58 llVnioi^ Sfafc Lahoratorj/ of Xafural Hhforij. 



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. 

 {JiiHgcnimnia jJifhesccns Schrank.) 



Hab. — Mountainous places eastward. (Eu.) 



Bib. — Syn. Hep. p. 5(H; 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 f3-7, 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, Allegliany Mts. {Sullivant), Tenn. 

 (FredericJcson), N. Orleans (Drununond). 

 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. 



ira6.— Alleghany Mts. [Sidlivant). 



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



^.mc— Muse. Alleghan. No. 283, "specimen solum sinistrum." 



