Tii'/xiflcd' ()f Xoii/i Aiiicrlca. 09 



sistent at the apex of the valves, erect, unispiraL Leaves 

 delicate. Aiuphigastriu entire or bifid. Stems faciculate or 

 irregularly hranchiiig. Entire plant of small size, some species 

 scarcely visible to the unaided eye. Named for A.-L.-S. LejcHne 

 a French botanist. 



* AiH])hif/(/sfr/(/ entire or lj((relij enKirj/liiafe. 



1. L. calyculata Tayl. Stems entangled, branched; 

 leaves spreading-recurved, oblong, obtuse, entire, the lower lobe 

 involute, lanceolate; amphigastria rotund; inner involucre axil- 

 lary, somewhat exserted, obcordate, 4-winged, the wings entire; 

 involucral leaves narrow, acute. 



Hah.— On lichens; Laurel Mts., Pa. {Lea in Herb. Hook.) 

 Bib.— Syn. Hep. p. 752. 



2. L. cyclostipa Tayl. Stems 1 — 1.5 cm. long, widely 

 branched; leaves [)ale green, imbricate, spreading-recurved? 

 oblong, obtuse, entire, the ventral lobe quadrate-ovate, involute, 

 one-toothed; amphigastria reniform-rotund; inner involucre 

 terminal, obcordate, compressed, plane above, ventricose-4- 

 winged beneath, the wings ciliate with dentate cilia; involucral 

 leaves nearly covering the inner involucre. 



Hah. — Bark of trees; near Cincinnati, O. {StillircDil). 

 Bib.— Syn. Hep. p. 749. 



3. L. polyphylla Tayl. Stems ca3spitose, G — 8 mm. long, 

 ascending; leaves olive-green, vertical, imbricate, concave, semi- 

 cordate, entire, the lobe involute, lanceolate; amphigastria 

 minute, reniform; inner involucre immersed, rotund-obovate, 

 S-O-angled near the apex, the angles crested, somewhat den- 

 ticulate. 



Hab.—^ear Cincinnati, 0. (Herb. Hoot) 

 Bib.— Syn. Hep. j). 751. 



4. L. auriculata Hook, and Wils. Stems 1 — 1.7 cm. 

 long; leaves dark-green, closely imbricate, acinaciform. com- 

 plicate and somewhat 2-lobed at base; amphigastria obovate- 

 rotund, emarginate: inner involucre obovate-triangular. 



Hab. — Bark of trees ; La. 



