J UBULA. 61 
the valves. But in Frullania the cylindrical portion of the pedicel con- 
sists of four concentric strata of alternating cells (7.e., there are 8 cells on 
the diameter of a section), and no cruciate arrangement is traceable. 
Jubula agrees with Frullania in the axillary ramification, the saccate 
lobule, and the mono-tetragynous @ flowers. It has one character not 
found in any species of either Frullania or Lejewnea, viz., the presence 
of an antical elobulate leaf at the insertion of every branch, seated partly 
on the stem, partly on the branch, corresponding to the similarly posited 
leaf in Bazzania, Blepharostoma, &c. 
1, JuBsuLA HurcHinst& (Hook). 
Jungermania Hutchinsie, Hook. Brit. Jung. t. 1; Engl. Bot. t. 2480 ; 
Jubula Hutchinsie Dum. Comm. 212. 
Hab. per insulas Britannicas, semper fere ad super humectatas. Kzl- 
larney, variis locis (DS* Hurcuins, Tayior et ipse, &c.) Ballina- 
hasig prope Cork (W1Lson); Dolgelly, Wales (RALES, WILSON, &c.) ; 
in spelunca ad oras Dunoon, Argyle (GourLin et Lyon). Ejusdem 
speciei varietates proveniunt ex America boreali (Mewico, &c.), necnon 
ex Andibus equatorialibus et insulis Malayanis. 
F 16x11, 1:1x0°8; lob -25x°1; ¢ Ay —-ss; fl “8x °8, 8x °7, 65x "755 
°6x°6; br lob 1°8x 1-0; br'2 16; per 19x95; bro 55™™, 
Majuscula, leete viridis, prostrata, tegeticulas latas sistens, raro substrati- 
ficata. Caules 1—3-pollicares, laxe et subflabellatim ramosi, ex parte 
pinnati, ex parte dichotomi, subgeniculati, ramis 9 sub flore inno- 
vando furcatis, raro innovatione unilaterali auctis. 
Folia subimbricata subplana, late oblique ovata, apiculato-acuta cuspi- 
datave, basi excepta, argute spinoso-dentata, ad marginem anticum 
precipue, spinis 2-12, pro more brevibus triangulari-acuminatis, 
interdum lengioribus et ciliiformibus, ad folia ramea paucis raro 
nullis, basi antica dilatata non autem cordata, caulem haud perfecte 
obtegentia, postice ad lobuli insertionem sinuata; lobulus a caule 
spatio 4-5 cellularum dissitus, eidem subparallelus (processulo brevi 
rarissime interposito) saccatus, brevi-digitiformis, lobo 5-6 plo brevior, 
basi externa (ore) cilium sub 5 cellulas longum ad calcaris instar 
deferens, haud raro evolutus subulatus lanceolatusve acuminatus ; 
cellule parvulee, ad angulos haud (vel lenissime) incrassatee, sub- 
pellucide, inferiores subelongatze, lobulum versus latiores discolor- 
esque. Folia inferiora minus, superiora (florem 2 versus) magis 
dentata. Folia axillaria (se. que ramos subtendunt) subantica, 
ceteris latiora, magis symmetrica, late subcordato-ovata acuminu- 
lata, vel integerrima vel subspinosa, lobulo nullo, rarius parvo-denti- 
formi evoluto. Ad floris 9 dichotomiam nullum folium axillare 
adest. 
Foliola subrotunda subplana, basi acute decurrentia, apice ad 3 usque 
bifida, segmentis cuspidato-acuminatis, conniventibus, margine spinis 
paucis Jongis ciliata vel inermia. 
Flores monoici: 2 in ramo terminales, ex innovationibus oppositis sim- 
plicibus, bracteis basi adnatis, dichotomiales. Bracteze intime foliis 
sublongiores, profunde bilobe, complicatze, lobis oblique lanceolatis 
acuminatis spinosis laciniatisve, postico duplo (vel perpaulo) minore ; 
bracteola fere bipartita carinata, lobis tenuiacuminatis spinosis, Folia 
