipue humilioribus ad flumen Negro superius vulgata, 
ubi ad truncos semiputridos plagas magnas densas albidas, semper 
aqua repletas, efformat. 
F 55x °45, lob -15; ¢ 4; f'% 125-15; br 8-10; br 45x33; per 
ES xno, 
Caules 3-pollicares procumbentes intricati rufescentes, validi tenacissimi, 
haud facile rupti, strato corticali e cellulis magnis pellucidis 7-seriatis, 
stratis internis 3 v. 4e cellulis multoties angustioribus, conflati, arcte 
pinnati, ramis seepe parvifoliis eleganter decurvis. 
Folia confertiuscule imbricata, late dimidiato-ovata subfaleata, apice 
devoluta, caulina abrupte oblique subacuta, ramea acutata v. subacu- 
minata, omnia e cellulis prominulis facie muriculata, margine den- 
ticulata apiceve serrulata, caulina recte, ramea sinuato-complicata, 
lobulo 4-plo breviore convoluto-inflato; cellule: parvee, (subapicales 
minute,) cuttulate, extus conics, paucee suprabasales magne elon- 
gate in ocellum coacervate, omnes parietibus subincrassatis. 
Foliola minuta foliis sub 4-plo minora, subrotunda, ad medium bifida. 
TRANS. BOT. SOC. EDIN. VOL, XV. 2A 
