Evans: HEPATICAE OF PUERTO RICO 37 
differs in its ocellate leaves with distinctly denticulate margins and 
in its much shorter perianth with strongly spinose keels. JD. 
biocellata differs in its smaller size, in its ocellate leaves, in its 
smaller leaf-cells with thicker walls and in lacking the sharp tooth 
near the end of the keel. JD. dissitifolia finally is smaller than D. 
infundiiulata and is distinguished further by its falcate leaves, by 
its more complicated underleaves and also by the absence of the 
sharp tooth, 
Propagula are abundantly produced by D. infundibulata and 
are borne on microphyllous branches similar to those described 
for D. didens. In extreme cases (f/. 5, f. 3) these branches are 
flagelliform and project at right angles from the substratum. 
The lobes of their leaves are broadly ovate or subrotund, the 
margin is quite entire and the apex varies from subacute to 
rounded. Oftentimes the terminal cell is apiculate. In many 
cases the reduced leaves are only four or five cells long. The 
lobules of these diminutive leaves consist of only three or four 
cells in a row, the terminal cell projecting as a minute tooth and 
the others being adnate to the lobe. The underleaves on the 
microphyllous axes develop no rhizoids and are frequently. com- 
posed of only four cells, two forming the basal portion and the 
other two the minute and erect divisions. 
DREPANOLEJEUNEA INCHOATA (Meissn.) Schiffn. 
Jungermannia inchoata Meissn.; Lehmann, Pugillus, 5: Ig. 
1833. 
Lejeunea inchoata Meissn.; G. L. & N. Syn. Hep. 343. 1845. 
Lejeunea epitheta Tayl. Lond. Jour. Bot. 5: 395. 1846 (‘este 
Stephani).* 
Lejeunea (Drepano-Lejeunca) inchoata Spruce, Hep. Amaz. et 
And. 187. 1884. 
Lejeunea (Drepano-Lejeunea) planiuscula Spruce, /. c., 192. 
1884 (deste Stephani).* 
Drepanolejeunea inchoata Schiffn.; Engler & Prantl, Nat. Pflan- 
zenfam. 1°: 126. 1893. 
Plants green, becoming brownish upon drying, growing in thin 
irregular patches: stems 0.06 mm. in diameter, closely adherent 
* Hedwigia, 35: 83. 1896. 
