70 Illinois State Laboratory of X<ittn-<tl 



5. L. testudinea Tayl. Stems 1 1.5 cm. long; leaves 

 whitish-green, closely imbricate, patent - divergent, oblong, 

 nearly acinaciform, obtuse, complicate-2-lobed at the base, 

 the lobes small, lanceolate; amphigastria rotund, minute; 

 sporogony phase unknown. 



Hob. Bark of trees, Southern O. (Sullivant). 



6. L. longiflora Tayl. Stems procumbent, widely 

 branching; leaves almost membranous, imbricate, patent, ob- 

 long, the apex rounded, entire, the lobe minute, ovate, some- 

 what one -toothed, involute; amphigastria rotund, plane, 

 scarcely bidenticulate at the apex; inner involucre lateral, 

 sessile, somewhat naked, obovate from a narrow base, 5-winged, 

 the wings almost entire. 



Hob. On trees, Southern 0. to Fla. 

 Bib Syn. Hep. p. 763. 



7. L. Mohrii Aust. Stems 1.3 2 cm. long, somewhat 

 simple; leaves dirty or fuscous-green, subcontiguous, obliquely 

 ovate, obtuse, entire or slightly repand, widely spreading, 

 somewhat decurved, the lobe small, inflated, the apex one- 

 toothed; amphigastria small, orbicular, distant; sporogony 

 phase unknown. 



Hob. Mobile, Ala. (Mohr.) 

 Bib. Torrey Bull. VI, 20. 



** Amphigastria bifid. 



8. L. serpyllifolia Libert, var. Americana Lindb. 

 Stems elongate, narrower than the typical form of the species, 

 pale, pellucid, less branching, fragile; leaves more or less re- 

 mote, the anterior lobe flat, opening from a basilar sac, scarcely 

 decurved, obliquely ovate-oval, obtuse or sometimes narrower 

 at the apex but never acute, entire or often slightly repand. 

 the upper margin especially in drying, the basilar sac ^ to */6 

 as large; amphigastria somewhat appressed, 2-3 times larger 

 than the posterior lobe, somewhat convex or plane, rotund- 

 oval, the sinus broad and obtuse, often semilunar, the segments 

 acute, the margins often repand or slightly unidentate out- 

 wardly at the base of the segments; inner involucre always on 



