104 Evans : Genus of Hepaticae from Hawaiian Islands 



thickened than the leaf-cells, mouth of perianth contracted, 

 laciniate, the laciniae long and slender, straight or irregularly curved 

 and distorted, sometimes denticulate, composed of a single row of 

 cells above and usually of two or more toward the base : $ bracts 

 in about six pairs, strongly concave, ovate, shortly bi- or tri-den- 

 ticulate at the apex, the teeth one to three cells long, otherwise 

 entire or nearly so ; bracteoles similar to ordinary underleaves 

 but smaller. 



Stems 3-8 cm. long, 0.25 mm. in diameter; leaves 0.7 x 0.4 

 mm. ; underleaves 0.5 x 0.3 mm. ; leaf-cells at edge of leaf 14 // 

 in diameter, in the middle 18 ft, and at the base 28 x 23 fi ; inner- 



? bracts 1.7 x 1 mm. (on robust specimens with perianths), 

 perianth 4 x 0.85 mm. ; $ bracts 0.45 x 0.25 mm., bracteoles 

 0.35 x 0.15 mm., antheridia 0.15 mm. in diameter. 



Mixed with other hepatics. West Maui (Baldwin, 1875); 



Konahuanui, Oahu (Cooke, 1899). Type specimen in Herb. 



H. Pearson. 



most 



W 



Yale University. 



Explanation of Plate 1 



» 



1. Plant with perianth, natural size. 



2. Part of plant with perianth, X IO - 



i 



3. Part of sterile plant, showing ordinary vegetative branching, antical view, X 3 2 * 



4. Part of sterile stem, showing base of flagellum, postical view, X 3 2 - 



5. Cells from middle of leaf, X 2 55- 



6. Cells from apex of leaf, X 2 55- 



7. Cells from stem in longitudinal section, X 2 55» 



8. Innermost 9 bracts, X 3 2 - 



9. Corresponding bracteole, X 3 2 * 



10. Laciniae from mouth of perianth, X 3 2 - 



11. Transverse section of perianth, X 3 2 - 



12. 13. $ bracts, X 3 2 - 

 14. $ bracteole, X 3 2 - 









