58 Illinois State Laboratory of Natural History. 



irregularly curved, "without sucker-like branches at the apex; 

 midribs showing scarcely any cortical layer, covered with 6-10, 

 commonly 8 rows of very similar and uniform peripheral cells. 

 (Jungermania pubescens Schrank. ) 



Hob. Mountainous places eastward. (Eu.) 



j^5. gyn. Hep. p. 504; Hep. Europ. p. 140; Lindb, Monog. Metzg. 

 n. 1. 



Delin. Brit. Jung. t. 73 ; Ekart t. Ill, f. 19 ; Lindb. Monog. Metzg. 

 f. 1. 



2. M. myriopoda Lindb. Dioecious; thallus 5 cm. long, 

 1 mm. wide, elongate, dichotomous, subsimple, the branches 

 long, linear and of uniform width, convex above, the margins 

 reflexed, not undulate; the midrib beneath densely setose-pilose, 

 which is scarcely apparent on the foliaceous portion of the 

 thallus; hairs rather long, straight or nodding, the marginal 

 ones in bundles of 3-6, rarely single or double, some of them 

 with sucker-like branching extremities; midribs covered above 

 with two rows of enlarged cells, beneath with 3-7, commonly 

 4-6, rows of smaller, lax, often indistinct cells. (Jungermania 

 ciliifera Schwein., Metzgeria furcata, Sulliv. Muse. Alleghan. 

 No. 283.) 



Hab. On shaded rocks and trees, Alleghany Mts. (Sullivant), Tenn. 

 (Frederickson), N. Orleans (Drummond). 

 Bib. Lindb. Monog. Metzg. n. 6, f. 4. 

 Exsic. Muse. Alleghan. No. 283, "specimen solum dextrum." 



3. M. hamata Lindb. Dioecious; thallus 10 cm. long, 

 2.5 mm. wide, most frequently much elongate, dichotomous, 

 the branches long, linear, and of uniform width, strongly con- 

 vex to slightly rounded above, the margins reflexed not undu- 

 late, the midrib densely setose-pilose beneath, which never ex- 

 tends to the foliaceous portion of the thallus; the hair very 

 long, divaricate and hooked-deflexed, the marginal double, 

 scarcely ever with sucker-like branching extremities; midribs 

 both above and below covered with two rows of enlarged, lax 

 cells. 



Hab. Alleghany Mts. (Sullivant). 



Bib. Lindb. Monog. Metzg. n. 7, f. 5. 



Exsic. Muse. Alleghan. No. 283, ''specimen solum sinistrum." 



