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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 11 



4. Margins of the leaves and underleaves entire. 



5. Segments short, acute from a very broad base; the vitta covering only 

 about one-eighth of the base of the segment; leaf -cells with unevenly 

 thickened walls, the trigones and thin-walled pits not conspicuous. 



9. H. bivittata. 



5. Segments long-acuminate from a broad or narrow base, the vitta covering 

 one-fourth to one-half the base of the segment; leaf -cells with very large 

 knot-like thickenings, triradiate trigones, and thin -walled pits. 10. H. sitbdentata. 

 3. Vitta of the lamina bifurcate only a little below the sinus. 



4. Apex of the segments long-acuminate by three to eight or more cells. 



5. Cells of the tip subquadrate. 5. H. acanthelia. 



5. Cells of the tip long-rectangular. 7. II. limbata. 



4. Apex of the segments acute or acuminate by only two or three cells. 



11. H. runcinata. 



1. Herberta juniperoidea (Swartz) Grolle, Revue Bryol. Lichenol, 30: 80. 

 1961. 



J ungermannia juniperoidea Swartz, Prodr. 144. 1788. 



J ungermannia juniperina Swartz, PI, Ind. Occid. 3: 1835. 1806. 



Schisma juniperina (Swartz) Dumortier, Rec. Obs. Leberm. 23. 1836. 



Mastigophora juniperina (Swartz) C. G. Nees, Hep. Eur. 3: 573. 1838. 



Sendtnera juniperina (Swartz) C. G. Nees in G. L. & N. Syn. Hep. 239. 1844. 



Herbertia juniperina (Swartz) Trevisan, Mem. 1st. Lomb. III. 4: 397. 1877. 



Plants of medium to large size, light greenish-brown to dark brown, in tufts 

 or pendent; leafy stems to 20 cm long, with leaves to 2 mm wide (when dry), 

 sparingly irregularly branched, the branches both lateral, of the Frullania type 

 and leafy, and intercalary, leafy or flagelliform • stem in transverse section or 

 two or three layers of small, thick-walled cells surrounding the larger cells of 

 the medulla. Rhizoids from the scale-leaves of the flagelliform branches. Leaves 

 spreading, the bases imbricate, more or less asymmetric, 3-4 mm long, 1-1.5 mm 

 wide, bifid to one-half of their length ; segments long, lanceolate, curved, taper- 

 ing to the acute apex, the margins entire, the vitta half the width of the base 

 of the segment, ending below the tip ; lamina ovate, with marginal appendages 

 bearing slime papillae near the base, the vitta bifurcate a little below the sinus ; 

 leaf-cells thick-walled from coalesced trigones and intermediate thickenings, the 

 walls uneven, the cuticle verruculose. Underleaves as large as the leaves, similar, 

 symmetric, the segments straight or divergent. Plants dioicous. Male inflores- 

 cence terminal, becoming intercalary on the stem, the bracts and bracteoles like 

 the underleaves, the lamina pouched ; antheridia large, spherical, in pairs in the 

 axils of both bracts and bracteoles. Female inflorescence terminal on the stem, 

 with one subfloral innovation — soon appearing to be on a short branch, the 

 bracts and bracteoles in four to six series, increasing in size and elaboration to 

 the innermost series, the bracts of the innermost series serrate, dentate, and cili- 

 ate on the margins. Perianth 3-parted to the middle, the divisions bilobed, the 

 margins serrate, dentate, and ciliate. Sporophyte not seen. Fig. 1, a-p. 



Fig. 1. Herberta juniperoidea. 1 a. Stem, dorsal view. X 18. lb. Leaf, X 18; the 

 vitta outlined by dots. 1 c. Leaf segment, X 33. 1 <1. Cells of the tip of the leaf segment, 

 X 350. 1 e. Cells from the base of the leaf segment, X 180. 1 f. Leaf bases, X 50. 1 g. 

 Cells of the vitta, X 350. 1 h. Underleaves, X 18. 1 j. Portion of a transverse section of 

 a stem, X 350. 1 k. Male bract, X 18. 1 m. Segments of a female bract of the innermost 

 series, X 18. 1 n. Segment of the perianth mouth, X 33. 1 p. Arehegoninm, X 50. 



