Hepaticac : Yale Peruvian Expedition of Kj/r. 343 



reaching a maximum size of about 0.85 x 0.75 mm. and the lobules 

 of 0.35 X 3mm. ; the basal auricles of the lobe are less developed; 

 the appendiculum of the lobule is much shorter than the water- 

 sac; the stylus is better developed and is often subulate, being 

 sometimes two or three cells wide at the base; the underleaves 

 are smaller (maximum size about 0.45 X 0.4 mm.), one fifth to 

 one fourth bifid, and cuneate at the base, the sides being often 

 more or less reflexed. In other respects the plants are very much 

 ahke. 



The following are among the most important characteristics of 

 F. laxiflora: the reddish pigmentation (not always marked), the 

 distant to loosely imbricated leaves, the large auricles at the base 

 of the lobes, the blunt water-sac without a distinctly projecting 

 apex, the entire appendiculum rounded along its outer edge, the 

 inwardly curved keel connecting lobe and lobule, the minute stylus, 

 the large and involute auricles of the underleaves, the well-devel- 

 oped thickenings in the walls of the leaf-cells, the autoicous in- 

 florescence, the loosely crowded perichaetial bracts, the variable 

 and entire lobes, the sharp, entire, concave lobules, the variable 

 bracteoles, the four-keeled perianth with its beak closed by papillae. 



30. Frullania squarrosa (K. Bl. & N.) Dumort. 



Frullania squarrosa Dumort. Recueil d'Obs. sur les Jung. 13. 1835. 



On rocks, Huadquina, 5,000 feet, July 30, 1911. On wood, Santa 

 Ana, 3,000 feet, August 3, 1911. 



A common and variable species, the range of which apparently 

 extends throughout the warmer regions of the globe. 



31. Frullania brasiliensis Raddi 



Frullania brasiliensis Raddi, Mem. Soc. Ital. Modena, Fis. 19: 

 36. 1823; 20: pi. 3. f. 2. 1829. 



Jungermannia mucronata Lehm. & Lindenb.; Lehmann, Pug. 

 Plant. 6: 54. 1834. 



Frullania mucronata Nees, Naturg. euroj). Leberm. 3: 239. 18.38. 



Frullania cylindrica Gottsche; Lehmann, Pug. Plant. 8: 13. 1844. 



Frullania Leiholdii Lindenb. & Gottsche; G. L. & N. Syn. Hep. 

 782. 1847. 



On rocks and wood, San Miguel, 5,000-6,000 feet, July 24, 1911. 

 On rocks, Santa Ana, 3,000 feet, August 3, 1911. 



A common and widely distributed species of the American tro- 

 pics, first described from specimens collected in Brazil but now 



