Evans: New WEstT INDIAN LEJEUNEAE 609 
Rectolejeunea Maxonii sp. nov. 
Pale green, becoming whitish or yellowish with age, growing 
in depressed mats: stems 0.05 mm. in diameter, copiously and 
irregularly branched, the branches widely spreading, usually simi- 
lar to the stem but occasionally microphyllous: leaves loosely 
imbricated, the lobe plane, widely spreading, slightly falcate, 
broadly ovate, 0.5 mm. long, 0.4 mm. wide, antical margin more or 
less rounded at the base, then strongly outwardly curved to the 
broad and rounded apex, postical margin slightly curved or 
straight, forming a continuous line with the keel or slightly 
indented at the junction, margin slightly and irregularly crenulate 
from projecting cells; lobule usually well developed, inflated, 
broadly ovate, 0.1 mm. long, 0.09 mm. wide, keel more or less 
arched, free margin involute to the apex, apical tooth short and 
straight, hyaline papilla in a shallow indentation, sinus slightly 
lunulate; cells of lobe plane or more or less convex, averaging 
about 12u at the margin, 22y in the middle, and 27 X 22u at the 
base, apparently uniformly thickened but showing upon careful 
focusing minute trigones and rare intermediate thickenings; ocelli 
none: underleaves distant, orbicular, about 0.17 mm. long, bifid 
about one half with erect, usually obtuse or rounded divisions 
and an obtuse to acute sinus, cuneate at the base, margin entire 
or vaguely and irregularly crenulate from projecting cells: in- 
Roredceue: dioicous: 2 inflorescence sometimes borne on a leading 
branch, sometimes on a more or less abbreviated branch, in- 
novating on one side, the innovation sometimes simple and sterile 
but often soon again floriferous; bracts obliquely spreading, com- 
plicate, the keel sharp but not winged, lobe plane or nearly so, 
oblong-ovate to oblong-obovate, 0.5—0.6 mm. long, 0.35 mm. wide, 
rounded at the apex or very obtusely pointed, lobule ovate to 
oblong, 0.3 mm. long, 0.15 mm. wide, obtuse to rounded at the 
apex, margin of bracts as in the leaves; bracteole free from the 
bracts, ovate to obovate, 0.45 mm. long, 0.3 mm. wide, bifid 
about one third with rounded to subacute divisions and a narrow 
acute sinus; perianth about half exserted, obovate, 0.75 m 
long, 0.55 mm. wide, slightly emarginate at the apex with a chert 
but distinct beak, the upper angles rounded, cuneate at the base, 
compressed, antical keel low and short, postical keel long, two- 
angled, surface smooth or (especially along the keels) slightly 
and irregularly roughened from projecting cells: o inflorescence 
at first terminal on a more or less elongated branch but soon be- 
coming intercalary through apical proliferation; bracts mostly in 
from two to six pairs, slightly imbricated, strongly inflated with 
an arched keel, shortly bifid with rounded divisions, the lobule 
