— 31 



slightly crenulate ; lobule inflated, ovate, scarcely crenulate, apejt with a 

 single projecting cell: underleaves contiguous or sub-imbricate, a little 

 larger than lobule, orbicular, rounded or sub-cordate at base ; bifld about 

 one-half, segments usually acute or apiculate, occasionally obtuse, sinus 

 acute to obtuse, margin entire or sinuate: inflorescence autoicus : female on 

 leading or short branch; perianth obovoid, often distinctly dilated above 

 middle, gradually narrowed toward base, broad and truncate above, and 

 with a short beak, terete below, sharply flve-keeled above, keels smooth: 

 male inflorescence usually on short branch: spores greenish, angular, thick- 

 walled. Grows on trees. Ranges from North Carolina to Florida, west- 

 ward to Louisiana. and Texas. Has been distributed in Drummond's South- 

 ern Mosses 171, in part; Muse. Allegh. 272 (as L. scrpy llifolia); Hep. Bor. 

 Am. 97, in part (as L. ca7iifolia)\ Hep Am. 98 (as/.. Austini.)\ Hep. Amer. 

 137 (as L. htccns.). 



MiCROLEjEUNEA LUCENs (Tayl. ) Evaus {Lcj cunca lucciis Tayl.) Fig. 4. 



Pale green, scattered or in turfs: leaves distant to imbricated, lobe 

 obliquely spreading, ovate, apex rounded varying to obtuse, margin entire 

 or subcrennlate from projecting cells; lobule half as long as lobe, strongly 

 inflated, ovoid; lobule often poorly developed: underleaves distant, ovate 

 narrowed toward base, not decurrent, bifid to about the middle, with subulate 

 to acuminate divisions ending in a single cell or in a row of two cells, sinus 

 narrow and obtuse: inflorescence dioicous: female on short branches ; bracts 

 complicate, nearly equally bifld; perianth scarcely exserted, broadly pyri- 

 form, slightly compressed, flve-keeled, the keels smooth, the beak short: 

 male spike julaceous, at base of an elongated branch. On trees or moist 

 rocks. Virginia, Florida, Mississippi, Louisiana. Throughout tropical 

 America. Was distributed in Sull. Musci Alleg. No. 274, as Lcjcunca 

 ciicullata; and in Hep. Bor. Am. No. 98, under same name. 

 MiCROLEjEUNEA RuTHii Evaus Fig. 5. 



Pale or dull green, scattered or loosely caespitose, sparingly and irregu- 

 ularly branched, the branches widely spreading: leaves distant to loosely 

 imbricated, the lobe obliquely spreading to suberect, ovate or broadly ovate, 

 rounded at apex, margin nearly entire, sometimes slightly angular-sinuate; 

 lobule half the length of lobe, strongly inflated, ovoid, apex tipped with a 

 single projecting cell which is sometimes outwardly curved: underleaves dis- 

 tant, orbicular, narrowed toward base, and neither rounded nor decurrent, 

 bifld to about middle with broad, suberect, triangular lobes and obtuse sinus, 

 lobes acute, ending in single cell or row of two cells, margin entire or sub- 

 crennlate from the projecting cells, lateral margins rounded: inflorescence 

 dioicous ; female on a leading branch, bracts complicate, deeply and 

 unequally bifld; bracteole free, ovate from an abruptly contracted base: 

 perianth and male inflorescence as yet unknown. Known only from the type 

 locality. Big Frog Mountain, Tennessee. The original description is in 

 Mem. Torr. Bot. Club, 8:161. 1902. The species is near M. ulicina Tayl. of 

 Europe. It somewhat resembles M. lucens, from which it may be distin- 

 guished by the less widely spreading lobes of its leaves, smaller cells with 

 thicker walls, broader underleaves, which have broader segments and are 



